Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

Inspiration

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: IV contrast may be useful if a soft tissue mass is being evaluated. All scans are performed using the ALARA principle.

 

Technical Parameters

Parameters

kVp

120

Effective mAs

CareDose

Care Dose Reference mAs

185

Time (Rotation)

0.5 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

 I40f

 I70f

 I70f

Window Width and Level

 140/10

1776/176

 1776/176

Reconstruction Comments: Additionally, a soft tissue thin data set is performed using 0.75 mm x 0.5 mm slices, an I30f 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

80-120 mL

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.