Specific Anatomic Region | Kidney |
Application | Hematuria |
Author | Yuh BI and Cohan RH |
Reference Source | Semin Ultrasound CT MR 1997; 18(2):82-90 |
Scanner Used | GE Advantage |
Injection Rate | See comment (below) for precontrast study1-3ml/sec, although 2.5cc is common |
Contrast Volume and Type | 100-150ml of 60% nonionic contrast |
Area Scanned | Entire kidneys |
Scan Delay (2 delays if dual spiral) | 40sec for cortical phase100sec for nephrographic phase |
Length of Spiral (time) | 30-40sec |
Slice Thickness | 5mm |
Table Speed/Pitch | 5mm/sec |
Reconstruction Interval | 5mm (1.5-3mm for masses less than 10mm) |
3D Technique Used | None |
Comment: The study first requires 5mm collimation and a spiral scan with 1:1 pitch without contrast. A contrast injection is then given. Occasionally excretory-phase images at 3-10min are also obtained. The authors reserve cortical-phase images for cases where information regarding renal vessels is needed. We will in cases of hematuria also do noncontrast scans at 5mm through the kidneys only. |