DEAR MAYO CLINIC: I have had an acoustic neuroma for 10 years. When it was first diagnosed, I had fractionated stereotactic radiosurgery. Since then, I've had 18 MRIs with gadolinium injections. Have ...

Contrast agents are often used in diagnostic technologies like MRIs. There are many different types of contrast agents, which can make tissues much easier to see against the background fluids of the ...

MRI preparation depends on the type of scan, the area of your body being scanned, and whether the scan requires contrast dye. It’s important to discuss prep with your doctor beforehand. In rare, ...