What is a HIDA Scan with CCK Stimulation?
A HIDA scan with CCK stimulation is a specialized nuclear medicine procedure used to evaluate the function of the gallbladder and biliary system. It involves the injection of a radioactive tracer and a cholecystokinin (CCK) hormone to assess the gallbladder’s ability to contract and empty bile into the small intestine. This test is commonly performed to diagnose gallbladder disorders, such as gallstones, inflammation, or dysfunction.
The gallbladder is a small, pear-shaped organ located beneath the liver. Its primary function is to store and concentrate bile, a substance produced by the liver that aids in the digestion and absorption of fats. Bile is released into the small intestine when needed to break down fats during digestion.
During a HIDA scan with CCK stimulation, a small amount of a radioactive tracer called technetium-99m hexamethylpropylene amine oxime (Tc-99m HMPAO) is injected into the patient’s bloodstream. This tracer travels to the gallbladder and biliary system, where it emits gamma radiation that can be detected by a gamma camera.
The CCK hormone is then administered to stimulate the gallbladder to contract and release bile. This hormone is naturally produced in the body and plays a crucial role in the regulation of gallbladder contraction. The CCK stimulation helps to assess the gallbladder’s response to the hormone and its ability to empty bile.
The patient lies on a bed inside a scanner, which rotates around the body to capture images of the gallbladder and biliary system. The gamma camera detects the gamma radiation emitted by the radioactive tracer and creates detailed images of the organ’s structure and function.
The procedure is generally safe and well-tolerated, with minimal side effects. However, it is important to inform the healthcare provider about any allergies or medical conditions before undergoing the test.
The results of a HIDA scan with CCK stimulation can help diagnose various gallbladder disorders, including:
1. Gallstones: HIDA scans can detect gallstones by showing a lack of gallbladder contraction and bile emptying.
2. Cholecystitis: This condition involves inflammation of the gallbladder, which can be identified through abnormal gallbladder function.
3. Biliary atresia: A rare condition where the bile ducts are blocked, causing bile to accumulate in the liver.
4. Biliary stricture: A narrowing of the bile ducts that can lead to impaired bile flow.
5. Cholangitis: Inflammation of the bile ducts, which can be detected through abnormal gallbladder function.
In conclusion, a HIDA scan with CCK stimulation is a valuable diagnostic tool for evaluating gallbladder function and diagnosing various gallbladder disorders. By providing detailed information about the organ’s structure and function, this test helps healthcare providers make informed decisions about treatment options.
