Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

Inspiration

To include the clavicle through entire scapula

Arterial Phase

N/A

N/A

N/A

N/A

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. IV contrast may be useful if a soft tissue mass or abscess is being evaluated.

 

Technical Parameters

Parameters

kVp

Care kV (ref. kV 120)

Effective mAs

CareDose

Care Dose Reference mAs

175

Time (Rotation)

1.0 sec

Average Acquisition Time

5-7 sec

Collimation

128 x 0.6mm

Pitch Value

0.8

Scan Direction

Craniocaudal

Comments: CareDose is used to both limit patient exposure and provide consistent image quality and noise levels.

 

Reconstruction Parameters

Bone

Thin Data

Soft Tissue

Slice Thickness

 3mm

 0.75mm

 3mm

Reconstruction Spacing

 3mm

 0.5mm

 3mm

Reconstruction Algorithm

 B30s

 B60s

 B70s

Window Width and Level

410/10

1776/176

 1776/176

Reconstruction Comments: Additionally, a soft tissue thin data set is performed using 0.75 mm x 0.5 mm slices, a B20s algorithm, and a window width and level of 410/10. Coronal and sagittal image reconstructions are also performed. 3D VRT reconstructions are also performed.

 

Contrast Parameters

Parameters

Contrast Type

Non ionic

Contrast Volume

120ml

Saline Flush

N/A

Injection Rate

2-3ml/sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments: IV contrast is not routinely necessary, however, if warranted we use the above protocol.