A comparison of the accuracy of ultrasound and computed tomography in common diagnoses causing acute XXXX .

@entity1 @entity698 @entity2679 @entity490 @entity4436
OBJECTIVES: Head-to-head comparison of ultrasound and CT accuracy in common diagnoses causing acute @entity490 . MATERIALS AND METHODS: Consecutive @entity1 with @entity490 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 @entity1 characteristics and observer experience on ultrasound sensitivity was studied. RESULTS: Frequent final diagnoses in the 1,021 @entity1 (mean age 47; 55% female) were @entity698 (284; 28%), @entity4436 (118; 12%) and @entity2679 (52; 5%). The sensitivity of CT in detecting @entity698 and @entity4436 was significantly higher than that of ultrasound: 94% versus 76% (p   <   0.01) and 81% versus 61% (p   =   0.048), respectively. For @entity2679 , 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 @entity698 and @entity4436 was not significantly negatively affected by @entity1 characteristics or reader experience. CONCLUSION: CT misses fewer cases than ultrasound, but both ultrasound and CT can reliably detect common diagnoses causing acute @entity490 . Ultrasound sensitivity was largely not influenced by @entity1 characteristics and reader experience.
