Specific Anatomic Region | Kidney | ||||
Application | Suspected renal mass | ||||
Author | Elliot K. Fishman, MD | ||||
Reference Source | JHU protocol | ||||
Scanner Used | Siemens Somatom Sensation 16 | ||||
KV / Effective mAs / Rotation time (sec) | NONCONTRAST 120 / 200/ 0.5 | ARTERIAL 120 / 200 / 0.5 | VENOUS 120 / 200 / 0.5 | DELAYS 120 / 200 / 0.5 | |
Detector Collimation (mm) | 0.75 | 0.75 | 0.75 | 0.75 | |
Slice Thickness (mm) | 0.75 | 0.75 | 0.75 | 0.75 | |
Feed / Rotation (mm) | 12.0 | 12.0 | 12.0 | 12.0 | |
Kernel | B30f | B30 | B30 | B30 | |
Increment (mm) | 5.0 | 0.5 | 0.5 | 0.5 | |
Image Order | cr-ca | ||||
Oral Contrast | 1000 cc water over 20 minutes | ||||
IV Contrast Volume and Type | 100-120 cc of Omnipaque 350 | ||||
Injection Rate | 3-4 cc/sec | ||||
Scan Delay (sec) | 25 sec arterial / 50-55 sec venous / 240 sec excretory phase | ||||
3D Technique Used | VRT w/ supplemental MIP using InSpace | ||||
Comment: - Some people use 4 phases although we tend to use 3 phases to try to reduce the patient dose. In cases where the clinical question is simply to stage a tumor the noncontrast scans can be eliminated. Use InSpace preset for CT urography. We use a 4 minute delay for CT urography. Filming: Recon- Both art. / delays by 5x5 for filming Recon lung / liver by 5x5 for filming. |