Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

 Yes

 N/A

 inspiration

 Nasopharynx through the diaphragm

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:  All Scans are performed using the ALARA principle.

 

Technical Parameters

Parameters

kVp

100 or 120

Effective mAs

CareDose

Care Dose Reference mAs

200

Time (Rotation)

0.5 sec

Average Acquisition Time

8-10 sec

Collimation

64 x 0.6mm

Pitch Value

0.8

Scan Direction

craniocaudal

Comments: Using CareDose will eliminate image noise especially in the shoulder region. 100kVp can be used on average size patients.

 

Reconstruction Parameters

Soft Tissue

Thin Data

Lung

Slice Thickness

3mm

0.75mm

3mm

Reconstruction Spacing

3mm

0.5mm

3mm

Reconstruction Algorithm

B30f

B20f

B80f

Window Width and Level

410 / 10

410 / 10

1600 / -500

Reconstruction Comments: Coronal and sagittal recons are performed aligned to the patient's trachea.

 

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: IV Contrast is not routinely necessary for this study.