Pituitary Gland MRI Quick Reference Guide for Physicians

Contrast MRI is the only way to adequately evaluate the pituitary gland. For all pituitary lesions, MRI offers multiplanar capabilities and soft tissue contrast essential in detecting these lesions. The larger sella tumors pose no imaging problem. We routinely do dynamic contrast imaging for the evaluation of pituitary lesion, since this is very sensitive to microadenomas, which exist within the substance of the pituitary gland. The study is routinely done without and with contrast.

Patient Preparation

A current creatinine (within 45 days) is needed on all patients over the age of 60, as well as patients that have high blood pressure, diabetes, acute vascular disease, or a history of kidney disease. Please fax these results with the order. Patients will need to remove all jewelry, hairclips, pony-tails and bobby pins. In addition, the patient will need to remove all clothing containing metal. This would include bras with metal enclosures and jeans with metal zippers and buttons. Your patient will be provided a gown and a secure locker in which valuables can be placed. If your patient is claustrophobic, you may wish to prescribe a mild sedative for him/her prior to the exam.

CPT Code:

• 70551 with contrast
• 70553 with/without contrast

Patient Weight Limit

Our MRI equipment has a weight limit of 440 pounds. 

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General Information

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.

Contraindications

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.

Risks

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.

Nephrogenic systemic fibrosis is currently a recognized, but rare, complication of MRI believed to be caused by the injection of high doses of MRI contrast material in patients with very poor kidney function.

What Happens During the Test?

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. Some MRI examinations may require an injection of contrast material into a vein in the arm. 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. Plan 60-90 minutes of total clinic time. The scan time can vary from 30-60 minutes depending on the study. You may resume normal activities following the MRI.

The Results

A radiologist will analyze the images and send a signed report to the referring physician within 1 business day.