GE Definium 5000 Operator's Manual page 108

Table 7-1 Detector sensing areas
Area(s) Selected
Area 2
Area 1
Area 3
Areas 1 and 3
All Areas
Definium 5000 X-Ray System
Operator Manual
Chapter 7: Automatic Exposure Control (AEC)
Application
Controls the exposure for an
area of interest at the center of
the X-ray field.
Controls the exposure for an
area of interest at the upper left
quadrant of the full size
radiograph.
Controls the exposure for an
area of interest at the upper
right quadrant of the full size
radiograph.
Controls the exposure for two
symmetrical parts of the body,
such as lungs or kidneys.
Because Area 2 is not selected
when using areas 1 and 3 for
this application, the vertical
column should not affect the
exposure, providing the patient
is correctly positioned.
Controls the exposure to allow
the average density of the
entire radiograph to
approximate the value of the
pre-selected density.
5197809-1EN Rev. 4 (13 February 2008)
© 2008 General Electric Company. All rights reserved.
Patient Positioning
The patient's area of interest is
in the X-ray field center.
The patient's area of interest is
in the upper left quadrant of
the X-ray field.
The patient's area of interest is
in the upper right quadrant of
the X-ray field.
The patient's area of interest is
aligned with sensing Areas 1
and 3.
The patient's area of interest is
within the boundary of the X-
ray field.
7-6