Specific Anatomic RegionKidney
ApplicationEvaluate suspected renal artery stenosis
AuthorUrban et al.
Reference SourceRadiographics 2001;21:373-386
Scanner UsedSiemens Somatom Plus 4
Injection Rate3cc/sec
Contrast Volume and Type100-120cc Omnipaque 350
Area ScannedThrough regions of renal arteries
Scan Delay (2 delays if dual spiral)25-30 sec and 3 minutes
Length of Spiral (time)20-30sec each
Slice Thickness2-3mm
Table Speed/Pitch4-6mm/sec
Reconstruction Interval1mm
3D Technique UsedVolume rendering & MIP
  • Non contrast CTs are first obtained to localize the renal arteries for the CT angiogram. This allows a smaller scan volume which is critical with SDCT and the use of 1-2mm collimation.
  • 3D with VRT is accurate to quantify stenosis.