I just had a HIDA scan last Friday. This procedure tests how well your gallbladder is functioning. Polpys, growths, etc cannot be discovered by this scan....only function. As previously stated, CCK is hard to come by so my technician gave me an Ensure to drink between tests. Here was my experience with this procedure.
The test is divided into two segments. Segment 1: I was asked to lie down while I was given an injection with the nuclear material. A machine (similiar to an MRI but does not engulf you) was placed over my chest and abdomen region. I had to lie still for an hour while my liver absorbed the nuclear material. A camera was taking pictures every minute.
Segment 2: After an hour, I was given an Ensure drink since we did not have any CCK and was told to lie back down on the table for another 30 minutes. During this 30 minutes, the machine is taking a picture of your gallbladder every minute to see if it contracts. At the end of the test, the techinician was kind enough to show me my results (65% function).
Hope you have a safe and productive procedure.