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: Gout studies are typically performed on the patient’s affected joints and modified for each specific region of interest. All scans are performed using the ALARA principle. 3D post-processing is performed with this protocol.

Technical Parameters

Parameters

kVp

80 / 140

Effective mAs

Use dose reduction software

Quality Reference mAs

211/106

Time (Rotation)

1.0 sec

Average Acquisition Time

20-25 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. Dose reduction software 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

Coronal

Sagittal

Slice Thickness

0.75 mm

0.75 mm

1 mm

1 mm

Reconstruction Spacing

0.5 mm

0.5 mm

1 mm

1 mm

Reconstruction Algorithm

D30s

B70s

B70s

B70s

Window Width and Level

1400/300

1776/176

1776/176

1776/176

Reconstruction Comments: When generating mixed images, the DE composition is set to 0.4

Contrast Parameters

Parameters

Contrast Type

N/A

Contrast Volume

N/A

Saline Flush

N/A

Injection Rate

N/A

Oral Contrast

N/A

Contrast Volume

N/A

Comments: IV contrast is not typically necessary for this exam.