Quote:
Originally Posted by Monticore
I can usually see stones at the UVJ or anywhere along the tract and size will probably determine is it needs i intervention , CT might be better To R/O septic stones as U/S isn’t great for acute pyelo.
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I never see US used for stones unless the patient is pregnant or Low Dose CT is not available
This is from Uptodate
Ultrasound is less accurate and demonstrates greater variability than CT of the abdomen and pelvis without contrast for the diagnosis of nephrolithiasis (image 4). Pooled sensitivity and specificity of ultrasound is 0.70 (95% CI 0.67-0.73) and 0.75 (95% CI 0.73-0.78), respectively [40]. Because CT detects nephrolithiasis not diagnosed with ultrasound, a CT is sometimes performed after a negative ultrasound to evaluate for a stone if the index of clinical suspicion remains high. Ultrasound is less accurate than CT at measuring stone size, stone number, and defining ureteral location. Thus, a positive ultrasound may lead to a follow-up CT to enable treatment planning.