Reproducibility, Linearity, & HVL Testing
CPI Canada Inc
Page 12 Rev. A X-Ray Generator Service Manual Supplement 740917-00
5.0 H.V.L.
EVALUATION
(Cont)
ADDED ALUMINUM FILTER
DOSE (mR)
RELATIVE TRANSMISSION
0 249
0 244
0 247
0 (Average of above three readings)
247
1.00
2 162
.66
1 131
.53
3 70
.28
Table 12: HVL dose values (example)
Figure 3: HVL plot (example)
By interpolating the thickness of Al at a relative transmission value of 0.5, it can be seen that the HVL is
approximately 3.3.