Similar to X-ray or CT scans (computerized tomography), an MRI Scan gives a precise picture of the scanned part of the body by using magnetic waves. But unlike CT scans, MRIs are done without any radiation. MRIs are further divided into two categories; Contrast and non-contrast. Not many know about the latter. To answer the question as to what Contrast Mri is, the explanation is rather simple. Contrast MRI differs from the regular MRI because it uses contrast dye which is injected into a patient prior to the scan. If you have been recommended to have a contrast MRI scan, here is what you need to know.
Uses and Advantages
Contrast MRIs are ordered by the physicians because they provide vivid images of certain conditions of the body. At times, the physician may also recommend a contrast MRI when the regular MRI fails to obtain render satisfactory image. Moreover, contrast MRI has proven to be worthy for in those cases where in the patients have undergone a back surgery. Not only does contrast MRI dye render clearer images but sharper images as well.
What’s involved in a Contrast Injection?
The key component involved in contrast injection is Gadolinium, which is a paramagnetic metal ion, is commonly used in contrast MRIs. It is used because of the way it travels within magnetic fields. In fact, it’s used in about 30 percent of MRI scans. To inject gadolinium or another type of contrast material, the technician will place a tourniquet and use an IV or a small butterfly needle. On an estimated basis, 10-20 milliliters of dye will be injected in the vein of the patient. The injection roughly takes 10-30 seconds. In the next step, the radiologist removes the needle and places the patient into the MRI machine for commencing the scan process. The gadolinium contrast medium can also be dispensed with the use of an automated injector.
How to Prepare
There is no such special preparation required to go for contrast MRI exam. The patient may continue to eat normally and keep taking their medicine unless told otherwise. To be on the safe side, it is always better to chalk out a diet plan or prescribed medication with your physician before making any changes. You’ll have to complete a screening form in which you will note any health conditions that could present a health risk or interfere with your exam. You’ll also be interviewed by a technician to make sure you understand all the questions on the screening form. You can’t wear anything that’s metallic, so you’ll have to remove metal jewelry, watches, hairpins and other items. Some of the potentially harmful and magnetic field attracting articles include magnetic strip laced credit cards, belt buckles, shoes, pens, keys, coins, hearing aids and all electronic devices. Most importantly, you should relax during your scan. To get over any of your doubt or concerns, discuss all the possible side effects with your physician or technician who would carry out the scan. Lastly, do not have any second thoughts about contacting mri test lab in Delhi.
