Specific Anatomic RegionKidney
ApplicationStage known renal mass
AuthorSmith PA, et al.
Reference SourceSpiral computed tomography evaluation of the kidneys: state of the art. Urology. 1998 Jan; 51(1): 3-11.
Scanner UsedSiemens Somatom Plus-4
Injection Rate3ml/sec
Contrast Volume and Type120ml of Omnipaque-350
Area ScannedArterial phase (AP):2cm above and below kidney. Delayed phase (DP):from diaphragm to symphysis
Scan Delay30sec, 70sec (dual spiral)
Length of Spiral (time)Usually 30sec for arterial and 40sec for delayed phase
Slice Thickness3mm (AP)5mm (DP)
Table Speed/Pitch5mm/sec (AP)8mm/sec (DP)
Reconstruction Interval3mm (AP)5mm (DP)
3D Technique UsedVolume rendering on arterial phase
Comment: The dual-phase technique provides information that may allow a partial nephrectomy or a more limited approach. Additional images in the excretory phase (>3min) may be helpful especially in cases of possible transitional-cell cancer.