Common uses of an MR arthrogram include:
An MR arthrogram requires the injection of contrast material into the joint being studied. This contrast will aid in the diagnosis of abnormalities on the ensuing MRI.
For the MRI exam, if claustrophobia or anxiety is a problem, your referring physician may wish to prescribe a mild sedative to be given prior to the study. No other pre-visit preparation is necessary. You will need to remove all jewelry, hairclips, pony-tails and bobby pins. In addition, avoid wearing clothing with metal. You will need to remove all clothing containing metal. This would include bras with metal enclosures and jeans with metal zippers and buttons. You will be provided a gown and a secure locker in which valuables can be placed.
Our MRI equipment has a weight limit of 440 pounds.
MR imaging uses a powerful magnetic field, radio frequency pulses and a computer to produce detailed pictures of organs, soft tissues, bone and virtually all other internal body structures. MRI does not use ionizing radiation (x-rays). Detailed MR images allow physicians to better evaluate various parts of the body and determine the presence of certain diseases that may not be assessed adequately with other imaging methods.
Patients with cardiac pacemakers, ICD, or neuro-stimulators CAN NOT have an MRI. Patients with pins, plates, screws and joint replacements, stents & filters can have an MRI as long as it has been 6 weeks since placement of the device. Women who are pregnant should avoid having an elective MRI. Women who are pregnant and need an MRI should be individually evaluated for risk vs. benefits and should avoid an MRI in the 1st trimester of pregnancy.
Although the strong magnetic field is not harmful in itself, implanted medical devices that contain metal may malfunction or cause problems during an MRI exam.
There is a very slight risk of an allergic reaction if contrast material is injected. Such reactions usually are mild and easily controlled by medication. If you experience allergic symptoms, a radiologist or other physician will be available for immediate assistance.
For the contrast injection, the radiologist will explain the procedure to you, and obtain a consent for the procedure. You will be positioned on the x-ray examination table in the fluoroscopy room. Next, the skin around the joint is cleansed with antiseptic and covered with a sterile drape. The skin and soft tissues are numbed by local anesthetic injected into the area. A needle is then inserted through this numbed skin into the joint space. Contrast material is injected into the joint space and the needle is removed. You will experience a slight pinprick and may feel a momentary burning from the local anesthesia used to numb the area. The patient may feel a fullness as the joint is filled with contrast.
For the actual MRI arthrogram study, you are then transferred to the MRI scanner. You will be asked to lie down on his back on the scanning table. The table will then slide into the scanning area. During the test, the MRI will make a rapid tapping noise. Your experience and comfort are of key importance. Therefore, you can watch TV, be offered earplugs or a music headset; in addition blankets are also available. You should relax and remain still during the exam. You should plan 45-90 minutes of total clinic time. The scan time can vary from 20-60 minutes depending on the study. You may resume normal activities following the MRI.
A radiologist will analyze the images and send a signed report to the referring physician within 1 business day.
If you have any questions or concerns about your procedure, feel free to call us at 203-453-5123 or contact us online.
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