Acquisition Phase	Phase Included	Scan Delay	Respiration Phase	Anatomical Coverage
Non Contrast	N/A	N/A	N/A	N/A
Arterial Phase	Yes	Bolus triggered	Inspiration	diaphragm through pubic symphysis
Venous Phase	Yes	60 sec	Inspiration	diaphragm through iliac crest
Delayed Phase	Yes	5-7 min	Inspiration	kidneys through bladder
Scan Comments: Scan ranges are limited to a specific area of interest to avoid unnecessary patient dose. Dual energy post-processing software can be used to eliminate the need for acquiring non-contrast images. Dual energy is used only for the arterial phase images in order to reduce the number of images generated for each study. Single energy is used for all other phases. For specific technical parameters, see the single energy kidney mass protocol. All scans are performed using the ALARA principle. 3D post-processing is performed with this protocol.

Technical Parameters	Parameters
kVp	100/140
Effective mAs	Use dose reduction software
Quality Reference mAs	250/193
Time (Rotation)	0.5 sec
Average Acquisition Time	10-15 sec
Collimation	32 x 0.6mm
Pitch Value	0.8
Scan Direction	Craniocaudal
Comments: Images are acquired using 100/140 kvp setting with a Sn filter. Dose reduction software is used to reduce patient dose. The pitch value should remain below 1.0 to reduce any artifacts during post-processing.

Reconstruction Parameters	Soft Tissue	Thin Data	Lung	Coronal
Slice Thickness	3 mm	0.75 mm	3 mm	3 mm
Reconstruction Spacing	3 mm	0.5 mm	3 mm	3 mm
Reconstruction Algorithm	B31f	B20f	B80f	B31f
Window Width and Level	410/10	410/10	1600/-500	410/10
Reconstruction Comments:

Reconstruction Parameters	Sagittal
Slice Thickness	3 mm
Reconstruction Spacing	3 mm
Reconstruction Algorithm	B31f
Window Width and Level	410/10
Reconstruction Comments:

Contrast Parameters	Parameters
Contrast Type	Non-ionic
Contrast Volume	120 mL
Saline Flush	N/A
Injection Rate	4-5 mL/sec
Oral Contrast	H2O
Contrast Volume	1000 mL
Comments: Bolus tracking is performed off the abdominal aorta using a 230 HU trigger setting.