Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

Inspiration

Cranio-cervical junction to the T1 vertebra

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.

 

Technical Parameters

Parameters

kVp

Care kV (ref. kV 120)

Effective mAs

CareDose

Care Dose Reference mAs

235

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 successful in eliminating increased image noise in the shoulder region, specifically C6 and C7.

 

Reconstruction Parameters

Soft Tissue

Thin Data

Bone

Slice Thickness

 2mm

 0.75mm

 2mm

Reconstruction Spacing

 2mm

 0.5mm

 2mm

Reconstruction Algorithm

 B30s

 B60s

 B70s

Window Width and Level

 350/40

 2500/500

 2500/500

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 350/40. Coronal and sagittal image reconstructions are performed aligned to the cervical vertebra.

 

Contrast Parameters

Parameters

Contrast Type

 Non ionic

Contrast Volume

 100ml

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.