Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

Inspiration

Limited to region 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 can be useful to evaluate swelling or abscess. All scans are performed using the ALARA principle. 3D post-processing is performed with this protocol.

 

Technical Parameters

Parameters

kVp

140 / 80

Effective mAs

CareDose

Quality Reference mAs

60 / 255

Time (Rotation)

1.0 sec

Average Acquisition Time

20-22 sec

Collimation

40 x 0.6mm

Pitch Value

0.7

Scan Direction

Craniocaudal

Comments: Images are acquired using 80/140 kVp setting with a Sn filter. CareDose is used to reduce patient dose. The pitch value should remain below 1.0 to reduce any artifacts during post-processing.

 

Reconstruction Parameters

Soft Tissue

Bone

Thin Data

Thin Data

Slice Thickness

 3 mm

3 mm

 0.75 mm

0.75 mm

Reconstruction Spacing

 3 mm

3 mm

 0.5 mm

0.5 mm

Reconstruction Algorithm

I40s

I70h

I30s

I70h

Window Width and Level

410/10

1776/176

410/10

1776/176

Reconstruction Comments: When generating mixed images, the DE composition is set to 0.3.

 

Reconstruction Parameters

Coronal

Sagittal

Coronal

Sagittal

Slice Thickness

 3 mm

3 mm

3 mm

3 mm

Reconstruction Spacing

 3 mm

3 mm

3 mm

3 mm

Reconstruction Algorithm

I40s

I40s

I70h

I70h

Window Width and Level

410/10

410/10

1776/176

1776/176

Reconstruction Comments: When generating mixed images, the DE composition is set to 0.3.

 

Contrast Parameters

Parameters

Contrast Type

 Non-ionic

Contrast Volume

 120 mL

Saline Flush

 N/A

Injection Rate

 2-3 mL/sec

Oral Contrast

 N/A

Contrast Volume

 N/A

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