Carestream Quantum Odyssey HF QG-32, Operator'S Manual

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Chapter 4 APR Editor
HF Series X-ray Generators - Operator’s Manual Revision Q
Quantum Medical Imaging, LLC
4-13
NOTE: The "CM Step" value you set in the
APR Edit procedure is only used to estab-
lish the number of CM steps between pro-
grammed set points. When the system is
in actual APR mode of operation, pres-
sing the CM increase/decrease keys will
change the CM value in increments of
one.
The kVp, mA and mAs (or time) values between each of the
ten thickness set points will have interpolated values based
on the lower set point’s exposure settings. For example,
suppose at 10 CM’s the kVp value is set to 50, the CM
increment value is set to 4, and the next (14 CM) thickness
set point’s kVp value is set to 54. When the operator
chooses this view and selects a thickness of 11 CM’s, the
system automatically adjusts the kVp for 51, and at 12 CM’s
it will be 52, and so forth up to 54.
h. Select the appropriate film/screen combination to be used for
this procedure. (Ensure the selected film/screen combination
has been previously calibrated). Pressing the key adjacent to
the
Film/Speed Combination field (see Figure 4-10, item
g) sequences through the available film/screen combination
choices. The factory default choices are: WALL 40", WALL
72", TABLE 40", 100 Speed, 200 Speed, 800 Speed, and
Film/Screen7. If the Digital Receptor setting in Service Con-
figuration Menu is enabled, an eighth option entitled "Digital"
is also provided. Note that selection of film/screen combina-
tion is the only method to select a film speed for APR proce-
dures.
Only select film/screens that have been
calibrated.
i. The FILM SPEED field (see Figure 4-10, item h) displays the
"base" film speed setting. The "base" film speed is the speed
used to formulate the APR procedure.
j. Select the appropriate kVp, mA and mAs (or time) values for
Procedure Step 1, (see Figure 4-10, item i). These values are
the settings that will appear automatically when the operator
accesses this APR anatomical view at minimum thickness
selection. (Note: During normal APR operation, any pre-pro-
grammed kVp, mA or mAs/time value can be manually modi-
fied (i.e., overridden) by the operator without returning to
APR edit mode.)