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

Abdomen to include dome of liver through iliac artery bifurcation

Venous Phase

Yes

60 sec.

Inspiration

Abdomen to include dome of liver through iliac artery bifurcation

Delayed Phase

N/A

N/A

N/A

N/A

Scan Comments: A delayed phase of approximately 3 minutes may be helpful to better visualize the suspected lesion. If both an abdomen and pelvis are ordered, the pelvis is imaged during the venous phase. All scans are performed using the ALARA principle. 3D post-processing is performed with this protocol.

 

Technical Parameters

Parameters

kVp

Care kV (ref. kV 120)

Effective mAs

CareDose

Care Dose Reference mAs

200

Time (Rotation)

0.5 sec

Average Acquisition Time

3-4 sec.

Collimation

192 x 0.6mm

Pitch Value

0.6

Scan Direction

Craniocaudal

Comments: CareDose is used to reduce patient dose.

 

Reconstruction Parameters

Soft Tissue

Thin Data

Lung

Slice Thickness

 3mm

 0.75 mm

 3mm

Reconstruction Spacing

 3mm

 0.5 mm

 3mm

Reconstruction Algorithm

Br40

Br36

 BI57

Window Width and Level

 410/10

 410/10

 1600/-500

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

 

Contrast Parameters

Parameters

Contrast Type

Non-ionic

Contrast Volume

120 mL

Saline Flush

N/A

Injection Rate

4-5 mL/sec.

Oral Contrast

H2O

Contrast Volume

1000 mL

Comments: Bolus tracking is performed off the abdominal aorta using a 230 HU trigger setting