by Kiko Ramos | Jan 3, 2025 | News
Substrate AIa Valencian artificial intelligence company listed on BME Growth, has hired the consulting firm LKS Next to prepare the IPO of its subsidiary 4D Médica.
LKS Next is part of the Mondragon Corporation and has a total of 800 professionals specialized in the industrial, technological and health sectors. Its experience includes mergers, acquisitions and capital markets advisory servicesand, therefore will assist Substrate AI in preparing for the IPO.. From the preparation of the necessary documentation, the choice of the most suitable market for the initial public offering (IPO) and the search for investors, considering the particularities of 4D Médica's business.
Acquisition of 4D Medical by Substrate AI
Substrate AI acquired the 70% from 4D Medical in 2022 for 1.4 million euros. 4D Médica was originally dedicated to the sale of diagnostic imaging hardware for the veterinary sector.under the direction of its founder and CEO, Francesc Ramos, with more than 20 years of experience in the sector.
After the acquisition, the company was transformed into a AI applied to diagnostic imagingwith hardware and software divisions, operating in both veterinary and human medicine.
The purchase of Diagximag is integrated into the subsidiary 4D Médica
In 2023, Substrate AI purchased Diagximaga company focused on hardware for human medicine and main distributor of Samsung in Spain.integrating it with 4D Medical. In addition, we developed a AI-based imaging software to help doctors and veterinarians obtain more accurate diagnoses, which will soon also be available for human medicine.
This software seeks to Improve disease diagnosis and reduce radiation exposure to patients and physicians. by means of collimator self-regulation in ionizing radiation equipment.
4D Médica's sales growth since 2021
Thanks to these initiatives, 4D Médica has tripled its sales in three years1.8 million in 2021 to a figure three times higher in 2024, while maintaining an EBITDA margin of more than 25%.
"We are very satisfied with the road we have traveled in just two years. Together with Substrate AI, and thanks to their technology and support, we have transformed the company and prepared ourselves to become one of the key players in the application of AI to diagnostic imaging, an essential part of current and future medicine," says Francesc Javier Ramos, CEO of 4D Médica.
Therefore, the next step is the joint work of LKS Next, Substrate AI and 4D Médica to ensure that the IPO fits the needs of the company's growth plan.
Kiko Ramos
CEO of 4D Médica. Expert in marketing and distribution of medical equipment.
by Kiko Ramos | Dec 27, 2024 | Equipment analysis
The arc in C is specialized medical equipment used in radiology and interventional procedures to obtain real-time X-ray images of the inside of the human body. It is a mobile device that enables radiological and fluoroscopic imaging. Its name derives from its C-shaped structure"which allows a wide range of movements and the acquisition of images from multiple angles and positions for capture specific anatomical views without moving the patient.
It is used to obtain X-ray and fluoroscopic images without having to move the patient to the radiology department. Therefore, diagnostics and procedures can be performed at the patient's hospital bedside or on the operating table during surgery. Its use is essential in areas such as surgery, orthopedics, traumatology, cardiology, neurology, urology and minimally invasive procedures.
Among the main advantages offered by the arc in Cis that facilitates diagnosisoffers a high precision and safety, y decreases the duration of surgical interventions in which the patient is under general anesthesia. In the following article, we analyze how a C-arm works, its parts, functions and main applications and uses. medical equipment.
How does a C-arc work?
The operation of a surgical C-arm is similar to that of the X-ray machines conventional. Combine two main elements that work in an integrated manner How does this process work?
X-ray generator
The process begins with the X-ray tubelocated at one end of the "C" arm. This component emits a beam of radiation which passes through the patient's body. Collimators, which are adjustable devices on the tube, delimit the radiation field, ensuring that only the area of interest is irradiated. This not only improves image quality, but also minimizes radiation exposure to other areas.
When the X-ray beam passes through the patient's body, interacts with the different tissuesgenerating a phenomenon called differential absorption. The Denser tissues, such as bones, absorb more radiation. and are represented as white areas in the image. On the other hand, the soft tissues and air-filled areas allow the rays to pass through more easily, appearing in gray or black tones. This difference in absorption is what creates the contrast in radiological images.
Image detector or intensifier
At the opposite end of the X-ray tube is the image detector or intensifier. This component receives the rays that have passed through the patient and converts them into electrical signals. Modern detectors, called digital flat panel detectors, process these signals to generate high-resolution images. This advance has largely replaced traditional intensifiers, offering greater sharpness and less radiation exposure.
The signals captured by the detector are sent to a processing system that converts the data into digital images.. This software automatically optimizes parameters such as contrast, brightness and sharpness to ensure that images are clear and easy to interpret. These images are displayed in real time on monitors connected to the system, allowing the medical team to observe the area of interest while the procedure is being performed.
C-arc: Parts and functions
The C-arm in radiology consists of several parts that work together to provide high quality images in real time during medical procedures. Below are its main components and functions:
Part |
Description |
C-shaped arm |
Central structure connecting the X-ray tube to the detector. |
X-ray tube |
Located at one end of the C-arm, it emits the radiation beam. |
Image detector |
At the opposite end of the X-ray tube, it captures the radiation passing through the patient. |
Mobile base |
Wheeled structure that supports the equipment and facilitates its transport. |
Control panel |
Operational console from where the equipment parameters are adjusted. |
Monitors |
Screens connected to the image processing system. |
Collimator system |
Adjustable device located in the X-ray tube. |
Cooling system |
Components that dissipate the heat generated by the X-ray tube. |

Parts of a C-arc
1. "C" shape arm
It is the main structure that connects the essential components of the equipment, such as the X-ray tube and the imaging detector.
Functions:
- The C-shaped arm connects the X-ray tube, which is located at one end, to the image detector or intensifier, which is located at the opposite end, allowing a wide range of movement around the patient.
- Facilitates imaging from multiple angles no need to move the patient.
- Includes rotations in multiple planes: horizontal, orbital and verticalThis makes it possible to adapt to different types of procedures.
X-ray tube
This is the radiation generator located at one end of the C-arm.
Functions:
- Emits X-rays through the patient's body.
- Its intensity and duration are controlled to obtain quality images. while minimizing radiation exposure.
- Security is a key aspect in the use of the C-arm. These devices are designed to minimize radiation exposure for both the patient and the medical staff. They have specific systems that reduce scattered radiation and integrated dosimeters continuously monitor the delivered dose.
3. Image intensifier or digital flat detector
It is located on the opposite side of the X-ray tube, capturing the radiation passing through the patient.
Functions:
- Converts X-rays into visible images in real time.
- The state-of-the-art digital flat panel detectors offer higher resolution images and lower radiation exposure compared to traditional intensifiers.
4. Control Console
This is the external control panel operated by the radiological technician during diagnosis.
Functions:
- Allows adjustment of exposure parametersThe company has a wide range of products, such as time and intensity, among other aspects.
- Controls the movement of the arc and the orientation of the images.
- Saves and transmits the images obtained for further analysis. The data is stored in a PACS system (Picture Archiving and Communication System), allowing quick and easy access for further analysis.
3. Monitor
The C-arm includes one or more high-resolution monitors, usually in Full HD, which allow physicians to view images in real time during procedures. This screen is connected to the system, usually located near the surgical field.
Functions:
- Displays radiological and fluoroscopic images in real time so that physicians can be guided through the procedure.
- Some systems include dual monitors to compare images in real time with previous analyses.
6. Mobility system
It is a rolling base with lockable wheels or fixed support system on larger models.
Functions:
- Facilitates C-arm transport between different areas of the hospital.
- Allows you to position the equipment in a stable and safe manner around the patient.
7. Power generator
It provides the power needed to operate the X-ray tube and other system components.
Functions:
- Regulates the power supply to ensure consistent performance during use.
8. Image processing software
By means of a radiodiagnostic softwareThe computerized system manages the acquisition, processing and storage of medical images.
Functions:
- Improved image quality through techniques such as contrast adjustment and noise reduction.
- Allows measurements and annotations directly on the images.
9. Collimator system
It is the device located in the X-ray tube that is responsible for controlling the irradiated area to be analyzed or treated.
Functions:
- Adjusts the radiation field to focus only on the area of interest.
- Reduces unnecessary radiation exposure for both the patient and the medical staff.
10. Refrigeration system
The cooling system is the mechanism for dissipating the heat generated by the X-ray tube.
Functions:
- Maintains equipment temperature within safe operating limits.
- Prolongs X-ray tube lifetime.
Clinical uses and applications of a C-arm in radiology
The C-arm is a medical device widely used in radiology and interventional medicine due to its ability to generate real-time images with high precision. What are its main uses and clinical applications?
Orthopedic surgery
In the field of orthopedic surgery, the C-arm is essential for the precise placement of screws, intramedullary nails and plates used in orthopedic surgery. fracture treatment. It is also used for guiding fracture reduction or deformity correction procedures. Its ability to provide clear, real-time images allows the surgeon to visualize bone structures and ensure that implants are positioned correctly, reducing the risk of errors during surgery.
Spine surgery
In spinal interventions, the C-arm facilitates the precise placement of the fixation devices such as pedicle screws and spinal fusion brackets. In turn, it is also used in procedures such as the vertebroplasty. The real-time images it generates are crucial to avoid injury to sensitive nerve structures and to ensure a successful outcome.
Interventional radiology
The C-arm is an essential tool in interventional radiology, where it is used for guided procedures such as biopsies, drains and tumor ablations. It is also indispensable in angiographieswhere digital subtraction imaging (DSA) allows high-precision visualization of blood vessels. This equipment facilitates minimally invasive procedures, which require detailed, real-time imaging to ensure accurate results.
Interventional cardiology
In cardiology, the C-arc is used in procedures such as coronary angiographieswhich evaluates the circulation in the arteries of the heart. It is also key to the implantation of pacemakers and other cardiac devices. Thanks to the dynamic images it provides, physicians can perform complex procedures with greater safety and precision.
Vascular surgery
In vascular surgery, the C-arm allows detailed visualization of the vascular system, which facilitates procedures such as the stenting to repair aneurysms or the insertion of filters in the vena cava.
Urology
In urology, this equipment is used to guide procedures such as placement of ureteral catheters or nephrostomies. It is also useful in the percutaneous nephrolithotomywhere kidney stones are removed using minimally invasive techniques. Real-time imaging helps physicians locate specific structures and avoid damage to surrounding tissues.
Gastroenterology
In gastroenterologic procedures, the C-arm is used for inserting feeding tubes or drainsas well as for placing esophageal prostheses. This device is especially useful in delicate procedures where precision is crucial, such as in hard-to-reach areas within the gastrointestinal tract.
Neurosurgery
In neurosurgery, the C-arm is used for procedures such as the electrode placement for deep brain stimulation or minimally invasive spinal surgeries. The ability to generate highly accurate intraoperative images is critical for navigating complex structures of the nervous system and ensuring patient safety.
Oncology
In the treatment of cancer, the C-arm is a valuable tool for radiofrequency or microwave ablationswhere localized tumors are destroyed. It is also used for the placement of markers to guide radiation therapy. Its ability to generate precise images allows for accurate positioning of instruments in malignant tissues, optimizing treatment.
Traumatology
In emergency situations or in traumatology, the C-arc is used for evaluate complex fractures and guide reduction procedures. It allows to verify in real time the correct alignment of the bones, which is crucial to ensure the patient's functional recovery.
Emergency procedures
In emergency environments, this equipment is indispensable for the immediate evaluation of serious injuriesas major trauma, and for guiding critical procedures such as thoracic drainage. Its ability to generate immediate images allows physicians to make quick decisions and save lives in critical situations.
Dentistry and maxillofacial surgery
In dentistry and maxillofacial surgery, the C-arm is used for the dental implant placement and surgical planning in the mandibular region. Provides detailed images of the bony structures of the skull and jaw, ensuring accurate results.
Gynecology and obstetrics
In gynecology, this equipment is used for interventional procedures, such as the placement of intrauterine devices or catheters used in fertility treatments. Its use improves the accuracy of procedures in sensitive areas, increasing safety and effectiveness.
Conclusion
The C-arm stands out for its versatility, as it is used in multiple medical specialties. Its ability to provide real-time imaging facilitates decision-making during complex procedures, reducing errors and improving clinical outcomes. In addition, by enabling minimally invasive interventions, it contributes to faster patient recovery and greater efficiency in medical resources.
If you are a health professional and you are interested in to acquire a C-arc or any other radiodiagnostic equipment, our 4D team will contact you to advise you and find the best solution for your clinic or hospital.
Contact 4D
Kiko Ramos
CEO of 4D Médica. Expert in marketing and distribution of medical equipment.
by Kiko Ramos | Dec 10, 2024 | Projects
In collaboration with the Friends of Monkole Foundation in the Congo, 4D Medical has offered several teams and provided specific training to doctors to improve healthcare at Monkole Hospital, located in the Congo.
Monkole, Congo's hospital offering quality healthcare at no cost
Monkole Hospital is located in Mont-NgafulaThe region is a semi-urban area located south-west of Kinshasa, in the capital of the Democratic Republic of Congo. This region is made up of more than 300,000 low-income inhabitants. The Democratic Republic of Congo, with about 100 million inhabitants, ranks 180 out of 193 in the 2022 Human Development Index.
Its population is characterized by a lack of access to basic resources, such as food, housing and health care.. Thus, in addition to the lack of infrastructure and services, few inhabitants of the region can afford the health care they need. This is because, in the absence of Social Security, Health care and medical treatment are private and paid for.
Discover the history of Monkole: From its beginnings to the present day.
In view of the precarious situation in the Congo region, Monkole was established in 1991 as the first and only hospital in the Congo that began to care for and feed its patients.. It began as a dispensary with only one doctor, one laboratory assistant, three nurses and five other workers. Over the years, it evolved into a prestigious hospitalwhere the patients can access quality health care at no cost.. Therefore, if a person needs medical assistance and has no financial resources, Monkole will be able to provide the treatment he or she needs.
In the early days, there was a clear lack of infrastructure. Therefore, the directors of Monkole Hospital, with the help of the PATS program financed by the European Union, built a well and two electric generators in 1997. to have access to potable water and electricity. In turn, in order to solve the problem of hiring qualified personnel, CECFOR created a Instituto Superior de Enfermería (ISSI).
At 2001health care reform was developed in the country and Monkole was elevated to the rank of General Reference Hospital in the municipality of Mont-Ngafula. This was the beginning of the hospital expansion plans and currently offers a total of 120 beds and different medical specialties.
This is in addition to the help provided by the Friends of Monkole Foundationan entity that collaborates with the Monkole Hospital for to promote the health service. They offer humanitarian aid and cooperation so that the entire population can have access to health care, regardless of their resources and economic situation.
4D Médica's equipment and its partnership with Monkole Hospital
4D Médica has collaborated with the Friends of Monkole Foundation to provide medical equipment to the medical services of Monkole Hospital. Specifically, the following equipment and a complete training to make use of them were provided:
Vieworks digital X-ray acquisition system
The equipment provided is the system for the acquisition of X-rays Vivix 4343 VW from Vieworks. It is an advanced flat panel detector designed for the capture of high quality digital radiographic images. By means of the flat panel technologyThe X-Ray X-Ray Detector uses a thin film transistor (TFT) matrix and photoconductive sensors for direct or indirect detection of X-rays. It has a size of 43 cm x 43 cm, making it ideal for full body X-rays.
Provides images with excellent sharpness that contributes to a accurate assessment and also has a wide dynamic range which has a superior contrast that helps differentiate the various anatomical structures. On the other hand, the model has a wireless connectivity via wifi which facilitates integration into different clinical environments and eliminates the need for cables. At the same time, it ensures PACS system integration and linkage with other medical devices.
Another aspect to be highlighted is that it provides a rapid acquisition of radiological images. Therefore, it uses less time between exposure and image display, which optimizes radiology workflows. Its low power consumption makes it an efficient medical equipment in terms of energy consumption and battery life.
It is an X-ray acquisition system that can be used in the radiology area and allows you to perform all types of studies: thorax, extremities, spine, spine and abdomen. It is compatible with both mobile X-ray systems and fixed configurations in radiology rooms.
Support for 4D Medical telemetries
A telemetry stand manufactured by 4D Médica has also been included. This is a device or structure designed to house, organize and facilitate the handling of medical telemetry equipment in intensive care units (ICU), coronary units or transfer within medical facilities. This equipment is used to real-time monitoring of various physiological parameters such as cardiac activity, respiratory rate, oxygen saturation and other vital data.
As a portable model, they can be conveniently moved between different rooms and areas of the hospital. It is equipped with swivel casters and brakes for greater stability and control during use.
Imaging and telemedicine management software
The medical equipment supplied includes DxWorks image management software. Among its features, it stands out for being a fast and high quality image acquisition software which allows monitor system statusas well as storing and managing images in the database. In addition, it is compatible with the integration of the PACS system Vieworks QXLink 3 and allows for the remote operations planning.
The QXLink 3 image storage and display software is the QXLink 3, the PACS image archiving and communications system. Incorporates the storage of patient images in digital format and its main functions are the transmission, administration and consultation of the various medical files generated.
Siemens Siremóbil Compact L surgical arc
The following equipment is the Siemens Siremobil Compact L mobile fluoroscopy system. It is also known as a surgical arch and is designed to provide high quality images in real time during surgical and diagnostic procedures. It is used in specialties of traumatology, general surgery, urology, gynecology, cardiology and interventional medicine.
It is an equipment that has a integrated X-ray generator which allows precise images to be obtained with a controlled radiation dose. Its advanced technology provides a high resolution and good contrast to visualize the various anatomical details.
Another component of medical equipment is its intuitive control system and the dual monitor that provide access to a real-time display and the possibility of review previously captured images without interrupting the procedure. In addition, it includes an integrated memory for storing and retrieving images without the need for additional systems.
Orthopantomograph SATELEC Xmind
The Satelec X-Mind orthopantomograph is a dental X-ray equipment designed to capture high-quality panoramic imagesused in diagnostics and treatment planning in dentistry. The equipment has a high technology that helps to visualize the complete dentition in a single exposure, both the dentition and the maxillary bones and surrounding structures.
This medical equipment is used for general diagnosticsThe use of the instrument is also used for caries, infections and evaluation of bone structures. At the same time, it is also used for orthodontic, implantology and maxillofacial surgery treatment planning.
Specific training of the teams
From 4D Médica, a report was provided by a specific and comprehensive training on the use of the equipment to the different medical teams that collaborate with the Friends of Monkole Foundation. Specifically, it was explained the operation of the installed software in the equipment to be able to plan operations remotely from Spain.
In this project, 4D Médica has sent its medical teams to the Congo region to make health care more accessible to its inhabitants. As specialists in the production and commercialization of medical solutions in the field of Diagnostic Imaging, 4D Médica has provided medical equipment with a high technology and high image resolution. In this way, the population with scarce resources will also be able to access quality medical diagnosis in different medical specialties and have access to the treatments and health care they need.
Kiko Ramos
CEO of 4D Médica. Expert in marketing and distribution of medical equipment.
by Kiko Ramos | Oct 31, 2024 | Equipment analysis
The magnetic resonance imagingMRI, also known by its acronym MRI, is a technique of image diagnosis noninvasive MRI that produces three-dimensional anatomical images. MRI uses powerful magnets and radiofrequency waves which allow the creation of detailed images of the organs, tissues and internal structures of the body. Unlike other methods such as radiography or computed axial tomography (CT), magnetic resonance imaging (MRI) can be used to create detailed images of organs, tissues and structures inside the body. does not use ionizing radiation or X-raysIt is a safe, painless medical test that does not cause any harm to the patient.
This is one of the most widely used techniques for the production of medical diagnostics, analyze the different tissues and check for any disease, injury or abnormality.. MRI is used by health professionals to examine certain parts of the body and to study the differences existing between healthy and unhealthy tissuesas well as tissues that present abnormal conditions. MRI allows the creation of detailed three-dimensional images to examine organs such as the brain, spine, joints such as the knee, shoulder, hip, wrist and ankle; the abdomen, pelvic region, breasts, blood vessels and heart, among other regions.
To perform a MRI examinationis used, a magnetic resonance medical equipment. In this procedure, the patient is placed inside an MRI scanner. We can define it as a large circular apparatus which is open at both ends. Once the patient is inside the MRI equipment, a series of signals and radio waves are produced and detected by a receiver inside the device. Subsequently, the cross-sectional images of tissues that are visualized through a computer.
What is this process like and what does MRI detect? In the following article, we explain the origin of this medical technique and how it works, as well as its advantages and limitations.
Origin of magnetic resonance imaging
In 1946, Felix Bloch and Edward Purcell independently discovered the magnetic resonance phenomenonfor which they were awarded the Nobel Prize in Physics in 1952. But, actually, its development as a chemical and physical molecular analysis procedure took place in the period between 1950 and 1970. Beginning in 1971, Raymond Damadian demonstrated that MRI relaxation times differed between healthy and tumor tissues, which led scientists to begin to study this technique for the diagnosis of diseases.
At the same time, in 1973 Hounsfield introduced another of today's most widely used medical techniques: computed tomography (CT), which uses X-rays. The success of TAC The results showed that hospitals were willing to invest in the development of new diagnostic imaging equipment, which also drove the development of MRI. In the same year, Paul Lauterbur obtained the first magnetic resonance image, using a back projection technique similar to that of computed axial tomography.
As of 1980sthe gradual implementation of MRI in clinical practiceto the current situation. Today, magnetic resonance imaging is one of the most widely used diagnostic imaging techniques.
How does MRI work?
The human body is composed mainly of water and fat, so that hydrogen atoms account for 63% of the total number of atoms in the body. The hydrogen nucleuswhich consists of a proton, is used in magnetic resonance imaging because it acts like a powerful magnet that generates a magnetic field around the patient's body. MRI is a diagnostic imaging method based on the absorption and emission of energy in the form of a set of radiofrequency signals within the electromagnetic radiation spectrum. The radiofrequency used in MRI produces frequencies of between 15 and 80 megahertz, making it a non-ionizing radiation that is harmless to the body.
In an MRI exam, the patient is placed inside an MRI scanner. magnetic resonance scanner which produces radio waves that interact with the protons, generating a series of radio frequency signals that are detected by a receiver inside the device. All these signals emitted and detected by the scanner's antenna are processed in a computer, where they are detailed images of the fabrics and inside the organism that allow the medical diagnosis to be made.
Specifically, a MRI equipment consists of the following elements:
- External magnet
- Magnetic field gradients
- Radio frequency transmitter
- Radio frequency receiving antennas
- Computer
How is an MRI exam performed?
To perform an MRI exam, a medical MRI machine is used, where the patient is introduced into a large device that has a circular shape and is open at the ends. This procedure is performed in a special room housing the MRI system or scanner. A member of the MRI staff accompanies the patient into the room, where he/she will be asked to lie down on a padded table and then be introduced into the machine to begin the MRI diagnosis.
Before the test
The majority of diagnoses have a duration between 15 and 45 minutesdepending on the part of the body to be tested and the number of images needed. Before the test, the person must partially or completely undress and is provided with a gown that has no buttons or metal fasteners. It is important to leave all metal objects and other items that could be affected by the magnetic field outside the MRI room. For example, keys, jewelry, cell phones, credit cards or watches.
During the test
It is important that the patient remains still and relaxed.. In some examinations, an intravenous injection of a contrast material called gadolinium to obtain a clearer image of the area to be examined. To do this, at the beginning of the medical test, a nurse will place an intravenous line into a vein in the patient's arm or hand using a small needle.
On the other hand, it should be noted that the magnetic resonance system can produce certain loud noises during the procedure. To prevent any problems associated with noise, earplugs are provided. For the duration of the diagnosis, the patient will be monitored at all times and will be able to communicate with a medical professional via an intercom.
After the test
Once you have completed the exam, images will be reviewed by a radiologistwho will subsequently inform the physician of the results of the MRI examination.
MRI in medical practice
Magnetic resonance imaging is a procedure used to study the differences that exist between healthy and unhealthy tissues, as well as other regions of the human body that present abnormal conditions. Nowadays, it is one of the most widely used diagnostic imaging techniques and it allows for detect a large number of diseases and abnormalities in virtually all regions of the body:
- HeadCentral nervous system, orbit, face and skull.
- Neck.
- SpineSpinal cord, meninges, bone spine and intervertebral discs.
- Chestespecially at the cardiovascular level.
- Abdomenliver, biliary tract, spleen, pancreas, urinary tract, genital tract and pelvis.
- Large joints and extremities.
What does MRI detect?
MRI is often prioritized over CT scanning when the physician needs to have more detail about the soft tissues. For example, it helps to obtain images of abnormalities in the brain, spinal cord, muscles and liver. It is also very useful in identifying tumors in these tissues. MRI has the following clinical applications:
- Morphological applicationsDefinition of congenital anomalies, traumatic pathology, detection and extension of tumors,
degenerative diseases, vascular pathology, inflammatory processes and infectious pathology.
- Functional applicationsThese are functional brain MRI studies and functional cardiac studies.
- Tissue analysis applicationsMRI spectroscopy, chemical shift studies, perfusion studies and diffusion studies.
This diagnostic technique is also used to analyze other types of conditions and as an alternative to other procedures that present greater risks:
- Measuring the presence of certain molecules in the brain that distinguish a tumor from an abscess.
- Identify alterations in the female genitalia and fractures in the hip and pelvis.
- Perform the valuation of certain common joint anomaliessuch as torn knee ligaments or cartilage and sprains.
- Study and evaluate bleeding and other infections.
- MRI is applied when the The risks of performing a CT scan are high.. Especially, it can be used in people who have had a reaction to iodinated contrast media in a CT scan and for pregnant women, because radiation can cause problems in the fetus.
Types of magnetic resonance imaging
We can distinguish between different types of MRI:
Functional Magnetic Resonance Imaging or fMRI
fMRI is used for observe the structures and functioning of the brain. It measures the small changes in blood flow that occur in brain activity. This type of test helps detect abnormalities within the brain that cannot be found with other imaging techniques.
Perfusion magnetic resonance imaging
Professionals can use this type of magnetic resonance imaging for to estimate the blood flow in a particular area. It is useful in determining whether the blood supply to the brain has been reduced when a stroke. It also serves to identify areas where blood flow is increased, such as in the case of the tumors.
Diffusion-weighted magnetic resonance imaging
It is used to detect changes in the water movements of cells that are not functioning normally. It helps to identifying early stages of strokes, detect brain disordersanalyze whether a tumor has spread o differentiate a brain abscess from a tumor.
Magnetic resonance spectroscopy
This type of test is used for detect brain disordersThe method can distinguish between dead tissue within an abscess and the presence of multiplying cells within a tumor. Specifically, this method can distinguish between dead tissue within an abscess and the presence of multiplying cells within a tumor. In turn, it is used to to assess metabolic disorders of the muscles and nervous system.
Magnetic resonance angiography
Provides detailed images of blood vesselsIt is used to assess the blood vessels of the brain, heart, abdominal organs, arms and legs. In particular, this technique is used to analyze aortic aneurysms, aortic dissection, narrowing of the arteries of the extremities, thrombi in the veins of the extremities, blood flow to tumors and tumors affecting the blood vessels.
Magnetic resonance venography
This is a magnetic resonance imaging of veins. Detects the cerebral venous thrombosisThe presence of thrombi in a vein that carries blood from the brain.
Advantages of magnetic resonance imaging
MRI has established itself as a safe, accurate and effective diagnostic imaging method. At present, MRI stands out for offering many advantages, which has led to prioritizing this technique over other procedures, especially computed axial tomography or TACradiological tests, radiological tests and ultrasoundsWhat are the advantages?
- It is a non-invasive, safe and painless scanning technique. It does not use ionizing radiation or nephrotoxic contrast media and does not produce adverse effects in patients.
- MRI is a test that helps to assess both the structure of an organ and its functioning.
- Provides a high spatial, temporal and tissue resolution for tissue differentiationTherefore, MRI has an important role in the early diagnosis of soft tissue diseases.
- It has three-dimensional capabilityThe system provides detailed, cross-sectional images of the tissues and organs to be examined. In this way, it makes it possible to detect anomalies that could be hidden by the bones when other diagnostic methods are used.
- Allows you to to perform functional studies. Functional Magnetic Resonance Imaging or fMRI is a medical test used to examine the parts of the brain that are handling critical functions, evaluate the effects of stroke or other diseases, as well as guide brain treatment.
Limitations and risks of magnetic resonance imaging
However, it also presents some risks and disadvantages that are important to analyze:
Increased diagnostic time and cost
The time required to perform an MRI scan is high. For this reason, CT is often used in emergency situations, such as severe injuries and strokes. In turn, the economic cost is higher and there is a limitation in availability compared to other imaging techniques.
Anxiety and claustrophobia problems
The magnetic resonance equipment is a small, enclosed spaceThe patient may feel a feeling of claustrophobia or anxiety. For this purpose, the patient may be given an anxiolytic, such as alprazolam or lorazepam, prior to the start of the examination.
Currently, there are also open magnetic resonance scannerswhich offer an open side and a wider interior. This makes people can reduce claustrophobia and obese people can access more easily. However, the images produced may be of lower quality. But despite this, such open devices can be used for diagnostics.
Magnetic field effects
The presence of implanted metallic devices or materials in the patient's body can produce certain adverse effects. The magnetic field used in this medical technique is very powerful and always active, which can cause the devices to shift, overheat or malfunction. In addition, they can also distort the images generated.
Among these devices are the cardiac pacemakers, defibrillators, cochlear implants and metallic magnetic clicks used in the treatment of aneurysms. However, other devices such as dental implants, hip replacements or spinal straightening rods have none of these effects. Therefore, it is important that people who have any implanted devices inform the physician before making an IMR diagnosis.
Reactions to contrast agent
The gadolinium contrast media can lead to a number of reactionsThe most common symptoms are headache, nausea, pain and cold sensation in the area where the injection is made, distortion of taste and dizziness. However, it should be pointed out that these contrast agents present lesser reactions than iodinated contrast media used in CT scans and CT angiography.
In conclusion, magnetic resonance imaging is a diagnostic imaging technique that provides detailed, cross-sectional imaging examinations that are essential in the detection of disease and for studying virtually all regions of the human body.
Kiko Ramos
CEO of 4D Médica. Expert in marketing and distribution of medical equipment.
by Kiko Ramos | Oct 23, 2024 | Equipment analysis
An ultrasound, also called a sonogram or ultrasound, is an ultrasound scan. diagnostic imaging test that uses the sound waves to create images of organs, tissues and internal structures of the organism. It is a simple, safe and non-invasive technique which allows health professionals to analyze and observe the inside of the body without surgery. In other words, it is a diagnostic technique that no need to make any incisions or use ionizing radiationas in the case of the X-rays.
It stands out for being a comfortable, economical and painless test. It is mainly used for diagnose various medical conditionshealth monitoring and development of the baby during pregnancy and guide certain medical proceduressuch as biopsies, tissue extraction, and other techniques that require the use of image diagnosis.
How does an ultrasound scan work?
An ultrasound is a technique that emits a series of mechanical waves that have a frequency above the hearing ability of the human ear and allow create two-dimensional and three-dimensional images. These images are called sonograms and are performed with specific equipment. The medical devices that allow these diagnoses to be performed are ultrasound scanners. They have a tool rod-shaped which is known as transducer and is responsible for detecting the waves produced in the different tissues, organs and fluids of the body. These are then picked up again by the transducer and converted into electrical signals.
In order to analyze the waves, a special gel on the skin in the area to be examined. Through the use of a computer, these signals are processed to create a real-time image of internal structures of the organism. The images produced are visualized on the screen and provide information on movements that are occurring, the distance at which a fabric is locatedas well as its size, shape and composition.
Types of ultrasound scans: Uses and main differences
We can find different types of ultrasound: ultrasound in pregnancy, diagnostic medical ultrasound, guided ultrasound, as well as 3D and 4D ultrasound. Let's see their main differences:
Ultrasound in pregnancy
Ultrasound in pregnancy, also known as obstetrical ultrasound, is a diagnostic imaging test that provides the visualization of the fetus inside the mother's uterus. As it is an ultrasound technique that does not involve radiation, it is a safe technique for mother and baby.
What is fetal ultrasound used for?
It allows analysis of the baby's growth, health and general development. In particular, it provides the following information:
- Confirmation of pregnancy.
- Verification of multiple pregnancy (twins and triplets).
- Knowledge of the gestational age. That is, how far along the pregnancy is.
- Analysis of the sizethe position of the fetus, the growth and the sex of the baby.
- Diagnosis of congenital defects in the various parts of the baby's body, such as the brain, heart or spinal cord.
- Study of the existing amount of amniotic fluid. It is essential for the development of the baby's lungs and bones, as well as to protect the baby from injury.
- Identify problems in the placenta, uterus, cervix and ovaries of the mother.
- Information on possible signs that could indicate an increase in the number of risk of Down syndrome.
Diagnostic medical ultrasound
Diagnostic medical ultrasound is essential for the diagnosis and treatment of study of diseases or possible health problems in the patient. This type of test is used when a person detects certain symptoms that are important to analyze. Using this type of ultrasound, medical professionals can study various medical conditions involving different parts of the body. Depending on the area to be analyzedwe can distinguish different modalities of diagnostic medical ultrasound scans:
- Abdominal ultrasoundIt focuses on the observation of the internal structure of the abdomen. It allows to analyze organs such as the pancreas, kidneys, liver, gallbladder and spleen.
- Vaginal ultrasoundVaginal ultrasound: This test is used to analyze the uterus, ovaries, endometrium, cervix, fallopian tubes and pelvic area of the woman. Vaginal or tansvaginal ultrasound is used to detect possible gynecological conditions, such as the presence of ovarian cysts, fibroids and uterine fibroids, abnormalities in the menstrual cycle, certain types of infertility and pelvic pain.
- Rectal ultrasoundRectal examination: Consists in the evaluation of the rectum to study the prostate and bladder function.
- Renal ultrasoundKidney ultrasound: Evaluates the condition of the kidneys, both the size, location and shape, as well as their adjacent structures. This type of ultrasound helps detect the presence of tumors, cysts and renal obstructions.
- Breast ultrasoundIt is used to detect abnormalities in the breast tissue, such as the presence of cysts. It is often used as a backup technique after mammography.
- Cervical and thyroid ultrasoundAnalyzes the functioning of the thyroid gland, which is located in the neck. It is essential to study possible health problems that may arise, such as the appearance of nodules, cysts and structural alterations. It is also used to analyze the salivary glands.
- Doppler or vascular ultrasoundThe speed and direction of blood flow in the heart and blood vessels can be analyzed with this ultrasound. It allows to measure the blood circulation in the different organs of the body, as well as the neck, arms and legs. It is an essential test to diagnose possible blockages, narrowing and problems in the circulatory system.
- Muscle ultrasoundMusculoskeletal ultrasound: This ultrasound is also called musculoskeletal ultrasound. It explores the different muscles, tendons, ligaments, bursae, cartilage, joints and bone surfaces, making it possible to detect the presence of injuries, tendinitis, degenerative problems and other conditions of the muscular tissues.
Guided ultrasound
Guided ultrasound is a technique used for the diagnosis and treatment of development of ultrasound-guided procedures. It is used to guide health care professionals in the Performing tissue biopsies, tissue aspiration and removal, catheter placement, abscess drainage and percutaneous injections.. This technique consists of the introduction of a needle or catheter into the area of the body to be tested. Transducer advancement is controlled in real time, allowing the needle to be steered for more accurate medical diagnosis.
This type of ultrasound can be performed in two ways: through devices adapted to the probes or through the hands-free techniquewhere the professional holds the needle with one hand and the probe with the other hand.
3D and 4D ultrasound
The technological advances in the field of medicine allow the images generated in an ultrasound scan to be displayed in 3D and 4D. The 3D ultrasound scans emerged at the end of the 1990s and offer a wide range of high-resolution static images with a three-dimensional perspective. Currently, the systems used are based on mechanical transducerswhich make it possible to obtain images in the three perpendicular planes. Thus, in the image, the following can be seen transverse, longitudinal and coronal sections. As for the 4D ultrasound scansincorporate a technology that captures motion in real timeThis provides a closer and more realistic reproduction of what is happening inside the organism.
In which cases are 3D and 4D ultrasound scans used?
The 3D ultrasound scans are used in pregnancy and in various specialties. such as gastroenterology, gynecology and obstetrics, breast and uterine pathology and cardiology. It also plays an essential role in vascular surgery, urology, rheumatology and traumatology.
For their part, the 4D ultrasound scans are used during pregnancy to analyze the baby's development. By providing real-time motion, shows the gestures and movements made by the baby inside the uterus and also serves to detect possible problems and anomalies. It is recommended to be performed around the 28th week of gestation.This is the moment when the fetus is more developed and its features are more similar to those of a newborn. At the same time, in 4D ultrasounds, it is essential that there is a sufficient amount of amniotic fluid. This is a fundamental aspect for the ultrasound waves to be transmitted properly. Otherwise, the image will be displayed with lower quality, so it would not be advisable to use this technique.
However, it should be noted that 3D and 4D ultrasound scans are not a substitute for follow-up ultrasound scans. which must be performed at 12, 20 and 32 weeks of gestation. Therefore, it is a complementary test for more information on fetal growth.
Innovations in the field of ultrasound
In the field of diagnostic imaging, the ultrasound scanners are the devices used to perform ultrasound scans. In recent years, numerous advances have led to the development of a new type of ultrasound system. medical equipment adapted to new needs of medical centers, hospitals and health professionals.
In addition to the traditional ultrasound scanners that allow a simple and safe test to be performed, the following have emerged new generation ultrasound scanners that use the latest technology and are equipped with artificial intelligence. This type of ultrasound scanners are portable and are characterized by the fact that they can be used completely remotely. In this way, professionals do not have to be present in medical centers and can reach many more regions and patients. Undoubtedly, a a key aspect to boost telemedicine and create fast, complete and accurate diagnostics.
In conclusion, ultrasound scans are one of the most important The most widely used medical diagnostic imaging techniques in use today. This is because it is an easy, safe and non-invasive test that is very useful for diagnosing certain medical conditions, for analyzing the development of the baby during pregnancy and also as a support technique for other procedures. In most cases, ultrasound is part of the first diagnosis to then evaluate how to proceed and what other tests should be performed when treating an ailment or disease.
Kiko Ramos
CEO of 4D Médica. Expert in marketing and distribution of medical equipment.