Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

N/A

N/A

N/A

N/A

Arterial Phase

Yes

Bolus triggered

Inspiration

Entire lower extremity vasculature of affected area

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. 3D post-processing is performed with this protocol.

Technical Parameters

Parameters

kVp

120

Effective mAs

Use dose reduction software

Quality Reference mAs

250

Time (Rotation)

0.5 sec

Average Acquisition Time

16-18 sec

Collimation

128 x 0.6mm

Pitch Value

0.8

Scan Direction

Craniocaudal

Comments: Dose reduction software is used to reduce patient dose.

Reconstruction Parameters

Soft Tissue

Bone

Thin Data

Coronal

Slice Thickness

 3 mm

5 mm

 0.75 mm

3 mm

Reconstruction Spacing

 3 mm

5 mm

 0.5 mm

3 mm

Reconstruction Algorithm

B30f

B70f

B20f

B30f

Window Width and Level

410/10

1776/176

410/10

410/10

Reconstruction Comments: Thin slice bone reconstructions (B70f) are performed when fracture is suspected. 3D VRT and MIP images are also performed.

Reconstruction Parameters

Sagittal

Slice Thickness

 3 mm

Reconstruction Spacing

 3 mm

Reconstruction Algorithm

B30f

Window Width and Level

410/10

Reconstruction Comments: Thin slice bone reconstructions (B70f) are performed when fracture is suspected. 3D VRT and MIP images are also performed.

Contrast Parameters

Parameters

Contrast Type

Non-ionic

Contrast Volume

120 mL

Saline Flush

N/A

Injection Rate

4-5 mL/sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments: Bolus tracking is performed off the abdominal aorta using a 230 HU trigger setting.