Hida scan with ejection fraction (EJF), is a two part study to determine the ability of the gallbladder to accumulate, and then excrete bile. The first part is done over a one hour period, and can be done on any patient. The second part, the ejection fraction, cannot be done unless it is preceded by an ultrasound that indicates that there are no stones in the gallbladder.
Exam time is approximately one and a half hours.
The patient should fast four hours prior to the exam. During the procedure, the patient may be asked to change clothes and wear an exam gown.
Wearing loose fitting jogging clothes with no metal objects may allow you to avoid changing clothes.
A small amount of radioactive substance will be injected into a vein, and images will be acquired for 30 minutes while lying in a reclined position beneath a large, specialized camera.
After a one hour delay, from the time of the first injection, the second injection of a small of an enzyme will be administered. This will create a contraction of the gallbladder, and a computer-generated image will determine the amount of the contraction.
If the gallbladder excretes less than 35%, there is a possibility of a diseased gallbladder. Your referring physician will notify you of the results and further steps to take.
Images are acquired and stored digitally, and the report and images will be made immediately available to your referring physician. Following the exam, the patient may resume his/her normal diet and activities.