Fluke Biomedical TNT 12000 - Manual (Page 34)

TNT 12000
Users Manual
2-6
How to Position the X-ray Detector
To make measurements, the X-ray Detector must be put into the X-ray beam. The marks
on the face of the Detector help align it in the X-ray beam. See Figure 2-3 for a
description of how to use the marks for an accurate measurement. The distance from the
top surface of the X-ray Detector to the solid state detectors is 0.230 inches or 5.84 mm.
For radiographic and fluoroscopic measurements, center the
beam on the RAD crosshairs and collimate the beam to the grey
outlined area or larger.
For dental measurements, center the cone over the grey
outlined area.
For mammographic measurements, center the beam on the
MAMMO crosshairs and collimate the beam to the red outlined
area or larger.
Dose measurement area for all modes.
fct09.eps
Figure 2-3. X-ray Detector Alignment Marks
Detector Placement with Above Table X-ray Source
For X-ray machines that have the X-ray source above the table, align the Detector face
up, in the middle of the beam, with the long axis of the Detector perpendicular to the axis
of the X-ray tube. See Figure 2-4.
Above Table
X-Ray Tube
Tube Axis
TNT 12000WD
Long Axis of TNT 12000WD
X-Ray Table
fct05.eps
Figure 2-4. X-ray Detector Setup for Above Table X-ray Source