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Ultrasound & Echocardiography | CT Questions | MRI Questions | X-ray Questions


How long is this going to take?
The average MRI exam takes between 25 and 60 minutes, depending upon the area and anatomy to be imaged.
Why does this take so long?
MRI takes longer than CT and X-ray. This is because MRI produces images in a completely different way. The MRI machine actually collects signals from the body that are used to create images. It takes time to collect enough signals to produce an image of high quality. The average MRI scan is between 3 and 6 minutes long. The average MRI exam may consist of 4 to 12 individual scans.
Why is this so loud?
All MRI machines make noise. This is due to components within the machine being powered on and off very rapidly, making an audible noise. Many people are surprised to find out that there are actually no moving parts within the machine! Older systems can be quite loud, often requiring hearing protection. IRG utilizes the quietest MRI systems available.
Is the MRI dye safe?
MRI contrast (“dye”) is extremely safe. Additionally, MRI exams require significantly less contrast than CT scans. Because IV contrast agents are removed from the blood by the kidneys, the technologist will ask you if you have a history of kidney disease, poor kidney function or dialysis. If you have poor kidney function, contrast may not be administered.
What is the difference between this and a CT?
MRI and CT both image the body. The way they image the body is very different, thus the information the images contain is very different. Your doctor knows which method of imaging is appropriate to get the information he/she needs.
How safe is an MRI exam?
MRI utilizes strong magnetic fields and radio wave energy. Magnetic fields and radio waves are not harmful to the human body, they can however interact with metal or implanted medical devices within your body. You will be screened for such items prior to your MRI exam. Most items are perfectly safe with a few important exceptions, such as a cardiac pacemaker.
Why can't I move during the test?
Like many imaging systems, we need to image the body while it is “holding still” in order to get a clear picture. For this reason, it is really no different than taking a picture with your camera, if you move the camera while taking a photograph or the object moves while taking the picture, you get a blurry image. This same principle applies to medical imaging in most cases.