Abstract:
:In a previous paper, we described quality assurance procedures for Hi-Art helical tomotherapy machines. Here, we develop further some ideas discussed briefly in that paper. Simple helically generated dose distributions are modelled, and relationships between these dose distributions and underlying characteristics of Hi-Art treatment systems are elucidated. In particular, we describe the dependence of dose levels along the central axis of a cylinder aligned coaxially with a Hi-Art machine on fan beam width, couch velocity and helical delivery lengths. The impact on these dose levels of angular variations in gantry speed or output per linear accelerator pulse is also explored.
journal_name
Phys Med Bioljournal_title
Physics in medicine and biologyauthors
Fenwick JD,Tomé WA,Kissick MW,Mackie TRdoi
10.1088/0031-9155/50/7/013subject
Has Abstractpub_date
2005-04-07 00:00:00pages
1505-17issue
7eissn
0031-9155issn
1361-6560pii
S0031-9155(05)77076-7journal_volume
50pub_type
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