Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

N/A

N/A

N/A

N/A

Arterial Phase

Yes

Bolus triggered

Inspiration

Lung apices through the diaphragm to include the adrenal glands

Venous Phase

N/A

N/A

N/A

N/A

Delayed Phase

N/A

N/A

N/A

N/A

Scan Comments: A flash spiral mode can be used to improve scan speed and limit breathing artifact if the patient is short of breath. All scans are performed using ALARA principle.

Technical Parameters

Parameters

kVp

Care kV (ref. kV 120)

Effective mAs

Use dose reduction software

Care Dose Reference mAs

170

Time (Rotation)

0.5 sec

Average Acquisition Time

4-6 sec

Collimation

128 x 0.6mm

Pitch Value

1.0

Scan Direction

Craniocaudal

Comments: Dose reduction software is used to reduce patient dose. 100 kVp can be used for most average size patients which will significantly reduce patient dose.

Reconstruction Parameters

Soft Tissue

Thin Data

Lung

Coronal

Slice Thickness

 3 mm

0.75 mm

3 mm

2 mm

Reconstruction Spacing

 3 mm

0.5 mm

3 mm

2 mm

Reconstruction Algorithm

B30f

B20f

B80f

B30f

Window Width and Level

550/50

550/50

1600/-500

410/10

Reconstruction Comments: 

Reconstruction Parameters

Sagittal

Sliding MIP Axial

Slice Thickness

2 mm

16 mm

Reconstruction Spacing

2 mm

3 mm

Reconstruction Algorithm

B30f

B50f

Window Width and Level

410/10

700/80

Reconstruction Comments: 

Contrast Parameters

Parameters

Contrast Type

Non-ionic

Contrast Volume

80-120mL

Saline Flush

N/A

Injection Rate

5-6 mL/sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments: Bolus tracking is performed off the pulmonary trunk using a 200 HU trigger setting.