Acquisition Phase	Phase Included	Scan Delay	Respiration Phase	Anatomical Coverage
Non Contrast	Yes	N/A	Inspiration	Limited to the region 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: IV contrast may be useful if a soft tissue mass or abscess is being evaluated. All scans are performed using the ALARA principle.

Technical Parameters	Parameters
kVp	120
Effective mAs	Use dose reduction software
Quality Reference mAs	190
Time (Rotation)	1.0 sec
Average Acquisition Time	16-18 sec
Collimation	16 x 0.3mm
Pitch Value	0.85
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 is used to reduce patient dose.

Reconstruction Parameters	Bone	Thin Data	Thin Data	Thin Data
Slice Thickness	2 mm	0.4 mm	2 mm	0.6 mm
Reconstruction Spacing	2 mm	0.2 mm	2 mm	0.4 mm
Reconstruction Algorithm	V90u (3)	V80u (3)	U30u	U30u
Window Width and Level	1776/176	1776/176	410/10	410/10
Reconstruction Comments: As a result of using the 16 x 0.3 mm collimator, the reconstructed field of view is limited to 30cm. 3D VRT reconstructions are also performed.

Reconstruction Parameters	Coronal	Sagittal	Coronal	Sagittal
Slice Thickness	2 mm	2 mm	2 mm	2 mm
Reconstruction Spacing	2 mm	2 mm	2 mm	2 mm
Reconstruction Algorithm	V90u (3)	V90u (3)	U30u	U30u
Window Width and Level	1776/176	1776/176	410/10	410/10
Reconstruction Comments: As a result of using the 16 x 0.3 mm collimator, the reconstructed field of view is limited to 30cm. 3D VRT reconstructions are also performed.

Contrast Parameters	Parameters
Contrast Type	Non-ionic
Contrast Volume	80-120 mL
Saline Flush	N/A
Injection Rate	2-3 mL/sec
Oral Contrast	N/A
Contrast Volume	N/A
Comments: IV contrast is not routinely necessary, however, if warranted we use the above protocol.