Are MRI scans harmful? Hyderabad-based doctor reveals 6 surprising truths about this procedure
MRI scans are among the latest imaging technologies in contemporary medicine. They're commonly used to identify a variety of conditions, ranging from brain tumors to spinal problems.
But are they safe for all? Dr. Sudhir Kumar, a well-known Hyderabad-based neurologist, explains the most critical things you need to know before you enter an MRI machine.
Metals in your body can be hazardous
MRI machines employ powerful magnetic fields, which can cause metal objects in your body to respond adversely. This might include pacemakers, cochlear implants, surgical clips, or even shrapnel. If you have metal implants, you need to inform your doctor beforehand.
Occasionally, other imaging techniques, such as CT scans might be suggested for your protection.
Pregnancy and MRI are a big NO!
MRIs do not employ radiation, so they are safer to use during pregnancy than X-rays. Nonetheless, physicians will normally avoid performing MRI scans in the first three months unless it is medically necessary. If a contrast dye is required, the risk is even greater. Pregnant patients must always notify their physician so the scan may be postponed or adjusted if necessary.
Contrast dye is not for everyone
A few MRIs employ contrast dye to help show up specific areas of the body. Although it aids in obtaining more distinct images, the dye can be problematic in individuals with kidney disease or allergic reactions. Dr. Kumar recommends having kidney function tests prior if there's a question. Always inform your medical history and allergies prior to the scan.
Claustrophobia is a real concern
Most individuals are nervous or panicked within the confining MRI tube.
The confining space, in addition to the loud sounds, is overwhelming, particularly with individuals with claustrophobia. Dr. Kumar recommends talking to your physician if you are apprehensive. Mild sedatives or open MR machines can be employed to make it more tolerable.
While inside, the machine can get louder
One surprise that most are not prepared for is the thumping and knocking noises made during an MRI test. They are normal, but startling. Hospitals will generally offer earplugs or headphones to minimize discomfort.
If you are sensitive to noise, request ahead of time a noise-cancelling feature or soothing music to assist in the ease of the procedure.
Staying still is very important
MRI scanners are very sensitive, and even slightly will blur the scan. So you might have to hold still for 15 to 45 minutes, depending on what is being scanned. If you move even a fraction of an inch, it could be necessary to redo the entire procedure. You should try to relax, close your eyes, and breathe evenly to remain calm and motionless.
MRI scans are generally safe and very accurate. But as Dr. Sudhir Kumar correctly suggests, they aren't a universal solution. Being aware of the risks—particularly if you have implants, kidney problems, or claustrophobia, can facilitate your experience. Always talk to your doctor and disclose your entire medical history before the scan.
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