Abdominal and pelvic CT scan is helpful in the diagnosis of nephrolithiasis. Findings on CT scan diagnostic of nephrolithiasis include radiopacity showing the location, density and composition of stones calcium oxalate +/- calcium phosphate: 400-600 HU, struvite (triple phosphate): usually opaque but variable, pure calcium phosphate 400-600 HU, uric acid: 100-200 HU and cystine: opaque.
Kidney stone CT
Kidney stone x ray
Kidney stone ultrasonography
Pyonephrosis CT
Pyonephrosis ultrasound
Pyelonephritis MRI
Hydronephrosis CT
Renal papillary necrosis CT