Frequently Asked Questions (FAQs) on MRI

Here are answers to the most common questions about MRI. If you have more questions, please don't hesitate to call us at 9814509814. We're here to help!

What does MRI mean and how is it different from an MRA?

MRI, magnetic resonance imaging, is a state-of-the-art technique that allows doctors to see inside the human body in remarkable detail without using x-rays. MRI images are produced with the use of a powerful magnetic field, radio waves, and a sophisticated computer system. The procedure is safe, painless, and, in many cases, saves the cost of hospitalization and numerous other studies.

What is the difference between an MRI and a CT scan?

Both MRI and CT scans make cross-sectional images (slices) of pretty much any area of the body using a sophisticated computer system. The major difference is that an MRI uses a large magnet and radio waves to produce images while a CT scanner uses x-rays. Therefore, with the MRI studies, there is no exposure to x-rays. Both systems complement each other well as they both have their inherent strengths and weaknesses; however, CT usually can only directly acquire transverse (or crosswise) images, whereas MRI can directly acquire slices in any plane. In addition, MRI is superior when it comes to soft tissue contrast, and there are no known side effects. The ability to view pictures from multiple directions, high tissue contrast, and lack of x-rays make MRI a very powerful and increasingly popular imaging tool. Please note, MRI is very sensitive to motion during the acquisition of pictures and, in some instances, CT is preferable if the patient is unable to hold still.

Is there any type of preparation as far as eating prior to the scan?

For most MRI studies, there is no special preparation prior to the scan; however, for a select few abdominal studies we do ask that you not eat anything for four hours before the MRI. That is why it is important to call us a few days ahead of time to pre-register and go through instructions.

Can you scan my whole body while I'm in there?

No. This is one way that an MRI differs from some other scans. With the MRI scanner, we can image just about any part of the body; however, each scan is limited to a specific body part or area. Each area we scan takes from 30-60 minutes.

How long will my scan take?

The average MRI study takes about 30-45 minutes. Some scans may be shorter and some a little longer.

Is MRI superior to other imaging techniques (CT-scan, x-ray, etc.)?

Often, yes. MR images can be made from many different angles to give a better view of the tissues in question. MRI can also provide a level of detail that is often difficult to achieve with x-rays or other imaging systems. Because it captures relatively subtle difference in shape and appearance, an MRI image can help your doctor determine which tissues are healthy and which are not. Best of all, you will not be exposed to any radiation when you receive an MRI scan.

What does "High Field" mean?

When you are in a MRI scanner your body puts off a signal that is picked up by our imaging coil. Generally speaking, the higher the field strength of the magnet, the higher the signal received by the imaging coil. The higher the signal, the better the image quality. Magnets are categorized by their field strength. Magnets of 1.0 Tesla or higher are considered high field magnets. Magnets between .5 Tesla and 1.0 Tesla are considered mid-field magnets. Magnets below .5 Tesla are considered low field, or open, magnets. We employ two "High-Field" magnets at Superb MRI Center : “GE Twin Speed with EXCITE” and “ Siemens Symphony Quantum”.

What if I am claustrophobic?

If you know this in advance of the exam, please discuss this with your physician. He/she can prescribe an oral medication to help you relax. Follow your physician's instructions about when to take your prescription. Even if you are claustrophobic, our technologist and patient care associate will work with you to help you feel at ease throughout the exam.

Can anyone have an MRI scan?

The following items are important in helping us determine whether you qualify for an MRI scan. We will talk with you in detail about whether:
You are pregnant
You've ever had surgery
You have any implants, especially in your eye, ear, brain or heart
You have cardiac valve replacements or a pacemaker, bone or joint replacements or aneurysm clips.
These conditions may not exclude you from having an MRI exam, but they'll be important determining factors. For example, patients with a cardiac pacemaker or certain brain aneurysm clips cannot safely have an MRI exam. Also, in some cases, infants, small children, claustrophobic patients and/or those with severe pain or physical limitations may not be able to lie still for an MRI exam without sedation.