The best radiologic modality to diagnose gallbladder stones is:
- Computed tomography (CT)
- Ultrasonography
- HIDA scan (technetium 99–labeled iminodiacetic acid)
- Percutaneous transhepatic cholangiography (PTC)
- Kidney-ureter-bladder (KUB) radiograph
Ultrasound is quick, non-invasive and has a 88% sensitiviy for the detection of galltones. It is generally the first modality used to evaluate cholelithiasis. HIDA scans are helpful for determining acute cholecystitis. PTC is used to visualize the intrahepatic and extrahepatic biliary tree. CT is useful in the evaluation of the acute abdomen, providing excellent visualization of the pancreas, mesentery, liver, retroperitoneum, and gallbladder. Although CT will allow excellent visualization of the gallbladder wall, its sensitivity for the detection of gallstones is poor. However, its detection of renal stones is more accurate than renal ultrasonography.
No comments:
Post a Comment