Kidney

Stage known mass

Specific Anatomic Region

Kidney

Application

Stage known renal mass

Author

Smith PA, et al.

Reference Source

Spiral computed tomography evaluation of the kidneys: state of the art. Urology. 1998 Jan; 51(1): 3-11.

Scanner Used

Siemens Somatom Plus-4

Injection Rate

3ml/sec

Contrast Volume and Type

120ml of Omnipaque-350

Area Scanned

Arterial phase (AP):2cm above and below kidney. Delayed phase (DP):from diaphragm to symphysis

Scan Delay

30sec, 70sec (dual spiral)

Length of Spiral (time)

Usually 30sec for arterial and 40sec for delayed phase

Slice Thickness

3mm (AP)5mm (DP)

Table Speed/Pitch

5mm/sec (AP)8mm/sec (DP)

Reconstruction Interval

3mm (AP)5mm (DP)

3D Technique Used

Volume 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.