CT urography is helpful in the diagnosis of<unk> hat shows multiple small accumulations of contrast media in the<unk>  regions near the calyx system.
Renal papillary necrosis CT
Renal papillary necrosis MRI
Analgesic nephropathy x-ray
Renal infarct CT
Renal amyloidosis CT
Renal artery stenosis CT
Analgesic nephropathy CT
Kidney stone CT