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 the ALARA principle.

 

Technical Parameters

Parameters

kVp

Care kV (ref. kV 100)

Effective mAs

CareDose

Quality Reference mAs

105

Time (Rotation)

0.28 sec.

Average Acquisition Time

4-6 sec.

Collimation

128 x 0.6 mm

Pitch Value

1.2

Scan Direction

Craniocaudal

Comments: CareDose 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

3 mm

Reconstruction Spacing

 3 mm

0.5 mm

 3 mm

3 mm

Reconstruction Algorithm

Bv40 (3)

Bv38 (3)

Bl57 (3)

Bv40 (3)

Window Width and Level

550/50

550/50

1600/-500

410/10

Reconstruction Comments: 

 

Reconstruction Parameters

Sagittal

Sliding MIP Axial

Slice Thickness

 3 mm

16 mm

Reconstruction Spacing

 3 mm

3 mm

Reconstruction Algorithm

Bv40 (3)

Br51 (3)

Window Width and Level

410/10

700/80

Reconstruction Comments: 

 

Contrast Parameters

Parameters

Contrast Type

Non-ionic

Contrast Volume

80-120 mL

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.