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QSA Global Inc.
40 North Avenue Burlington, MA 01803
888.272.2242
781.272.2000
F: 781.359.9179
qsa-global.com
Radiation Zones
.
Output Radiation Levels
OpenVision™ HD radiation levels vary depending on kV/mA settings. QSA Global, Inc. performs testing at maximum power
at the highest kV setting (70 kV, 0.17 mA) to verify collimation and image quality. Operators must be aware of safe boundary
distances while using the OpenVision HD. When the main housing is fully expanded (“D” = 53 cm [20.8 in]), the most
susceptible area of high dose rate (when specimens do not block entire X-ray output beam) is immediately adjacent to
detector housing. The “C” callout in Figure 10 is positioned in this approximate area.
Figure 10 OpenVision HD Output Boundary Distances
Figure 10 shows boundary distances for 2, 0.75 and 0.25 mR/hr. Table 3 details typical distances for these boundary levels
with different operating conditions.
Table 3 Boundary Distance Comparison
Main Housing Distance
to Detector (in [cm])
“D”
kV / mA
Boundary Distance (ft [m])
2 mR/hr
(20
Sv/hr)
“A”
0.75 mR/hr
(7.5
Sv/hr)
“B”
0.25 mR/hr
(2.5
Sv/hr)
“C”
20.8 [53] (Fully Expanded)
70 / .17
37.84 [11.53]
61.78
[18.83]
107.01 [32.61]
13.8 [35]
70 / .17
9.48 [2.89]
15.48 [4.72]
26.82 [8.17]
Actual measurements can vary based on the material being scanned and its geometry. To minimize operator exposure,
QSA Global, Inc. recommends using a backscatter shield assembly (Item # 415600) with your OpenVision HD.
Main Housing
Detector
