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3.4 Exposure
CAUTION!
The operator is responsible for validation of the exposure parameters before
performing an exposure.
3.4.1 Exposure Hand Control
A
Fig. 3-44 Exposure operator console
3.4.2 Exposure Index
After exposure, the Exposure Index (EXI) and Deviation Index (DI) is shown in the image, in
order to indicate the dose level. See further description of the indexes below.
The exposure index is a measure of the amount of exposure received by the detector and
depends on mAs, the total detector area irradiated respective the beam attenuation. It is
indicative of the image quality.
3.4.3 Deviation Index
The deviation index, DI, gives an indication of the dose level used for capturing the image.
The DI value compares the current standard EXI with the target EXI.
The target EXI is defined by the user. See Imaging system for further description.
Operator´s Manual
C
B
1000-095-071-EN Rev. 2.1
Page 75
User Interface
Exposure operator console in
A. normal position
B. preparation position
C. exposure position
Exposure
OMNERA 500A
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