Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | N/A | N/A | N/A | N/A |
Arterial Phase | Yes | Bolus Trigger | N/A | Base of skull through apex |
Venous Phase | N/A | N/A | N/A | N/A |
Delayed Phase | N/A | N/A | N/A | N/A |
Scan Comments: Non contrast images are performed when indicated prior to CTA. All scans are performed using the ALARA principle. | ||||
Technical Parameters | Parameters |
kVp | 120 |
Effective mAs | 400 |
Time (Rotation) | 0.33 sec |
Average Acquisition Time | 8-10 sec |
Collimation | 64 x 0.6mm |
Pitch Value | 0.6 |
Scan Direction | caudocranial |
Comments: Isocentering the patient within the gantry is key to image quality. | |
Reconstruction Parameters | Soft Tissue | Thin Data | Bone |
Slice Thickness | 5mm | 0.75mm | 5mm |
Reconstruction Spacing | 5mm | 0.5mm | 5mm |
Reconstruction Algorithm | B30 | B20 | B70 |
Window Width and Level | 350 / 50 | 350 / 50 | 2500 / 500 |
Reconstruction Comments: Coronal and sagittal MPRs are performed. Additional radial MIP and VRT images are also performed. | |||
Contrast Parameters | Parameters |
Contrast Type | Non ionic |
Contrast Volume | 100 ml |
Saline Flush | N/A |
Injection Rate | 4-6 |
Oral Contrast | N/A |
Contrast Volume | N/A |
Comments: Bolus tracking is performed on the aortic arch using a 25 HU trigger. | |
Acquisition Phase | Phase Included | Scan Delay | Respiration Phase | Anatomical Coverage |
Non Contrast | N/A | N/A | N/A | N/A |
Arterial Phase | Yes | Bolus Trigger | N/A | Base of skull through apex |
Venous Phase | N/A | N/A | N/A | N/A |
Delayed Phase | N/A | N/A | N/A | N/A |
Scan Comments: Non contrast images are performed when indicated prior to CTA. All scans are performed using the ALARA principle. | ||||
Technical Parameters | Parameters |
kVp | 120 |
Effective mAs | 400 |
Time (Rotation) | 0.33 sec |
Average Acquisition Time | 8-10 sec |
Collimation | 64 x 0.6mm |
Pitch Value | 0.6 |
Scan Direction | caudocranial |
Comments: Isocentering the patient within the gantry is key to image quality. | |
Reconstruction Parameters | Soft Tissue | Thin Data | Bone |
Slice Thickness | 5mm | 0.75mm | 5mm |
Reconstruction Spacing | 5mm | 0.5mm | 5mm |
Reconstruction Algorithm | B30 | B20 | B70 |
Window Width and Level | 350 / 50 | 350 / 50 | 2500 / 500 |
Reconstruction Comments: Coronal and sagittal MPRs are performed. Additional radial MIP and VRT images are also performed. | |||
Contrast Parameters | Parameters |
Contrast Type | Non ionic |
Contrast Volume | 100 ml |
Saline Flush | N/A |
Injection Rate | 4-6 |
Oral Contrast | N/A |
Contrast Volume | N/A |
Comments: Bolus tracking is performed on the aortic arch using a 25 HU trigger. | |