Set The Kv - GE Revolution CT User Manual

optimum strategy is to find the highest Noise Index sufficient for the clinical task and
let SmartmA select the mA without using significant constraints. Use a slightly lower
Noise Index for small patients and a slightly higher Noise Index for large patients.
■ Enter
scan.
○ For cardiac scans, see guidelines for
3. Click [Apply].
4. Review: For SmartmA and ODM scans, review if the scan is meeting the prescribed Noise
Index from the
If not, click [Adjust] to be presented with a list of solutions with dose changes to realize the
noise versus dose in the prescribed Noise Index.
○
This can only be done during scan set up and not in
○
The system will display an indication when one or more rotations are at the Min mA or
Max mA value specified for SmartmA. If the system indicates this condition, check the
scan parameters in the
results.

4.5.3.2 Set the kV

Manual kV
Use this procedure to manually prescribe the kV.
Scan Settings window, click kV and mA Control .
1. From the
kV Mode and select Manual kV .
2. Click
kV value. Typical applications are listed below.
3. Select a
70 kV for pediatric imaging.
○ Click
○ 80 kV for Bone Mineral Densitomery and Perfusion imaging in the brain and
Click
pediatric imaging.
○ 100 kV for pediatric and small patient imaging.
Click
○ 120 kV for routine imaging of the chest, abdomen, and pelvis areas.
Click
140 kV for imaging the posterior fossa, thick areas, and heavy patients.
○ Click
4. Click [Apply].
kV Assist
Use this procedure to prescribe a scan with kV Assist.
Protocols chapter for information about kV Assist.
See the
1. Select a protocol and verify the Manual kV, mA Mode/SmartmA (Noise Index minimum/
maximum mA) or Manual mA, Slice Thickness, Rotation Time, Pitch, SFOV, and WW/WL
values are acceptable.
282
Min mA and Max mA values, which constrain the mA range used during the
Image Quality widget to view the calculated X and Y, or A, P, R and L values.
mA Table to ensure the acquisition will provide the expected
Direction 5480385-1EN, Revision 1
AEC with Cardiac Modes .
Protocol Management .
Revolution CT User Manual
4 Scan Parameters