Acquisition Phase

Phase Included

Scan Delay

Respiration Phase

Anatomical Coverage

Non Contrast

Yes

N/A

Inspiration

Kidneys only

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. For young patients, the arterial phase images can be limited to only include both kidneys and the venous phase images can be eliminated. All scans are performed using the ALARA principle. 3D post-processing is performed with this protocol.

 

Technical Parameters

Parameters

kVp

Care kV (ref. kV 120)

Effective mAs

CareDose

Quality Reference mAs

200

Time (Rotation)

0.5 sec.

Average Acquisition Time

5-7 sec.

Collimation

128 x 0.6 mm

Pitch Value

0.6

Scan Direction

Craniocaudal

Comments: CareDose is used to reduce patient dose. The quality reference mAs can be lowered on non-contrast and delayed images (147 mAs).

 

Reconstruction Parameters

Soft Tissue

Thin Data

Thin Data

Lung

Slice Thickness

 3 mm

0.75 mm

 0.75 mm

3 mm

Reconstruction Spacing

 3 mm

0.5 mm

 0.5 mm

3 mm

Reconstruction Algorithm

Br40 (3)

Br36 (3)

Br36

Bl57 (3)

Window Width and Level

410/10

410/10

410/10

1600/-500

Reconstruction Comments: 

 

Reconstruction Parameters

Coronal

Sagittal

Slice Thickness

 3 mm

3 mm

Reconstruction Spacing

 3 mm

3 mm

Reconstruction Algorithm

Br40 (3)

Br40 (3)

Window Width and Level

410/10

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.