Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

N/A

Entire upper teeth through the vertex to include all fiducials

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: Iso-centering the patient within the gantry is key to image quality. All scans are performed using the ALARA principle.

 

Technical Parameters

Parameters

kVp

120

Effective mAs

400

Quality Reference mAs

N/A

Time (Rotation)

1.0 sec

Average Acquisition Time

6-8 sec

Collimation

128 x 0.6mm

Pitch Value

0.55

Scan Direction

Caudocranial

Comments:Iso-centering the patient within the gantry is key to image quality.

 

Reconstruction Parameters

Soft Tissue

Bone

Thin Data

Thin Data

Slice Thickness

2 mm

2 mm

0.6 mm

0.6 mm

Reconstruction Spacing

2 mm

2 mm

0.6 mm

0.6 mm

Reconstruction Algorithm

H30s

H60s

H30s

H60s

Window Width and Level

100/30

2500/500

100/30

2500/500

Reconstruction Comments: An open DFOV is used to include the nose and posterior skull. 3D MPR’s can be performed to correct positioning.

 

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.