Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

N/A

Limited to area of interest

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

120

Effective mAs

CareDose

Care Dose Reference mAs

175

Time (Rotation)

1.0 sec

Average Acquisition Time

10 sec

Collimation

128 x 0.6mm

Pitch Value

0.8

Scan Direction

Craniocaudal

Comments: CareDose is used to limit patient dose.

 

Reconstruction Parameters

Bone

Thin Data

Soft Tissue

Slice Thickness

 3mm

 0.75mm

 3mm

Reconstruction Spacing

 3mm

 0.5mm

 3mm

Reconstruction Algorithm

 I70h

 I70h

 I40s

Window Width and Level

 1776/176

1776/176

 410/10

Reconstruction Comments: Additionally, a soft tissue thin data set is also performed using 0.75mm x 0.5mm slices with an I30s algorithm. Multiplanar and 3D reconstructions (VRT) are performed in these cases.

 

Contrast Parameters

Parameters

Contrast Type

Non ionic

Contrast Volume

80ml

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.