Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | No | N/A | N/A | N/A |
Arterial Phase | No | N/A | N/A | N/A |
Venous Phase | Yes | 40 sec | inspiration | Lung apices through the diaphragm to include adrenal glands |
Delayed Phase | No | N/A | N/A | N/A |
Scan Comments: Venous phase imaging is routinely performed with a 40 sec delay. 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 | 150 |
Time (Rotation) | 0.5 sec |
Average Acquisition Time | 8-10 sec |
Collimation | 64 x 0.6mm |
Pitch Value | 0.8 |
Scan Direction | craniocaudal |
Comments: 100 kVp can be used for most average size patients which will significantly reduce patient dose. Dose reduction software is also used to limit patient exposure and maintain image quality. |
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: A high res recon can also be performed using a1mm x 10mm using a B80f kernel and a window of 1600 / -500. Coronal and sagittal MPRs are performed. |
Contrast Parameters | Parameters |
Contrast Type | Non ionic |
Contrast Volume | 100ml |
Saline Flush | N/A |
Injection Rate | 2-3ml / sec |
Oral Contrast | N/A |
Contrast Volume | N/A |
Comments: A fixed delay of 40 seconds is optimal. |
Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | No | N/A | N/A | N/A |
Arterial Phase | No | N/A | N/A | N/A |
Venous Phase | Yes | 40 sec | inspiration | Lung apices through the diaphragm to include adrenal glands |
Delayed Phase | No | N/A | N/A | N/A |
Scan Comments: Venous phase imaging is routinely performed with a 40 sec delay. 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 | 150 |
Time (Rotation) | 0.5 sec |
Average Acquisition Time | 8-10 sec |
Collimation | 64 x 0.6mm |
Pitch Value | 0.8 |
Scan Direction | craniocaudal |
Comments: 100 kVp can be used for most average size patients which will significantly reduce patient dose. Dose reduction software is also used to limit patient exposure and maintain image quality. |
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: A high res recon can also be performed using a1mm x 10mm using a B80f kernel and a window of 1600 / -500. Coronal and sagittal MPRs are performed. |
Contrast Parameters | Parameters |
Contrast Type | Non ionic |
Contrast Volume | 100ml |
Saline Flush | N/A |
Injection Rate | 2-3ml / sec |
Oral Contrast | N/A |
Contrast Volume | N/A |
Comments: A fixed delay of 40 seconds is optimal. |