May 31 2008
Benefits of a Gallbladder Scan
A gallbladder scan is usually requested when the patient is showing signs and symptoms of having gallbladder dysfunction. It can be used to tell the cause of any jaundice the patient is exhibiting, to determine if there is a problem with the function of the gallbladder and the source of any right side pain, or to detect any blockage of the tubes.
During the test a radioactive tracer fluid will be injected into a vein, usually in the arm. This is so that the scanning pictures can show the path of the tracer going to the liver, the gallbladder, bile ducts, and the duodenum. This can show the radiologist if there is any dysfunction to the gallbladder itself in function or structure, and if there is a blockage in any of the bile duct tubes that lead from the liver to the gallbladder.
After the tracer has ran its course then the cholecystokinin (the substance that will make the gallbladder be stimulated, some say like after a particularly fatty meal) will be injected. Pictures will be taken to see how well the gallbladder is functioning. The results are generally given in a percentage, as in the percentage of solution that is released in the time given. Most doctors feel that anything below 35%-40% is a sign of gallbladder dysfunction, with 70%-75% being normal. If your scan comes back with these numbers, your doctor may be opting for a surgical removal of the gallbladder. They may take additional pictures later, or they may just go with the first set of data they collect. This is usually up to the doctor.
The test is a little time consuming, taking about two hours. And it’s restrictive. You will be lying on a table the entire time, and told not to move much during it. Much like a two hour MRI of sorts.
The test is generally pain free, although a bit uncomfortable. You may request a pillow or blanket if it will make you more comfortable. When the cholecystokinin (or CCK as it is known) is administered you may feel pain. Usually having pain with the CCK injection is a sign of gallbladder dysfunction and if you do hurt during this it is important to tell your radiologist.
If you are experiencing right side pain with nausea and diarrhea after fatty meals, your doctor may tell you to take this test. It is very useful in determining gallbladder function and shouldn’t be put off if you are experiencing any gastrointestinal issues. You can also see about a gallbladder ultrasound, if you would like to get a “second opinion” on whether you need the actual gallbladder scan or not.
