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Morphine-augmented cholescintigraphy: its efficacy in detecting acute cholecystitis.
D Fink-Bennett1, H Balon, T Robbins
1Department of Nuclear Medicine, William Beaumont Hospital, Royal Oak, Michigan 48073.
Summary
Morphine-augmented cholescintigraphy accurately detects acute cholecystitis. This imaging technique offers high sensitivity and specificity, providing a reliable diagnosis in 1.5 hours.
Area of Science:
- Nuclear Medicine
- Diagnostic Imaging
Background:
- Acute cholecystitis diagnosis can be challenging.
- Conventional hepatobiliary scintigraphy is a standard diagnostic tool.
Purpose of the Study:
- To evaluate the accuracy of morphine-augmented cholescintigraphy for diagnosing acute cholecystitis.
- To compare its diagnostic performance with conventional methods.
Main Methods:
- 158 patients with suspected acute cholecystitis underwent 99mTc-labeled iminodiacetic acid (IDA) scintigraphy.
- Morphine sulfate was administered intravenously to nonvisualized gallbladders at 40-60 minutes if radiotracer was in the small bowel.
- Acute cholecystitis was confirmed by nonvisualization 30 minutes post-morphine.
Main Results:
- The study achieved a sensitivity of 94.6% and specificity of 99.1% for detecting acute cholecystitis.
- Positive and negative predictive values were 97.2% and 98.3%, respectively.
- Diagnosis was established within 1.5 hours.
Conclusions:
- Morphine-augmented cholescintigraphy is a highly accurate method for diagnosing acute cholecystitis.
- It demonstrates comparable accuracy to conventional hepatobiliary scintigraphy.
- This technique offers a faster diagnostic pathway.