Definitions for "magnetic resonance imaging"
Related Terms:
Mri, Mri scan, Mri scanner, Functional magnetic resonance imaging, Fmri, Imaging tests, Gadolinium, Modality, Brain imaging, Functional mri, Magnetic resonance spectroscopy, Mra, Imaging, Mrs, Computed tomography scan, Cat or ct scan, Computer tomography, Computed tomography, Neuroimaging, Magnetic resonance angiography, Ct scan, Diagnostic radiology, Contrast agent, Nmr, Cat scan, Computerized axial tomography, Scan, Computerized tomography, Radiographs, Magnetic resonance, Tomography, Fluoroscopy, Computerized tomography scan, Cat scanner, Ct scanner, Positron emission tomography, Radiology, Brain scan, Fluoroscope, Degauss, Pet scan, Ct or cat scan, X-ray, Positron emission tomography scan, X-ray, Pet , Computed axial tomography, Computerised tomography, Sonogram, Ct scanner
a medical diagnostic procedure utilizing the phenomenon of nuclear magnetic resonance to generate images of internal parts of the body. It depends on the differential absorption of electromagnetic radiation by different types of living tissue in a magnetic field. It is complementary to X-ray imaging in that the softer tissue show more prominently in magnetic resonance images, rather than bone, as with X-rays. It is a non-invasive procedure, allowing such images to be obtained without penetration of the tissue by objects. It is abbreviated MRI. As with computerized tomography, the results are usually presented as images of sequential planar sections of that part of the body of concern to the physician.
an imaging technique that uses radiowaves, magnetic fields, and computer analysis to create a picture of body tissues and structures.
A diagnostic scanning technique during which radio waves and an electromagnetic field are used to help create detailed, cross-sectional images of specific organs and tissues. MRI is often considered a particularly valuable imaging technique for studies of the brain and spinal cord because of the MRI’s ability to scan images from various angles and provide strong contrast between healthy and abnormal tissues.
Diagnostic test that produces three-dimensional images of body structures using powerful magnets and computer technology rather than x-rays.
A radiological procedure that takes pictures of the internal organ's size, shape and blood flow. This procedure is painless, and is more detailed than an ultrasound. Some children need to be sedated.
Imaging technique that uses powerful magnets and computers to produce a detailed picture of tissue.
(MRI). A powerful diagnostic imaging method that uses radiowaves in the presence of a magnetic field to extract information from certain atomic nuclei (most commonly, hydrogen). It is mainly used for producing anatomical images, but also gives information on the physico-chemical state of tissues, flow, diffusion, motion and, more recently, molecular targets.
A diagnostic imaging technique that uses a magnetic field and radio waves to produce highly detailed images of the body. Both MRI and CT scans may be used in planning radiation therapy.
Like the CT SCAN (qv) the MRI (or MR) scan produces, in effect, 3-D images of the brain. Unlike CT, it is not the 'workhorse' of radiology departments but is used for more specialised investigations.
a technology which uses magnetic fields rather than x-rays to produce images of the body structure.
Use of electromagnetic energy to produce an image of the heart, blood vessels, brain, and soft tissues. Does not involve the use of radiation or an invasive procedure.
(MRI): a computer imaging process in which pictures of the body are taken. It is a useful tool that helps the physician to actually see brain lesions in people with MS.
A diagnostic procedure that uses radio waves and a strong magnetic field to form serial images of the soft tissues of the body.
a procedure that uses a magnetic field and radio waves to create a three-dimensional representation of body structures
( MRI) – a procedure that allows a computer to draw very detailed images of the inside of the human body; it involves the interaction of radio waves and a strong magnetic field
This is like a CT scan but it uses a magnet and radio waves, not x-rays, to take the pictures. You lie on a couch inside a long chamber while the pictures are taken. See MRI section.
a procedure which is used to show and examine tissues in the body. Tissues are placed in a strong magnetic field. Images are then made as radio waves are absorbed and transmitted.
MRI gives physiological information by showing images of regions with contrasting water content, such as different areas of the brain. MRI is a form of Nuclear Magnetic Resonance spectroscopy and uses the same basic principles.
A diagnostic procedure which uses magnetic fields instead of radiation to produce images of the body.
Advanced diagnostic technique employing an electromagnetic field and computer analysis that permits examination of soft body tissues including prostate cancers.
A noninvasive diagnostic technique that produces computerised images of internal body tissues
A medical diagnostic tool used to scan various parts of the body without the use of X-rays. Requires the use of an intense magnetic field and is prone to interfere with and receive interference from other magnetic material within the range of the scan. This interference may cause harm to the recipient.
A technique for measuring the structure (or, in the case of functional magnetic resonance imaging, the activity) of the living brain. The person is placed inside a large circular magnet that causes hydrogen atoms to move; the return of the atoms to their original positions when the current to the magnet is turned off is translated by a computer into pictures of brain tissue.
In this procedure, large magnets are spun to create magnetic fields that the machine uses to create images of internal organs. For more detailed information, click here. See also Functional MRI.
an imaging technique that uses radio waves, magnetic fields, and computer analysis to provide a picture of body tissues and structures.
This imaging technique uses a strong magnet, which sends radio waves through the body, to produce a picture of the inside of the body on a computer screen and/or on film.
A medical test used to produce images of the interior of the body. MRI uses strong magnetic fields and low-energy radio waves to create the resulting images.
Technology to detect breast cancers or other abnormalities in the breast including breast implant rupture and leakage. The technique involves the use of radio waves to take pictures of sections of body tissue.
A brain imaging tool used to study the activity of brains.
Provides highly detailed pictures of the body's interior, using magnetic fields. It is especially useful in athletic injuries to visualize soft tissues such as ligaments and tendons.
a diagnostic-imaging technique used to make a diagnosis.
A preferred form of radiographic imaging for the examination soft tissue. The University of Wisconsin has a MRI gopher site.
This is a non-invasive radiology procedure that provides fine detailed pictures of the brain anatomy from multiple planes. It can distinguish tumors and other lesions from normal tissue.
An imaging technique, which uses magnetic fields to obtain pictures of both soft tissue and bony anatomy. MRI can be very effective in diagnosing HNP, tumors, vascular abnormalities, and lately, a host of diagnoses caused by bony encroachment. It can be enhanced by the use of Gadolinium, which helps visualize vascularized scar tissue more clearly. Most lumbar MRIs include T1 weighted sagittal cuts (fat is bright), T2 weighted sagittal cuts (water is bright), and proton density weighted sagittal cuts (better for anatomy). Axial images are often included.
A sensitive, noninvasive method for viewing soft tissues of the body using a strong magnetic field.
(MRI): the use of magnetic resonance with atoms in body tissues to produce distinct cross-sectional, and even three-dimensional images of internal organs; MRI is primarily of use in staging biopsy-proven prostate cancer
This technique is used to visualize the inside of the body, providing information that other techniques cannot. Many atoms of the body act as tiny magnets. A magnetic field is applied to your body, causing these magnets to align. A specific kind of radio wave is then applied to your body which you your body then retransmits. A scanner then picks up these waves, producing a three dimensional image. No radiation is involved in this test and there are no side effects. Sedation may be required for younger patients in order to help them remain still during the procdure.
Involves using powerful magnetic fields and pulses of radio waves to produce images of body tissues.
This technique provides detailed images of body structures. It differs from a CT scan in that the patient is not exposed to X-rays. The signals generated in the tissues in response to a magnetic field produced by the instrument are converted by computer into images of body structures. Thus, the size and a change in size of organs or tumor masses, such as the lymph nodes, liver and spleen can be measured.
a method of visualizing soft tissues of the body by applying an external magnetic field.
a non-nuclear imaging procedure much like an x-ray.
an imaging modality that utilizes magnetic fields instead of radiation to take highly detailed pictures of the body. The images are obtained by surrounding the area of study with a magnet, which causes the water molecules inside the body to move. A computer picks up the movements and converts them into pictures. The images can be displayed on a computer screen, stored within the computer, or transferred to film.
A painless technique that uses magnetic fields and radio waves (without radiation) to create clear cross-sectional pictures of the body.
Powerful magnets and computers are used to produce a three dimensional image of internal tissues. This is a noninvasive technique.
MRI uses radio frequency waves to provide direct visualization and quantification of fat. The sharp image contrast of MRI allows clear separation of adipose tissue from surrounding, non lipid structures.
A patient is placed within a scanner which uses magnetic fields to generate cross-sectional images of the head or body. No X-rays are used.
Imaging technique that uses magnetic energy to provide detailed images of bone and soft tissue.
A type of test used to visualize body tissue that uses a magnetic field.
An imaging technique that uses powerful magnets to create very clear images of the inside of the body.
An imaging technique that uses a large circular magnet and radio waves to generate signals from atoms in the body. These signals are used to construct images of internal structures.
A technique used to display tissues that cannot be seen in x-rays or with other techniques.
An important tool to diagnose medical disorders that uses radio waves and magnetic fields to probe the chemical makeup of tissue inside the body.
a test that uses a magnetic field sensor and computers to create 3-dimensional images of the body. It is similar to computerized tomography (CT scan) but uses magnets instead of x-rays.
type of diagnostic imaging that uses electromagnetic imaging and allows evaluation of tissues and fluid in addition to bone. This imaging providing two dimensional cuts through the body part being study which allows a physician to develop a three dimensional sense of the anatomy of that part. Often used to study the brain and spine as well as joints.
A diagnostic and research tool that uses magnetic fields to help form images of the brain. close window
a diagnostic imaging technique that uses magnetic fields and radio waves to produce detailed images of body structures.
A noninvasive diagnostic imaging study that provides computerized images of the inside of the body.
A non-invasive neuroradio imaging system in which a person's body is placed in a strong magnetic field; radio frequency signals given off by hydrogen ions as they move through changes in the magnetic field are computer analyzed to produce detailed images of organs and tissues.
A method of producing accurate multidimensional images of the inside of the body for diagnostic purposes, using the force of a magnet, radio waves and a computer.
Use of magnetic resonance with atoms in body tissues to produce distinct cross-sectional or three-dimensional images of internal organs. An MRI is primarily used in staging biopsy-proven prostate cancer. See magnetic resonance.
Imaging procedure in which a radio frequency pulse causes certain electrical elements of the injured tissue to react to this pulse and through this process a computer display and permanent film establish a visual image. No radiation is required. Greatest application if diagnosing soft tissues problems of the soft tissue, discs, and meniscus that are not revealed through X-ray.
An imaging technique which relies on the way some atoms have a nucleus that spins.
a noninvasive diagnostic scanning technique where the client is placed in a magnetic field
a diagnostic test that uses a strong magnet to view tissues in your body and displays them in a series of "slices."
A body imaging system employing a magnet which surrounds the patient – A magnetic field causes small harmless movement of the atoms in the area of the body being studied. A low energy radio wave is then passed through the same area and the minute change this imparts to the atoms in the magnetic field causes signals to be emitted which are picked up and analyzed by modern computer technology. An image of the tissue is produced in clear detail.
A diagnostic technique that provides high-quality cross-sectional images of a structure of the body without X rays or other radiation.
A scan that uses magnetic fields, radio waves, and a computer to create images of selected areas of the body.
A diagnostic technique that uses a magnetic field to produce on a computer the image of an internal organ.
A technique that uses magnetic fields and radio waves to create images. Like CT scans, MRI creates cross-sectional pictures of the body.
A technique used to make internal images of the body, especially the soft tissues. For more information, see "A Lifesaving Window on the Mind and Body: The Development of Magnetic Resonance Imaging.".
A technique using magnetic fields to produce images of the body; useful in disease diagnosis, including cancer
Special imaging technique which uses powerful magnets to scan the body.
a medical test that uses magnets to study images of the body — As in a CT, a computer constructs an image of the body from the magnetic information. This test is particularly useful to study soft tissues (such as organs in the body).
An imaging technique that allows the soft tissues of the body to be seen
A diagnostic study, similar to a CT or CAT scan, that creates an image using electromagnetic waves instead of X-ray.
A noninvasive diagnostic technique that produces computerized images of internal body tissue and is based on nuclear magnetic resonance of atoms within the body induced by the application of radio waves.
A diagnostic procedure that uses magnetic fields to create pictures of specific areas of anatomy. MRI can provide a more detailed picture than the CT scan in some situations.
A non-invasive technique that does not involve any ionizing radiation.
A procedure that produces images of different body parts using high-frequency radio waves inside a strong magnetic field.
Also called an MRI. An imaging procedure that takes pictures of inside the body using a powerful magnet linked to a computer. Magnetic resonance imaging is usually able to produce better images than CT scans or x-rays. It is particularly good at imaging the spine.
A diagnostic technique that uses magnetism. It produces images of the body's internal structures.
Like a CT scan, an MRI displays a cross-sectional picture of the body. The MRI uses radio waves and strong magnetic fields instead of x-rays and take longer -- often up to an hour.
a machine that produces images of the body using magnetic fields.
A technological tool that detects energy released from hydrogen atoms to create anatomical images. MR images of soft tissues of the body including the brain and spinal cord clearly show MS lesions and may be used to track disease progress.
Magnetic resonance imaging uses radio frequency waves to provide direct visualization and quantification of fat. The sharp image contrast of MRI allows clear separation of adipose tissue from surrounding nonlipid structures. Essentially the same information provided by CT is available from MRI, including total body and regional adipose tissue, subcutaneous adipose, and estimates of various visceral adipose tissue components. The advantage of MRI is its lack of ionizing radiation and hence its presumed safety in children, younger adults, and pregnant women. The minimal present use of MRI can be attributed to the expense, limited access to instrumentation, and long scanning time.
a diagnostic and research technique that uses magnetic fields to generate a computer image of internal structures in the body; MRIs are very clear and are particularly good for imaging the brain and soft tissues.
type of imaging of the brain or other parts of the body using strong magnetic fields; the imaging machine is able to detect the response of tissues to the magnetic fields and a very detailed image is generated. This is the highest resolution type of imaging of the brain and cranial nerves within the skull, and x-rays are not used.
Diagnostic technique using an electromagnetic field and computer analysis, which effectively evaluates soft body tissue, such as the prostate and bladder .
A type of brain scan that creates a picture of the brain using a computer and radio signals. The signals are produced by the body in response to the effects of a very strong magnet contained within the scanner.
A technique of mapping where magnetic fields and radio waves are used to create computerized images (for instance, of brain structure).
a diagnostic technique which uses magnetic fields and radio waves to produce cross-sectional images of soft tissue without X-rays or other radiation.
An MRI scan uses magnets and radio frequency waves to produce images of the inside of the body. An MRI scan can provide important information about tissues and organs that is not available from other imaging techniques.
An imaging procedure that produces a clear three-dimensional picture.
A device that creates computerized images of the body's interior. Instead of using radiation as in an X-ray, MRIs involves a rapid series of pictures taken while the subject is inside a magnetized chamber. An MRI brain scan is painless and is useful in detecting multiple sclerosis and brain tumors.
(MRI): A brain imaging technique that provides high resolution pictures of brain structures, is relatively non-invasive, and shows changes in real time.
A diagnostic procedure which produces visual images of different body parts without the use of X-rays. Nuclei of atoms are influenced by a high frequency electromagnetic impulse inside a strong magnetic field. The nuclei then give off resonating signals which can produce pictures of parts of the body. An important diagnostic tool in MS, MRI makes it possible to visualize lesions in the white matter of the brain and spinal cord.
A test that makes the take pictures of soft tissues in the body. These are images which are better than x-rays for some structures.
A type of diagnostic radiography using electromagnetic energy to create an image of soft tissue, central nervous system and musculoskeletal systems.
A method of taking pictures of the soft tissues in the body that are clearer than those obtained by X-rays, and without radiation.
The use of nuclear magnetic resonance of protons to produce cross-sectional proton density images of internal structures of the human body.
Magnetic radio frequency energy used to see internal structures of the body, including bone, discs, and nerves without the use of x-rays.
An imaging technique that can be used to visualize any/all parts of the body. The scan is painless and does not involve radiation.
a test that produces high-quality still and moving pictures of the heart and large blood vessels. Unlike an X-ray machine, MRI uses large magnets and radio-frequency waves to produce pictures of internal structures. MRI delivers information about the heart as it is beating by creating moving images throughout the pumping cycle.
A procedure that uses large magnets and radio waves to produce computer-generated pictures of internal organs. These images can help spot bone metastases as well as other problems such as infections in the bone.
a diagnostic technique that provides high-quality cross-sectional images of organs and structures without using x-rays or radiation.
a diagnostic test that produces very clear images of the human body without the use of X-rays. An MRI may be recommended if you are getting daily or almost daily headaches. An MRI may also be recommended if a CT scan does not show definitive results. In addition, an MRI scan is used to evaluate certain parts of the brain that are not as easily viewed with CT scans, such as the spine at the level of the neck and the back portion of the brain.
A scanning technique that creates pictures of the inside of the body and the brain; uses a strong magnet (does not use x-rays); more sensitive than CT.
An imaging technique used in diagnosing certain diseases. Using electromagnetic radiation, images can be obtained of the internal soft tissues such as the brain, spinal cord and other major organs. more...
(mag-NET-ik REZ-o-nans IM-a-jing) MRI. A procedure in which radio waves and a powerful magnet linked to a computer are used to create detailed pictures of areas inside the body. These pictures can show the difference between normal and diseased tissue. MRI makes better images of organs and soft tissue than other scanning techniques, such as CT or x-ray. MRI is especially useful for imaging the brain, spine, the soft tissue of joints, and the inside of bones. Also called nuclear magnetic resonance imaging.
a non-invasive procedure that produces two-dimensional view of an internal organ or structure, especially the brain and spinal cord.
A diagnostic test that uses radio waves and a strong magnet to image soft tissues in the body. MRA images the arteries, MRV images the veins.
Use of a magnetic field along with radio frequency waves to create images of tissue and body parts. Unlike CT scanning and X-rays, it does not utilize ionizing radiation.
an imaging process whereby the magnetic signature of molecules in regions of the body (eg the brain) are detected and converted into pictures by computer. It is a useful tool that helps the physician to actually see brain lesions in people with MS.
An imaging technique that produces cross-sectional images for medical research. The object to be viewed is exposed to a radio frequency field in the presence of a varying electromagnetic field.
A technique that uses a powerful magnet linked to a computer to create detailed pictures of areas inside the body.
A type of scan that, instead of X-rays, uses a large, powerful magnet to create an image (picture) of part of the body
an imaging technique which uses radio waves, magnetic fields, and computer analysis to create a picture of body tissues andstructures.
Uses a combination of a huge super-conductive magnet, electromagnetic waves, and a sophisticated computer system to create very detailed images of the body's interior.
a type of scan which uses a strong magnetic field to build up pictures of the inside of the body. It works by detecting water molecules in the body's tissue which give out a characteristic signal in the magnetic field.
the use of a nuclear magnetic resonance spectrometer to produce electronic images of specific atoms and molecular structures in solids, especially human cells, tissues and organs
A non-invasive imaging method using magnetic fields and radio waves to create images of the body
Method that uses a magnetic field to produce pictures of the structures inside the body. Produces better images of organs and soft tissues than other scanning technologies such as X-rays. Particularly useful for imaging the brain and spine, as well as the soft tissues of joints and the interior structure of bones.
An imaging technique that produces high-quality images of the inside of the human body.
An imaging method using magnets instead of X-rays. Produces detailed pictures of the internal structure of the brain.
A diagnostic test that uses a strong magnet to reveal and create pictures of different areas of the body, including blood vessels.
MRI. This is a type of imaging involving the use of magnetic fields linked to a computer to create detailed pictures inside the body and head, and detect subtle changes in the tissues. MRI can be used in the diagnosis of cancer (Find links to specific cancers in " Cancer: What It Is") as well as to identify damage from a heart attack, diagnose certain congenital heart defects, evaluate blood vessel problems, and aid in the evaluation of stroke damage. (Read about " Heart Attack" " Congenitial Heart Defects" " Stroke" " Cardiovascular Tests")
a noninvasive, non-x-ray diagnostic technique based on the magnetic fields of hydrogen atoms in the body. MRI provides computer-generated images of the body's internal tissues and organs.
a technique that uses magnetic fields and radio waves to create high-quality cross-sectional images of the body without using radiation
A type of scan using magnetic fields that provides detailed pictures of your anatomy.
A body scanning technique, which uses an intense magnetic field to generate images of the internal organs. Properties of normal and cancerous tissue differ, allowing malignant tumors to be visualized by computer processing of the signals detected.
A computer–assisted technique for creating cross–sectional images by exposing a subject to radio waves in the presence of a powerful magnetic field and measuring signals emitted by certain atoms in the affected area in response to this treatment.
This equipment uses a magnetic field to capture an image and can provide a three-dimensional image of the brain.
Imaging procedure in which a radio frequency pulse causes certain electrical elements of the injured tissue to react to this pulse and through this process a computer display and permanent film establish a visual image. MRI does not require radiation and is very useful in the diagnosis of soft tissue, disc and meniscus injuries.
A technique used to image internal structures of the body. MRI images display better contrast in soft tissues than computed tomography (CT) images, but they do not contain information about tissue density, and they are more susceptible to geometric distortion.
(MRI) A sophisticated technique to examine the body using powerful electromagnets, radio-frequency waves, and a computer to produce internal pictures of the body.
a machine that uses magnetic forces to obtain detailed images of the body
A painless, non-invasive technique using strong magnetic fields to produce detailed images of internal body structures. An MRI scan usually takes about 45 minutes.
A diagnostic test that uses a magnetic field to transmit signals from the hydrogen ions in your body. These are processed through a computer and produce a tissue image without the use of a contrast medium.
Special pictures of the inside of the body. Like the CT Scan, the patient needs to lie still on a table. The table moves so that the patient's entire body is in the tunnel of the magnet. The machine makes grinding noises while the pictures are taken.
A noninvasive procedure whereby extremely powerful magnets are used to produce images of the body, particularly effective in showing the body's cells, tissues and organs.
Scan using magnetism to build up a picture of the organs inside the body. These scans are painless, but are very noisy. You should tell your doctor if you have a pacemaker or any metal parts inside your body (such as joint replacements or surgical clips) as this may mean you cannot have this type of scan.
A type of imaging test that does not use radiation, and provides very detailed images of the inside of the body. To obtain good images, the patient should lay still while the body is being scanned. Now that MRI machines take only a few seconds to do this, it is possible to obtain detailed images of the fetus
A scan of the brain or other part of the body that employs magnetic and low-energy radiowaves. No radioactive materials or dyes are needed
a brain-scanning technique that relies on strong magnetic fields to construct computer-generated images of the brain or body. (87)
A test that takes pictures of the soft tissues in the body.
a noninvasive diagnostic technique that uses magnetic fields to detect subtle changes in brain tissue.
Magnetic Resonance Imaging is a test that is performed utilizing state-of-the-art MRI equipment with specialized adjustments to allow the heart to be visualized while it is beating. It is often used to evaluate patients with suspected Brugada syndrome, and to rule out any other heart abnormalities such as Arrhythmogenic Right Ventricular Dysplasia.
A technique that uses an intense magnetic field to generate images of the internal organs. Properties of normal and cancerous tissue differ, and this allows malignant tumors to be visualized by computer processing of the signals detected.
painless method of diagnosis using powerful magnets and computers to give detailed images of the inside of the body.
A diagnostic technique that uses the response of atoms to a magnetic field to produce cross-sectional images of the body's internal structures.
a diagnostic radiological modality, using nuclear magnetic resonance technology. It provides superior three-dimensional images of the body's interior, delineating muscle, bone, blood vessel, nerve, organ and tumor tissue. A type of diagnostic radiography that uses the characteristic behavior of protons (and other atomic nuclei) when placed in powerful magnetic fields to make images of tissues and organs.
A modern medical imaging technology for diagnosis. MRI employs reflected radio waves to get safe and reliable computer images of internal body organs.
Technique that uses magnets to produce images of the structure and function of organs.
A test that produces high-quality images of the body's internal structures without the use of X-rays. MRI uses a large magnet, radio waves, and a computer to produce these images.
A computerized scanning technique that uses magnet fields to create images of internal organs.
An imaging method that uses magnetic fields, radio waves, and a computer to produce a detailed picture of the inside of the body
A diagnostic technique that uses a strong magnetic field to produce computerized images of internal body tissues.
a diagnostic and research technique that uses magnetic fields to generate a computer image of brain anatomy. MRI can now also be used to measure brain activity.
Magnetic Resonance Imaging (MRI) is a noninvasive method which utilizes the properties of magnetism to create nondestructive, three-dimensional, internal images of the soft tissues of the body, including the brain, spinal cord and muscle.
A method of creating images of the body using magnetic field and radio waves rather than x-rays. Although the images are similar to those of CT scans, they can be taken in all three directions rather than just in cross-sections.
An imaging technique used to visualise the soft tissue inside your body. MRI combines a powerful magnet with radio-frequency pulses. These collect signals that are then processed by a sophisticated computer to form pictures of inside your body. MRI gives highly detailed pictures of the soft tissues within the body, for example muscles and ligaments. This capability means Doctors can use MRI in a wide range of investigations: from slipped discs and brain tumours, to painful or injured joints to the assessment of blood flow.
An imaging technique based on the principles of NMR. [ Chapter 1
a diagnostic technique in which radio waves generated in a strong magnetic field are used to provide information about the hydrogen atoms in different tissues within the body; a computer uses this information to produce images of the tissues in many different planes
a non-invasive procedure that produces detailed, two-dimensional views of an internal organ or structure.
A diagnostic procedure that uses a special imaging technique with a powerful magnet and a computer to provide clear images of soft tissues. Tissues that are well-visualized using MRI include the brain and spinal cord, abdomen, and joints.
A noninvasive test that uses powerful magnets and radio waves to create pictures of the inside of the body. MRI does not use x-rays; MRI imaging is based on the magnetic properties of atoms.
a method of taking pictures of the inside of the body. Instead of using x-rays, MRI uses a powerful magnet and transmits radio waves through the body. The images appear on a computer screen as well as on film. Like x-rays, the procedure is physically painless, but some people find it psychologically uncomfortable to be inside the MRI machine.
Medical imaging that uses radiofrequency radiation as its source. MRI is a noninvasive diagnostic technique that can provide information on the form and function of internal tissues and organs of the body.
A radiographic study based on the acquisition of anatomical information using resonance from atoms in a strong magnetic field.
A technique that employs magnetic fields and radio waves to create detailed images of internal body structures and organs, including the brain.
a non-invasive scanning technique that enables investigators to see and track MS lesions as they evolve.
is an imaging procedure that creates 3-D pictures of the inside of the body.
A medical procedure using a magnet linked to a computer to picture areas inside the body.
A special imaging technique used to image internal structures of the body, particularly the soft tissues. A MRI image is often superior to a normal X-ray image. It uses the influence of a large magnet to polarize hydrogen atoms in the tissues and then monitors the summation of the spinning energies within living cells. Images are very clear and are particularly good for soft tissue, brain and spinal cord, joints and abdomen.
Is a non-invasive procedure that uses powerful magnets and radio waves to construct pictures of the body. Any imaging plane (or "slice") can be projected, stored in a computer, or printed on film. MRI can easily be performed through clothing and bones. However, certain types of metal in the area of interest can cause significant errors in the reconstructed images.
A new and powereful technique that produces images of deep internal body structures. This procedure uses magnetic fields rather than radiation to obtain the images.
Uses magnetic fields and radio waves to construct images of internal body structures.
Study of the body using variations of the magnetic field. This technique, as well as the CT, can produces body images at predetermined planes: like slicing through a loaf of bread and seeing the details of each slice.
A test that uses powerful magnets and radio waves to create detailed pictures of structures and organs inside the body.
A diagnostic test that uses a combination of magnetism and radiowaves to build up detailed cross section pictures of part of a person's body.
A brain scanning technique that generates cross-sectional images of a human brain by detecting small molecular changes. MRI scans reveal a contrast between normal and abnormal tissues. The image produced is similar to those generated by CT scans. There are no side effects or risks associated with MRI scans, although MRI can affect electrical devices like pacemakers and hearing aids.
medical imaging that uses radio frequency radiation as its source of energy. MRI can detect brain damage following a violent episode of shaking. Can also detect any previous damage done to the brain.
A painless method for taking pictures of internal organs. A tube-like machine with a powerful magnet generates images of the inside of the body.
A test which uses an external magnetic field instead of x rays to visualize different tissues of the body.
A scanning procedure that uses radio waves and magnets to show images of body parts. This technique is generally used to visualize soft tissues.
use of a strong magnetic field to produce images of its internal effects of the body; especially useful for soft tissues
Magnetic resonance imaging is a noninvasive procedure that uses radio waves and magnetic fields to produce images of body tissue.
An imaging technique which uses radio waves, magnetic field, and computer analysis to create a picture of body tissues and structures.
In congenital heart disease, MRI technology uses the body's magnetic field and high-tech computers to "reconstruct" images of the heart, blood vessels, lungs and trachea. MRI can be used in virtually all patients, unless there are metal structures (e.g., pacemaker) in the chest.
a diagnostic procedure that uses a combination of large magnets, radiofrequencies, and a computer to produce detailed images of organs and structures within the body.
Produces cross-sectional images of the body without use of radiation.
a non-invasive, non-X-ray diagnostic technique that uses magnetic fields to provide computer-generated images of the body's internal tissues and organs.
A technique that produces images of the heart and other body structures by measuring the response of certain elements in the body (such as hydrogen) to a magnetic field. When stimulated by radio waves, the elements emit distinctive signals in a magnetic field. MRI can produce detailed pictures of the heart and its various structures without the need to inject a dye.
A diagnostic radiological modality, using nuclear magnetic resonance technology, in which the magnetic nuclei (especially protons) of a patient are aligned in a strong, uniform magnetic field, absorb energy from tuned radiofrequency pulses, and emit radiofrequency signals as their excitation decays. These signals, which vary in intensity according to nuclear abundance and molecular chemical environment, are converted into sets of tomographic (selected planes) images by using field gradients in the magnetic field, which permits 3-dimensional localization of the point sources of the signals.
A non-invasive procedure which uses powerful magnets and radio waves to construct pictures of the abdomen and its organs, allowing surgeons to map them in detail prior to surgery. Source: Medline Plus
A special radiology technique designed to image internal structures of the body using magnetism, radio waves, and a computer to produce the images of body structures.
A diagnostic test that produces three-dimensional images of body structures using magnetic fields and computer technology. It can provide an accurate view of the brain, cerebellum and the spinal cord, is very good at defining the extent of malformations, and distinguishing progression. The MRI provides more information than the CT scan when analyzing the back of the brain and spinal cord, and is usually the preferred test.
A noninvasive diagnostic procedure using radio waves and magnetic fields to provide a highly detailed map of an interior structure of the body, such as the brain. MRI depicts detailed internal anatomy by exploiting the interaction of the magnetic properties of atoms with an external magnetic field.
An imaging technique that uses magnetic fields to take pictures of the structure of the brain.
A diagnostic tool that in pregnancy can yield a clearer picture of the fetal condition than ultrasound can provide.
A computer-based scanning procedure that uses strong magnetic fields and radio-frequency pulses to generate a picture of a cross section of the brain or body. Provides greater precision than the CT scanner.
Magnetic resonance imaging (MRI), formerly referred to as magnetic resonance tomography (MRT) or, in chemistry nuclear magnetic resonance (NMR), is a non-invasive method used to render images of the inside of an object. It is primarily used in medical imaging to demonstrate pathological or other physiological alterations of living tissues.
Magnetic Resonance Imaging is a multidisciplinary journal published by Elsevier, encompassing biology, physics, and clinical science as they relate to the development and use of MRI technology. The publication of Magnetic Resonance Imaging began in 1982, and is currently managed by editor-in-chief John C. Gore.
Feb 8, 11:54 AM EST
a developing technology that determines the amount of blood the heart pumps out with each beat, providing a good indication of overall heart function.