Abstract:
:The behaviour of scatter dose in 4 and 8 MV wedged x-ray beams has been studied by calculating scatter-to-primary dose ratios (SPR) and comparing these with SPR for non-wedged beams. On the central axis the SPR for wedged and non-wedged beams differ only by a few per cent, a difference which increases slightly with wedge angle and field size. In other points within the field the differences are larger but generally less than 3% of the total dose on the central axis at the same depth. The product rule for points that do not lie in a principal plane is valid within the same limits as for non-wedged beams.
journal_name
Phys Med Bioljournal_title
Physics in medicine and biologyauthors
Brown LH,Siddon RL,Bjärngard BEdoi
10.1088/0031-9155/32/10/010subject
Has Abstractpub_date
1987-10-01 00:00:00pages
1321-6issue
10eissn
0031-9155issn
1361-6560journal_volume
32pub_type
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