Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | Yes | N/A | Inspiration | Lung apices through the diaphragm to include both adrenal glands |
Arterial Phase | N/A | N/A | N/A | N/A |
Venous Phase | N/A | N/A | N/A | N/A |
Delayed Phase | N/A | N/A | N/A | N/A |
Scan Comments: A flash spiral mode can be used to improve scan speed and limit breathing artifact if the patient is short of breath. If IV contrast is warranted, venous phase imaging is routinely performed with a 40-60 second delay. All scans are performed using the ALARA principle. |
Technical Parameters | Parameters |
kVp | Care kV (ref. kV 120) |
Effective mAs | Use dose reduction software |
Care Dose Reference mAs | 150 |
Time (Rotation) | 0.5 sec |
Average Acquisition Time | 5-7 sec |
Collimation | 128 x 0.6mm |
Pitch Value | 1.0 |
Scan Direction | Craniocaudal |
Comments: Dose reduction software is used to reduce patient dose. 100 kVp can be used for most average size patients which will significantly reduce patient dose. |
Reconstruction Parameters | Soft Tissue | Thin Data | Lung | Hi Res |
Slice Thickness | 3 mm | 0.75 mm | 3 mm | 1 mm |
Reconstruction Spacing | 3 mm | 0.5 mm | 3 mm | 10 mm |
Reconstruction Algorithm | B30f | B20f | B80f | B80f |
Window Width and Level | 410/10 | 410/10 | 1600/-500 | 1600/-500 |
Reconstruction Comments: |
Reconstruction Parameters | Coronal | Sagittal | |
Slice Thickness | 3 mm | 3 mm | |
Reconstruction Spacing | 3 mm | 3 mm | |
Reconstruction Algorithm | B30f | B30f | |
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 | 2-3 mL/sec |
Oral Contrast | N/A |
Contrast Volume | N/A |
Comments:IV contrast is not routinely necessary, however, if warranted we use the above protocol. |