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Revisiting morphine-augmented hepatobiliary imaging for diagnosing acute cholecystitis: the potential pitfall of high

Bor-Tau Hung1, Katie S Traylor, Ching-yee Oliver Wong

  • 1Department of Nuclear Medicine, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan, bortau@adm.cgmh.org.tw.

Abdominal Imaging
|January 10, 2014
PubMed
Abstract

Insights

Morphine-augmented hepatobiliary imaging (MAHBI) shows high sensitivity for diagnosing acute cholecystitis (AC). However, its low specificity due to a high false positive rate necessitates correlation with other clinical findings for accurate diagnosis.

Area of Science:

  • Radiology
  • Gastroenterology
  • Diagnostic Imaging

Background:

  • Acute cholecystitis (AC) is a common surgical emergency.
  • Hepatobiliary imaging is a key diagnostic tool for AC.
  • Morphine-augmented hepatobiliary imaging (MAHBI) aims to improve diagnostic accuracy.

Purpose of the Study:

  • To evaluate the diagnostic efficacy of MAHBI in patients suspected of acute cholecystitis.
  • To determine the sensitivity, specificity, and predictive values of MAHBI for AC diagnosis.

Main Methods:

  • A retrospective study involving 68 patients with suspected AC.
  • MAHBI was performed 30 minutes after standard 1-hour imaging.
  • Gallbladder non-visualization on post-morphine images was considered positive; pathological examination served as the gold standard.

Main Results:

  • MAHBI demonstrated 100% sensitivity and 100% negative predictive value for AC.
  • However, specificity was only 17%, with a high false positive rate of 83%.
  • Overall accuracy was 72%.

Conclusions:

  • MAHBI is a highly sensitive imaging technique for detecting acute cholecystitis.
  • The high false positive rate limits its specificity, potentially leading to misdiagnosis.
  • Clinical correlation with other findings is crucial for optimal patient management.

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