Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | Yes | N/A | Inspiration | kidneys only |
Arterial Phase | Yes | Bolus triggered | Inspiration | diaphragm through pubic symphysis |
Venous Phase | Yes | 60 sec | Inspiration | diaphragm through iliac crest |
Delayed Phase | Yes | 5-7 min | Inspiration | kidneys through bladder |
Scan Comments: Scan ranges are limited to a specific area of interest to avoid unnecessary patient dose. For young patients, the arterial phase images can be limited to only include both kidneys and the venous phase images can be eliminated. All scans are performed using the ALARA principle. 3D post-processing is performed with this protocol. |
Technical Parameters | Parameters |
kVp | 120 |
Effective mAs | Use dose reduction software |
Quality Reference mAs | 290 |
Time (Rotation) | 0.5 sec |
Average Acquisition Time | 5-7 sec |
Collimation | 128 x 0.6mm |
Pitch Value | 0.6 |
Scan Direction | Craniocaudal |
Comments: Dose reduction software is used to reduce patient dose. The quality reference mAs can be lowered on non-contrast and delayed images (250 mAs). |
Reconstruction Parameters | Soft Tissue | Thin Data | Thin Data | Lung |
Slice Thickness | 3 mm | 0.75 mm | 0.75 mm | 3 mm |
Reconstruction Spacing | 3 mm | 0.5 mm | 0.5 mm | 3 mm |
Reconstruction Algorithm | I40f (2) | I26f (2) | B20f | I70f (2) |
Window Width and Level | 410/10 | 410/10 | 410/10 | 1600/-500 |
Reconstruction Comments: |
Reconstruction Parameters | Coronal | Sagittal |
Slice Thickness | 3 mm | 3 mm |
Reconstruction Spacing | 3 mm | 3 mm |
Reconstruction Algorithm | I40f (2) | I40f (2) |
Window Width and Level | 410/10 | 410/10 |
Reconstruction Comments: |
Contrast Parameters | Parameters |
Contrast Type | Non-ionic |
Contrast Volume | 120 mL |
Saline Flush | N/A |
Injection Rate | 4-5 mL/sec |
Oral Contrast | H2O |
Contrast Volume | 1000 mL |
Comments: Bolus tracking is performed off the abdominal aorta using a 230 HU trigger setting. |