Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

 N/A

 N/A

 N/A

N/A

Arterial Phase

 N/A

N/A

N/A

N/A

Venous Phase

 Yes

40 sec

 N/A

 Base of skull through apex

Delayed Phase

 N/A

N/A

 N/A

N/A

Scan Comments: If a bleed is suspected non contrast images should be obtained prior to CTV

 

Technical Parameters

Parameters

kVp

120

Effective mAs

400

Care Dose Reference mAs

N/A

Time (Rotation)

1.0 sec

Average Acquisition Time

29 sec

Collimation

64 x 0.6mm

Pitch Value

0.55

Scan Direction

craniocaudal

Comments: Decreasing the rotation time or increasing the pitch will allow for faster scan times when patient motion is a concern.

 

Reconstruction Parameters

Soft Tissue

Thin Data

Bone

Slice Thickness

5mm

0.75mm

5mm

Reconstruction Spacing

5mm

0.5mm

5mm

Reconstruction Algorithm

H30

H20

H60

Window Width and Level

100 / 30

100 / 30

2500 / 500

Reconstruction Comments:  3D MPRs can be performed to correct positioning.

 

Contrast Parameters

Parameters

Contrast Type

Non ionic

Contrast Volume

100 ml

Saline Flush

N/A

Injection Rate

3-4ml / sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments: A fixed delay of 40 seconds is optimal.

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Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

 N/A

 N/A

 N/A

N/A

Arterial Phase

 N/A

N/A

N/A

N/A

Venous Phase

 Yes

40 sec

 N/A

 Base of skull through apex

Delayed Phase

 N/A

N/A

 N/A

N/A

Scan Comments: If a bleed is suspected non contrast images should be obtained prior to CTV

 

Technical Parameters

Parameters

kVp

120

Effective mAs

400

Care Dose Reference mAs

N/A

Time (Rotation)

1.0 sec

Average Acquisition Time

29 sec

Collimation

64 x 0.6mm

Pitch Value

0.55

Scan Direction

craniocaudal

Comments: Decreasing the rotation time or increasing the pitch will allow for faster scan times when patient motion is a concern.

 

Reconstruction Parameters

Soft Tissue

Thin Data

Bone

Slice Thickness

5mm

0.75mm

5mm

Reconstruction Spacing

5mm

0.5mm

5mm

Reconstruction Algorithm

H30

H20

H60

Window Width and Level

100 / 30

100 / 30

2500 / 500

Reconstruction Comments:  3D MPRs can be performed to correct positioning.

 

Contrast Parameters

Parameters

Contrast Type

Non ionic

Contrast Volume

100 ml

Saline Flush

N/A

Injection Rate

3-4ml / sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments: A fixed delay of 40 seconds is optimal.