Fluke Biomedical 8000 Victoreen - Manual (Page 15)

2
Operation
General
2-3
NOTE
Do not rest the cone on the detector. This may
depress the top of the ion chamber and cause
incorrect exposure measurements.
Make sure that the detector is aligned along the axis of the x-ray tube and that the tube is perpendicular
to the detector's top surface and is centered over the detector crosshairs.
Mammography
Install the Mammo filter slide in the detector and set the filter slide for the x-ray machine’s target material.
Position the detector under the x-ray tube with the top of the detector facing up. Align the detector along
the axis of the x-ray tube to minimize heel effect. Set x-ray tube SSD (normally 26 inches) and collimate
the beam size to the square alignment marks on the top of the detector. Line up the front edge of the
square alignment mark on the top of the detector with the front edge (toward the chest wall) of the
collimated x-ray beam.
Fluoroscopy
Install the W/Al filter slide in the detector and set the filter slide to the desired kVp range. The kVp range
is the range closest to the detector front panel.
Position the detector upside down on the table (the top of the detector must be positioned toward the x-
ray tube) and align the detector along the axis of the x-ray tube to minimize heel effect. Using the
centering marks provided on the table (or other centering methods), center the detector over the x-ray
beam. Don protective clothing and energize the fluoroscope to view the detector on the fluoro screen.
Move the fluoroscope so that the lead shield containing the NERO mAx’s detector diodes (opaque
rectangle) is centered on the screen.
X-Ray Tube Axis
Fluoro Detector Positioning
Collimate to this area