Following are the sign/s suggestive of obstruction of urinary tract on CT Scan
Ans. is 'd' i.e., All the above CT Scan in Urolithiasis* Nonenhanced CT has been accepted as the imaging modality of choice in the radiologic evaluation of patients suspected of having urolithiasis.* CT is superior to other imaging modalities in the diagnostic accuracy and assessment of their characteristics.* The most direct sign of ureterolithiasis is the stone within the ureteral lumen, with proximal ureteral dilatation and normal distal caliber.* Other favorable secondary signs at CT are: Hydroureter, hydronephrosis, perinephric stranding, periureteral edema and unilateral renal enlargement.* Less reliable findings include unilateral absence of the white renal pyramid, thickening of the lateroconal fascia, and perinephric edema.* Differences in the renal parenchymal attenuation between obstructed and nonobstructed kidneys have also be used as the secondary sign of obstruction.
Hyroureter
Perinephric stranding
Thickening of the lateroconal fascia
All the above
Urinary Tract