Specific Anatomic Region	Kidney
Application	Evaluate suspected renal artery stenosis
Author	Urban et al.
Reference Source	Radiographics 2001;21:373-386
Scanner Used	Siemens Somatom Plus 4
Injection Rate	3cc/sec
Contrast Volume and Type	100-120cc Omnipaque 350
Area Scanned	Through 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 Thickness	2-3mm
Table Speed/Pitch	4-6mm/sec
Reconstruction Interval	1mm
3D Technique Used	Volume rendering & MIP
Comment: 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.