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/AN/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: Isocentering the patient within the gantry is key to image quality. All scans are performed using the ALARA principle.

 

Technical Parameters

Parameters

kVp

Semi (ref. kV 120)

Effective mAs

CareDose

Quality Reference mAs

330

Time (Rotation)

1.0 sec.

Average Acquisition Time

6-8 sec.

Collimation

128 x 0.6 mm

Pitch Value

0.55

Scan Direction

Caudocranial
Comments: Isocentering 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

Hr38 (3)

Hr59 (3)

Hr38 (3)

Hr59 (3)

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.