Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

Expiration

Entire colon

Arterial Phase

N/A

N/A

N/A

N/A

Venous Phase

N/A

N/A

N/A

N/A

Delayed Phase

N/A

N/A

N/A

N/A

Scan Comments: Images are acquired with the patient positioned supine and prone after the colon has been filled with carbon dioxide. Additional images of the rectum only are acquired following tube removal. All scans are performed using the ALARA principle. A 3D Post Processing is performed with this protocol.

 

Technical Parameters

Parameters

kVp

120

Effective mAs

50

Care Dose Reference mAs

N/A

Time (Rotation)

0.5 sec

Average Acquisition Time

5 sec

Collimation

128 x 0.6mm

Pitch Value

0.8

Scan Direction

Craniocaudal

Comments: CareDose is used to reduce patient dose.

 

Reconstruction Parameters

Soft Tissue

Thin Data

Lung

Slice Thickness

 5mm

 1.0mm

 N/A

Reconstruction Spacing

 5mm

 0.7mm

 N/A

Reconstruction Algorithm

 B30f

 B30f

 N/A

Window Width and Level

 410/10

410/10

 N/A

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

 

Contrast Parameters

Parameters

Contrast Type

 N/A

Contrast Volume

 N/A

Saline Flush

 N/A

Injection Rate

 N/A

Oral Contrast

 N/A

Contrast Volume

 N/A

Comments: Images are acquired following maximum inflation of the colon with carbon dioxide.