: Magnetic Resonance Angiography of Veins

: What the Test Does

: This study uses a magnetic resonance imaging (MRI) scanner to visualize the venous system. It can produce images of veins in the head, neck, or other areas depending on what your doctor has ordered. The test may be done with or without a contrast agent, and a technologist will guide you through the process.

: How to Prepare

: Your care team will give you specific instructions before the exam. You may be asked to avoid certain foods or drinks, and you should tell staff about any metal implants, pacemakers, or medical devices, because strong magnets are used. Also report if you are or may be pregnant, or if you have kidney problems, especially if contrast dye might be used.

: What to Expect During the Exam

: You will usually lie on a table that slides into the scanner. The machine makes loud tapping noises, so earplugs or headphones are often provided. You need to stay very still while images are captured, and the scan typically lasts a number of minutes. If contrast is used, it is given through an IV line.

: After the Test

: Most people can return to normal activities right away. If contrast dye was used, drinking fluids may be recommended. A radiologist reviews the images and sends a report to your doctor, who will discuss the results with you.