Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

N/A

Entire upper teeth through the vertex

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

320

Time (Rotation)

1.0 sec.

Average Acquisition Time

4-5 sec.

Collimation

64 x 0.6 mm

Pitch Value

0.65

Scan Direction

Caudocranial
Comments: CareDose is used to reduce patient dose.

 

Reconstruction Parameters

Bone Open Field

Soft Tissue Open Field

Thin Data Open Field

Thin Data Open Field

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

Ur69 (3)

Uh36 (3)

Ur69 (1)

Uh36 (1)

Window Width and Level

2500/500

100/30

2500/500

100/30

Reconstruction Comments: An open DFOV is used to include the nose and posterior skull. Coned down reconstructions are performed specifically over the right and left temporal bones. 3D MPR’s can be performed to correct positioning.

 

Reconstruction Parameters

Thin Data (R)

Thin Data (R)

Thin Data (L)

Thin Data (L)

Slice Thickness

0.6 mm

0.6 mm

0.6 mm

0.6 mm

Reconstruction Spacing

0.6 mm

0.6 mm

0.6 mm

0.6 mm

Reconstruction Algorithm

Ur69 (1)

Uh36 (1)

Ur69 (1)

Uh36 (1)

Window Width and Level

2500/500

100/30

2500/500

100/30

Reconstruction Comments: An open DFOV is used to include the nose and posterior skull. Coned down reconstructions are performed specifically over the right and left temporal bones. 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.