A comparison of the Accuracy of Ultrasound and Computed Tomography in common diagnoses causing acute abdominal painReport as inadecuate




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European Radiology

, Volume 21, Issue 7, pp 1535–1545

First Online: 02 March 2011Received: 09 September 2010Revised: 06 December 2010Accepted: 15 December 2010

Abstract

ObjectivesHead-to-head comparison of ultrasound and CT accuracy in common diagnoses causing acute abdominal pain.

Materials and methodsConsecutive patients with abdominal pain for >2 h and <5 days referred for imaging underwent both US and CT by different radiologists-radiological residents. An expert panel assigned a final diagnosis. Ultrasound and CT sensitivity and predictive values were calculated for frequent final diagnoses. Effect of patient characteristics and observer experience on ultrasound sensitivity was studied.

ResultsFrequent final diagnoses in the 1,021 patients mean age 47; 55% female were appendicitis 284; 28%, diverticulitis 118; 12% and cholecystitis 52; 5%. The sensitivity of CT in detecting appendicitis and diverticulitis was significantly higher than that of ultrasound: 94% versus 76% p < 0.01 and 81% versus 61% p = 0.048, respectively. For cholecystitis, the sensitivity of both was 73% p = 1.00. Positive predictive values did not differ significantly between ultrasound and CT for these conditions. Ultrasound sensitivity in detecting appendicitis and diverticulitis was not significantly negatively affected by patient characteristics or reader experience.

ConclusionCT misses fewer cases than ultrasound, but both ultrasound and CT can reliably detect common diagnoses causing acute abdominal pain. Ultrasound sensitivity was largely not influenced by patient characteristics and reader experience.

KeywordsAcute abdominal pain Computed tomography Ultrasound Appendicitis Emergency Department Study group members are listed in the appendix I

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Author: Adrienne van Randen - Wytze Laméris - H. Wouter van Es - Hans P. M. van Heesewijk - Bert van Ramshorst - Wim ten Ho

Source: https://link.springer.com/







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