Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

Inspiration

Lung apices through bottom of mandible

Arterial Phase

Yes

25 sec.

Inspiration

Carina through occlusal plane

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

120

Effective mAs

Use dose reduction software

Quality Reference mAs

200

Time (Rotation)

0.5 sec

Average Acquisition Time

5-7 sec

Collimation

128 x 0.6mm

Pitch Value

0.8

Scan Direction

Caudocranial

Comments: Dose reduction software is used to reduce patient dose and improve image quality, specifically in the shoulder region.

Reconstruction Parameters

Soft Tissue

Bone

Thin Data

Coronal

Slice Thickness

 3 mm

3 mm

 0.75 mm

3 mm

Reconstruction Spacing

 3 mm

3 mm

 0.5 mm

3 mm

Reconstruction Algorithm

B30f

B60f

B20f

B30f

Window Width and Level

350/50

2500/500

350/50

350/50

Reconstruction Comments: Coronal, sagittal, 45 degree right oblique, and 45 degree left oblique image reconstructions are also performed.

Reconstruction Parameters

Sagittal

Oblique (R)

Oblique (L)

Slice Thickness

 3 mm

3 mm

3 mm

Reconstruction Spacing

 3 mm

3 mm

3 mm

Reconstruction Algorithm

B30f

B30f

B30f

Window Width and Level

350/50

350/50

350/50

Reconstruction Comments: Coronal, sagittal, 45 degree right oblique, and 45 degree left oblique image reconstructions are also performed.

Contrast Parameters

Parameters

Contrast Type

Non-ionic

Contrast Volume

80 mL

Saline Flush

30 mL

Injection Rate

5 mL/sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments: Preferably, we will inject the right arm to limit contrast artifact.