Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | Yes | N/A | inspiration | Nasopharynx through the diaphragm |
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: All Scans are performed using the ALARA principle. |
Technical Parameters | Parameters |
kVp | 100 or 120 |
Effective mAs | Use dose reduction software |
Care Dose Reference mAs | 200 |
Time (Rotation) | 0.5 sec |
Average Acquisition Time | 8-10 sec |
Collimation | 64 x 0.6mm |
Pitch Value | 0.8 |
Scan Direction | craniocaudal |
Comments: Using dose reduction software will eliminate image noise especially in the shoulder region. 100kVp can be used on average size patients. |
Reconstruction Parameters | Soft Tissue | Thin Data | Lung |
Slice Thickness | 3mm | 0.75mm | 3mm |
Reconstruction Spacing | 3mm | 0.5mm | 3mm |
Reconstruction Algorithm | B30f | B20f | B80f |
Window Width and Level | 410 / 10 | 410 / 10 | 1600 / -500 |
Reconstruction Comments: Coronal and sagittal recons are performed aligned to the patient's trachea. |
Contrast Parameters | Parameters |
Contrast Type | N/A |
Contrast Volume | N/A |
Saline Flush | N/A |
Injection Rate | N/A |
Oral Contrast | N/A |
Contrast Volume | N/A |
Comments: IV Contrast is not routinely necessary for this study. |