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

 40 sec

 inspiration

 2cm above the umbilicus through the lesser trochanter of the femur

Delayed Phase

  N/A

   N/A

  N/A

  N/A

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

Technical Parameters

Parameters

kVp

120

Effective mAs

300

Time (Rotation)

0.5 sec

Average Acquisition Time

10-12 sec

Collimation

64 x 0.6mm

Pitch Value

0.8

Scan Direction

craniocaudal

Comments: The Effective mAs is adjusted based on a patient’s body habitus.  In addition, dose reduction software can be used to maintain image quality while lowering patient dose. 

Reconstruction Parameters

Soft Tissue

Thin Data

Lung

Slice Thickness

 5mm

 0.75mm

 3mm

Reconstruction Spacing

 5mm

 0.5mm

 3mm

Reconstruction Algorithm

 B30F

 B20F

 B80F

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

 120ml

Saline Flush

 N/A

Injection Rate

 3-5ml/sec

Oral Contrast

 N/A

Contrast Volume

N/A

Comments: Oral contrast is not necessary.  A fixed scan delay of 40 seconds is used to ensure adequate vessel opacification.  

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

 40 sec

 inspiration

 2cm above the umbilicus through the lesser trochanter of the femur

Delayed Phase

  N/A

   N/A

  N/A

  N/A

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

Technical Parameters

Parameters

kVp

120

Effective mAs

300

Time (Rotation)

0.5 sec

Average Acquisition Time

10-12 sec

Collimation

64 x 0.6mm

Pitch Value

0.8

Scan Direction

craniocaudal

Comments: The Effective mAs is adjusted based on a patient’s body habitus.  In addition, dose reduction software can be used to maintain image quality while lowering patient dose. 

Reconstruction Parameters

Soft Tissue

Thin Data

Lung

Slice Thickness

 5mm

 0.75mm

 3mm

Reconstruction Spacing

 5mm

 0.5mm

 3mm

Reconstruction Algorithm

 B30F

 B20F

 B80F

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

 120ml

Saline Flush

 N/A

Injection Rate

 3-5ml/sec

Oral Contrast

 N/A

Contrast Volume

N/A

Comments: Oral contrast is not necessary.  A fixed scan delay of 40 seconds is used to ensure adequate vessel opacification.