Is There a Role for Color Doppler Ultrasonography in Acute Cholecystitis

OBJECTIVE The aim of this study was to evaluate the utility of the Pulsatility Index (PI) of the right hepatic artery, measured by color Doppler sonography, in the diagnosis of acute cholecystitis. METHODS Seventy-five subjects were included in this study and divided into three groups, each consisting of 25 subjects: the cholecystitis group, the asymptomatic cholelithiasis group, and normal controls. Patients with acute cholecystitis fulfilled all the diagnostic criteria as stated in the latest Tokyo Guidelines. In all patients, the right hepatic artery was detected by color Doppler ultrasound and the PI was measured. RESULTS Patients with acute cholecystitis were found to have significantly higher PI values compared to both normal controls and cholelithiasis patients. Regression analysis revealed a significant positive correlation between the PI and the cholecystitis outcome. CONCLUSION Measurement of PI by color Doppler ultrasound represents a useful aid in the diagnostic process of acute cholecystitis. More studies are needed before this method is incorporated in the relevant guidelines.