Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

No

N/A

 N/A

N/A

Arterial Phase

No

N/A

 N/A

N/A

Venous Phase

Yes

 40 sec

inspiration

Lung apices through the diaphragm to include adrenal glands

Delayed Phase

No

N/A

N/A

N/A

Scan Comments:  Venous phase imaging is routinely performed with a 40 sec delay.  All scans are performed using the ALARA principle.

Technical Parameters

Parameters

kVp

100 or 120

Effective mAs

Use dose reduction software

Care Dose Reference mAs

150

Time (Rotation)

0.5 sec

Average Acquisition Time

8-10 sec

Collimation

64 x 0.6mm

Pitch Value

0.8

Scan Direction

craniocaudal

Comments: 100 kVp can be used for most average size patients which will significantly reduce patient dose. Dose reduction software is also used to limit patient exposure and maintain image quality.

Reconstruction Parameters

Soft Tissue

Thin Data

Lung

Slice Thickness

3mm

0.75mm

3mm

Reconstruction Spacing

3mm

0.5mm

3mm

Reconstruction Algorithm

B30f

B20f

B80f

Window Width and Level

410 / 10

410 / 10

1600 / -500

Reconstruction Comments: A high res recon can also be performed using a1mm x 10mm using a B80f kernel and a window of 1600 / -500. Coronal and sagittal MPRs are performed.

Contrast Parameters

Parameters

Contrast Type

Non ionic

Contrast Volume

100ml

Saline Flush

N/A

Injection Rate

2-3ml / sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments: A fixed delay of 40 seconds is optimal.

Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

No

N/A

 N/A

N/A

Arterial Phase

No

N/A

 N/A

N/A

Venous Phase

Yes

 40 sec

inspiration

Lung apices through the diaphragm to include adrenal glands

Delayed Phase

No

N/A

N/A

N/A

Scan Comments:  Venous phase imaging is routinely performed with a 40 sec delay.  All scans are performed using the ALARA principle.

Technical Parameters

Parameters

kVp

100 or 120

Effective mAs

Use dose reduction software

Care Dose Reference mAs

150

Time (Rotation)

0.5 sec

Average Acquisition Time

8-10 sec

Collimation

64 x 0.6mm

Pitch Value

0.8

Scan Direction

craniocaudal

Comments: 100 kVp can be used for most average size patients which will significantly reduce patient dose. Dose reduction software is also used to limit patient exposure and maintain image quality.

Reconstruction Parameters

Soft Tissue

Thin Data

Lung

Slice Thickness

3mm

0.75mm

3mm

Reconstruction Spacing

3mm

0.5mm

3mm

Reconstruction Algorithm

B30f

B20f

B80f

Window Width and Level

410 / 10

410 / 10

1600 / -500

Reconstruction Comments: A high res recon can also be performed using a1mm x 10mm using a B80f kernel and a window of 1600 / -500. Coronal and sagittal MPRs are performed.

Contrast Parameters

Parameters

Contrast Type

Non ionic

Contrast Volume

100ml

Saline Flush

N/A

Injection Rate

2-3ml / sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments: A fixed delay of 40 seconds is optimal.