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○
The mA parameter can be changed to what displays in the [Change mA] button
selection.
■
If you choose to reduce mA, you may be reducing image quality.
■
Make sure that you always use enough mA to get the best image quality.
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Adjust the Prep Delay based on instructions for Voice/Lights/Timer.
○
If multiple groups are prescribed, the
allowing you to make choices for each group.
○
Once you have made choices that satisfy the system without compromising image
quality, a message displays that tube cooling is no longer needed.
2. Click [Confirm Settings] to start the scan.
8.3 Optimize patient dose
For years GE has followed the
our customers optimize dose. GE has provided many tools to help the clinician minimize dose
while achieving clinically diagnostic image quality.
GE CT is a proven leader in delivering dose efficiency in every scanner category. GE has
achieved this position through a "total system" approach. The following features are some that
contribute to our "total system" approach and affect patient dose. Not all features are available
on each system.
8.3.1 Pediatric Protocols
Pediatric protocols are based upon a child's size, age, and weight and tailor the dose or
treatment to the size of the patient.
The Head and Orbit categories are age-based. The rest of the categories, except
Miscellaneous, are height and weight-based.
8.3.2 SmartmA
SmartmA modulates X-ray tube mA to account for specific patient anatomy based on data
gathered from the scout image. You input the desired image quality (Noise Index) and the
system adjusts the mA to achieve this within the bounds of the inputted minimum and maximum
mA.
8.3.3 Organ Dose Modulation (ODM)
By modulating the X-ray tube current as a function of X-ray tube angle, Organ Dose Modulation
(ODM) enables targeted reduction of the X-ray tube current towards the anterior surface of the
patient, providing enhanced dose reduction to radio-sensitive organs of the patient while
maintaining overall image quality.
8.3.4 AEC with Cardiac Modes
SmartmA modulates X-ray tube mA to account for specific patient anatomy based on clinical
task and data gathered from the scout image. You input the desired image quality (Noise Index)
and the system adjusts the mA to achieve this within the ECG-based mA profile.
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Optimize Message bar updates for each group,
As Low as Reasonably Achievable (ALARA) principle in helping
Revolution CT User Manual
Direction 5480385-1EN, Revision 1
8 Additional Scan Features
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Troubleshooting
