Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | N/A | N/A | N/A | N/A |
Arterial Phase | N/A | N/A | N/A | N/A |
Venous Phase | Yes | 40 sec | N/A | Base of skull through apex |
Delayed Phase | N/A | N/A | N/A | N/A |
Scan Comments: If a bleed is suspected non contrast images should be obtained prior to CTV | ||||
Technical Parameters | Parameters |
kVp | 120 |
Effective mAs | 400 |
Care Dose Reference mAs | N/A |
Time (Rotation) | 1.0 sec |
Average Acquisition Time | 29 sec |
Collimation | 64 x 0.6mm |
Pitch Value | 0.55 |
Scan Direction | craniocaudal |
Comments: Decreasing the rotation time or increasing the pitch will allow for faster scan times when patient motion is a concern. | |
Reconstruction Parameters | Soft Tissue | Thin Data | Bone |
Slice Thickness | 5mm | 0.75mm | 5mm |
Reconstruction Spacing | 5mm | 0.5mm | 5mm |
Reconstruction Algorithm | H30 | H20 | H60 |
Window Width and Level | 100 / 30 | 100 / 30 | 2500 / 500 |
Reconstruction Comments: 3D MPRs can be performed to correct positioning. | |||
Contrast Parameters | Parameters |
Contrast Type | Non ionic |
Contrast Volume | 100 ml |
Saline Flush | N/A |
Injection Rate | 3-4ml / 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 | N/A | N/A | N/A | N/A |
Arterial Phase | N/A | N/A | N/A | N/A |
Venous Phase | Yes | 40 sec | N/A | Base of skull through apex |
Delayed Phase | N/A | N/A | N/A | N/A |
Scan Comments: If a bleed is suspected non contrast images should be obtained prior to CTV | ||||
Technical Parameters | Parameters |
kVp | 120 |
Effective mAs | 400 |
Care Dose Reference mAs | N/A |
Time (Rotation) | 1.0 sec |
Average Acquisition Time | 29 sec |
Collimation | 64 x 0.6mm |
Pitch Value | 0.55 |
Scan Direction | craniocaudal |
Comments: Decreasing the rotation time or increasing the pitch will allow for faster scan times when patient motion is a concern. | |
Reconstruction Parameters | Soft Tissue | Thin Data | Bone |
Slice Thickness | 5mm | 0.75mm | 5mm |
Reconstruction Spacing | 5mm | 0.5mm | 5mm |
Reconstruction Algorithm | H30 | H20 | H60 |
Window Width and Level | 100 / 30 | 100 / 30 | 2500 / 500 |
Reconstruction Comments: 3D MPRs can be performed to correct positioning. | |||
Contrast Parameters | Parameters |
Contrast Type | Non ionic |
Contrast Volume | 100 ml |
Saline Flush | N/A |
Injection Rate | 3-4ml / sec |
Oral Contrast | N/A |
Contrast Volume | N/A |
Comments: A fixed delay of 40 seconds is optimal. | |