Chapter 10: Image Acquisition
5495975-1EN Rev.9
10-28
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Table 10-2
Detector sensing areas
Area(s) Selected
Application
Patient Positioning
Area 2
Controls the exposure for an
area of interest at the center of
the X-ray field.
The patient’s area of interest is in
the X-ray field center.
Area 1
Controls the exposure for an
area of interest at the upper left
quadrant of the full size
radiograph.
The patient’s area of interest is in
the upper left quadrant of the X-
ray field.
Area 3
Controls the exposure for an
area of interest at the upper
right quadrant of the full size
radiograph.
The patient’s area of interest is in
the upper right quadrant of the
X-ray field.
Areas 1 and 3
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.
The patient’s area of interest is
aligned with sensing Areas 1
and 3.
All Areas
Controls the exposure to allow
the average density of the entire
radiograph to approximate the
value of the pre-selected
density.
The patient’s area of interest is
within the boundary of the X-ray
field.