Dexcowin ADX6000s, User Manual

Page: 107 / 110

USER Manual
106
11.8.2 Test method and result of stray radiation

The device and environment setup for measurement of stray radiation is Figure 11.12.

After all setups, measure the stray radiation in the significant zone of occupancy.

Considering use environment of device, set up distance between Focal spot and
water equivalent phantom as 20 cm (0 cm from collimator) and 50 cm (30cm from
collimator) and measure.
 The measuring points in the significant zone of occupancy are every 10cm point
from 0cm to 200cm and the measuring point at each height is as red circles in
Figure 11.12.
 Exposure time for each measurement is 1sec.
Figure 11.12 Test method of stray radiation
200[cm]
60[cm]
100[cm]
20[cm]
15[cm]
25[cm]
60[cm]
Focal spot
Water equivalent
phantom
Measurement points
Significant zones
of occupancy
Significant zones
of occupancy
60[cm]
50[cm]