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

60 sec

inspiration

entire neck to include aortic arch through Circle of Willis

Delayed Phase

N/A

N/A

N/A

N/A

Scan Comments:  All scans are performed using the ALARA principle.

 

Technical Parameters

Parameters

kVp

120

Effective mAs

CareDose

Care Dose Reference mAs

225

Time (Rotation)

1.0 sec

Average Acquisition Time

5-7 sec

Collimation

64 x 0.6mm

Pitch Value

0.55

Scan Direction

craniocaudal

Comments: CareDose is used to reduce patient dose and improve image quality specifically in the shoulder region.

 

Reconstruction Parameters

Soft Tissue

Thin Data

Bone

Slice Thickness

3mm

0.75mm

3mm

Reconstruction Spacing

3mm

0.5mm

3mm

Reconstruction Algorithm

B30f

B20f

B70f

Window Width and Level

350 / 50

350 / 50

2500 / 500

Reconstruction Comments: Coronal and sagittal image reconstructions are also performed.

 

Contrast Parameters

Parameters

Contrast Type

Non ionic

Contrast Volume

80-100ml

Saline Flush

N/A

Injection Rate

2-3ml / sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments:  Preferably we will inject the right arm to limit contrast artifact.

 

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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

60 sec

inspiration

entire neck to include aortic arch through Circle of Willis

Delayed Phase

N/A

N/A

N/A

N/A

Scan Comments:  All scans are performed using the ALARA principle.

 

Technical Parameters

Parameters

kVp

120

Effective mAs

CareDose

Care Dose Reference mAs

225

Time (Rotation)

1.0 sec

Average Acquisition Time

5-7 sec

Collimation

64 x 0.6mm

Pitch Value

0.55

Scan Direction

craniocaudal

Comments: CareDose is used to reduce patient dose and improve image quality specifically in the shoulder region.

 

Reconstruction Parameters

Soft Tissue

Thin Data

Bone

Slice Thickness

3mm

0.75mm

3mm

Reconstruction Spacing

3mm

0.5mm

3mm

Reconstruction Algorithm

B30f

B20f

B70f

Window Width and Level

350 / 50

350 / 50

2500 / 500

Reconstruction Comments: Coronal and sagittal image reconstructions are also performed.

 

Contrast Parameters

Parameters

Contrast Type

Non ionic

Contrast Volume

80-100ml

Saline Flush

N/A

Injection Rate

2-3ml / sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments:  Preferably we will inject the right arm to limit contrast artifact.