An arthrogram is a focused image of the joint using a contrast medium, or dye, injected directly into the injured joint, instead of in a vein). The on-sight radiologist uses fluoroscopy (a continuous X-ray “movie”) to direct the contrast needle into the proper position before and during injection. Once complete, images are taken using an MRI to monitor how the contrast moves and highlight any potential injury. The arthrogram diagnoses specific joint injuries more clearly and effectively than an MRI alone.
A wide variety of joints can be imaged using MRI arthrography. Hips, shoulders, elbows, wrists, knees and ankles are examples of the most common exams. When you arrive at the Radiology department and you’ll receive an injection in your joint using fluoroscopic guidance (x ray). After the injection, we’ll take you to the MRI department for imaging. We’ll give you ear plugs and headphones for hearing protection and to hear instructions. Special eyeglasses with mirrors can also be worn to help alleviate any discomfort from being enclosed.
Depending on the joint being imaged, you can anticipate the exam lasting from 30-60 minutes.