Magnetic resonance imaging (MRI) is a test that uses a magnetic field and pulses of radio wave energy to make pictures of organs and structures inside the body. This is useful for diagnosis of conditions such as stroke, congenital defects, bleeding, infarcts, tumours of brain. What does "MRI" stand for and how does it work? MRI stands for Magnetic Resonance Imaging. MRI uses the principle of magnetic resonance. Using the natural magnetic property of our body, the MRI machine is able to form images that help us diagnose the problem. Why is MRI such a good modality? MRI allows us to exquisitely see different parts of the body. In the brain, it allows us to differentiate between different areas. In the spine, MRI is the only modality that allows us to see the spinal cord. In joints, MRI allows us to view the internal parts of the joints, including ligaments, tendons and menisci. It also allows evaluation of various cardiac structures, as well as functional imaging of various parts of the brain. MRI does all this by sectioning the body in different planes. Just as it is necessary to slice a loaf of bread to know the quality of the slices, so also, MRI allows us to section the body to view its inner parts. Thus, the skull X-ray only shows us the outer part, whereas MRI shows us the inner parts of the brain. Where is MRI useful? All parts of the body can be scanned with MRI, but it is most useful in the brain, spine, bones, joints and the heart. It also has specific uses in other parts like the chest, abdomen and pelvis. For each part, there are specific indications or reasons for scanning. The referring doctor and the consultant radiologist are the best judges of the usefulness of MRI scanning in a specific situation and area. Are there any dangers in MRI scanning? Not ordinarily. However if you have any magnetizable items on or in your body, such as aneurysm clips, pacemakers, cardiac prostheses, metallic implants, etc. please inform us immediately, as there could be a problem related to these metallic items. What is the injection that I may receive? If necessary, you may be injected with a gadolinium-based dye to see things better.
A head MRI is a useful tool for detecting a number of brain conditions, including:
SLAs:For MRI test scheduled before 8 AM eConsultation will be scheduled before 9 PM same day and the physical reports to be delivered by 10 PM same dayFor MRI test scheduled after 8 AM eConsultation to start from 8 AM next day and the physical reports to be delivered starting from 8 AM next dayFACILITATOR:Arrive at the hospital with the patient atleast 2hrs before the scheduled time of appointment.Confirm the compliance of preparations required. Ask the patient to wear comfortable clothes free of metals, zippers, hooks.
SLAs:For MRI test scheduled before 8 AM eConsultation will be scheduled before 9 PM same day and the physical reports to be delivered by 10 PM same dayFor MRI test scheduled after 8 AM eConsultation to start from 8 AM next day and the physical reports to be delivered starting from 8 AM next day
Magnetic resonance imaging (MRI) of the head is a painless, non-invasive test that produces detailed images of your brain and brain stem. An MRI machine creates the images using a magnetic field and radio waves. This test is also known as a MRI Brain with contrast or a cranial MRI. You will go to a hospital or radiology center to take a head MRI. An MRI scan is different from a CT scan or an X-ray in that it doesn�t use radiation to produce images. An MRI scan combines images to create a 3-D picture of your internal structures, so it�s more effective than other scans at detecting abnormalities in small structures of the brain such as the pituitary gland and brain stem.
Sometimes a CONTRAST agent or dye can be given through an intravenous (IV) line to better visualize certain structures or abnormalities in MRI with contrast.