Physics Bucharest 2017
Comparison of central axis depth doses at two source- surface distances (Philips SL75/10) The inverse square law is only “fully compensated at D max ” The scatter differ due to different divergence
100
3% @ 10 cm depth
% dd
8 MV
50
100 cm SSD
142 cm SSD
0
2
10
5
depth in phantom (cm)
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