MRI Peripheral Angiograms With Contrast is generally considered safe, but it may carry some risks, particularly for patients with certain health conditions or implanted medical devices. Patients should inform their doctor and the imaging technician if they have any concerns or health conditions that may affect the test. The test is painless and non-invasive, but patients will need to lie still during the procedure, which can last up to an hour. The use of contrast agents can cause some patients to experience mild discomfort, such as a warm sensation or a metallic taste in the mouth. Patients should inform the imaging technician if they experience any discomfort or side effects during the test.