Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

N/A

Limited to area of interest

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.  IV contrast may be useful if a soft tissue mass or abscess is being evaluated.

Technical Parameters

Parameters

kVp

120

Effective mAs

300

Care Dose Reference mAs

N/A

Time (Rotation)

1.0 sec

Average Acquisition Time

20  sec

Collimation

16 x 0.3mm

Pitch Value

0.8

Scan Direction

Craniocaudal

Comments: The UHR protocol is used to improve spatial resolution and fine detail. The limitation is that the scan time is significantly longer when compared to using a larger collimator size. Dose reduction software can be used to limit patient exposure. 

Reconstruction Parameters

Bone

Thin Data

Soft Tissue

Slice Thickness

2mm

0.4mm

2mm

Reconstruction Spacing

2mm

0.2mm

2mm

Reconstruction Algorithm

U90u

U70u

U30u

Window Width and Level

410 / 10

1776 / 176

410 / 10

Reconstruction Comments:  Additionally a soft tissue thin data set is also performed using a 0.6mm x 0.4mm slices with an U30u algorithm. As a result of using the 16x0.3mm collimator the reconstructed field of view is limited to 30cm.

Contrast Parameters

Parameters

Contrast Type

Non Ionic

Contrast Volume

80ml

Saline Flush

N/A

Injection Rate

2-3ml/sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments: IV contrast is not routinely necessary however if warranted we use the above protocol.

Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

N/A

Limited to area of interest

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.  IV contrast may be useful if a soft tissue mass or abscess is being evaluated.

Technical Parameters

Parameters

kVp

120

Effective mAs

300

Care Dose Reference mAs

N/A

Time (Rotation)

1.0 sec

Average Acquisition Time

20  sec

Collimation

16 x 0.3mm

Pitch Value

0.8

Scan Direction

Craniocaudal

Comments: The UHR protocol is used to improve spatial resolution and fine detail. The limitation is that the scan time is significantly longer when compared to using a larger collimator size. Dose reduction software can be used to limit patient exposure. 

Reconstruction Parameters

Bone

Thin Data

Soft Tissue

Slice Thickness

2mm

0.4mm

2mm

Reconstruction Spacing

2mm

0.2mm

2mm

Reconstruction Algorithm

U90u

U70u

U30u

Window Width and Level

410 / 10

1776 / 176

410 / 10

Reconstruction Comments:  Additionally a soft tissue thin data set is also performed using a 0.6mm x 0.4mm slices with an U30u algorithm. As a result of using the 16x0.3mm collimator the reconstructed field of view is limited to 30cm.

Contrast Parameters

Parameters

Contrast Type

Non Ionic

Contrast Volume

80ml

Saline Flush

N/A

Injection Rate

2-3ml/sec

Oral Contrast

N/A

Contrast Volume

N/A

Comments: IV contrast is not routinely necessary however if warranted we use the above protocol.