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

Patient dependent

Inspiration

Abdomen to include the specific region of interest

Delayed Phase

N/A

N/A

N/A

N/A

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

 

Technical Parameters

Parameters

kVp

Care kV (ref. kV 120)

Effective mAs

CareDose

Care Dose Reference mAs

150

Time (Rotation)

0.5 sec

Average Acquisition Time

2-3 sec

Collimation

128 x 0.6mm

Pitch Value

1.4

Scan Direction

Craniocaudal

Comments: CareDose is used to limit patient exposure. 

 

Reconstruction Parameters

Soft Tissue

Thin Data

Lung

Slice Thickness

3mm

1.5mm

3mm

Reconstruction Spacing

3mm

1.0mm

3mm

Reconstruction Algorithm

I30f

I30f

I70f

Window Width and Level

410/10

410/10

1600/-500

Reconstruction Comments:  Additionally, a thick bone data set is also performed using 3.0mm x 3.0mm slices with an I70f algorithm and a window width and level of 1776/176. Coronal and sagittal soft tissue image reconstructions are also performed.

 

Contrast Parameters

Parameters

Contrast Type

Non ionic

Contrast Volume

Weight based

Saline Flush

N/A

Injection Rate

1.5-3ml/sec

Oral Contrast

Non ionic

Contrast Volume

Weight based

Comments: The scan delay is determined both in part by patient age, IV access, and injection rate.