Acute cholecystitis: diagnosis with radionuclide angiography

Area of Science:

• Nuclear Medicine
• Gastroenterology
• Diagnostic Imaging

Background:

• Acute cholecystitis diagnosis relies on clinical, laboratory, and imaging findings.
• Cholescintigraphy is a standard imaging modality, but its accuracy can be limited in certain cases.

Purpose of the Study:

• To evaluate the diagnostic performance of radionuclide angiography compared to cholescintigraphy for acute cholecystitis.
• To assess the ability of radionuclide angiography to predict the severity of acute cholecystitis.

Main Methods:

• Radionuclide angiography and cholescintigraphy using technetium-99m disofenin were performed in 65 patients with suspected acute cholecystitis.
• Surgical confirmation served as the gold standard for diagnosis.

Main Results:

• Radionuclide angiography demonstrated a positive predictive value of 92% for acute cholecystitis.
• Sensitivity and specificity for radionuclide angiography were 72% and 94%, respectively, compared to cholescintigraphy.
• Positive radionuclide angiograms correlated with more severe forms of acute cholecystitis, including transmural inflammation, gangrene, and abscess.

Conclusions:

• Radionuclide angiography is a valuable tool for diagnosing acute cholecystitis with high accuracy.
• The technique shows promise in predicting disease severity and may optimize imaging protocols by potentially obviating delayed cholescintiscans.