Source:http://linkedlifedata.com/resource/pubmed/id/16510945
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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
6
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| pubmed:dateCreated |
2006-3-2
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| pubmed:abstractText |
A simple and finite-termed analytical function for the finite size pencil beam kernel was constructed. The dose cross-profile of a semi-infinite field with field edge at x = 0 can be well fitted by the Boltzmann function. The pencil beam cross-profile of width 2x(0) can be obtained as the difference between two semi-infinite fields shifted by 2x(0). If the profile is centred about x = 0, it can derive from P(x + x(0)) - P(x - x(0)). The penumbra influence can be taken by the penumbra tuning factor f. The parameters A(1), A(2), A(3), A(4), f can be obtained by fitting depth-dose curves and cross-profiles for a set of square fields. The two-dimensional dose distribution F(x, y, x(0), y(0), A(1), A(2), A(3), A(4), f(1), f(2)) of a pencil beam of width (2x(0), 2y(0)) is defined by multiplication of two independent one-dimensional profiles.
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| pubmed:language |
eng
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| pubmed:journal | |
| pubmed:citationSubset |
IM
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| pubmed:status |
MEDLINE
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| pubmed:month |
Mar
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| pubmed:issn |
0031-9155
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| pubmed:author | |
| pubmed:issnType |
Print
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| pubmed:day |
21
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| pubmed:volume |
51
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| pubmed:owner |
NLM
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| pubmed:authorsComplete |
Y
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| pubmed:pagination |
L13-5
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| pubmed:meshHeading |
pubmed-meshheading:16510945-Models, Statistical,
pubmed-meshheading:16510945-Particle Accelerators,
pubmed-meshheading:16510945-Photons,
pubmed-meshheading:16510945-Radiometry,
pubmed-meshheading:16510945-Radiotherapy, Computer-Assisted,
pubmed-meshheading:16510945-Radiotherapy, Conformal,
pubmed-meshheading:16510945-Radiotherapy, Intensity-Modulated
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| pubmed:year |
2006
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| pubmed:articleTitle |
'A finite size pencil beam for IMRT dose optimization'--a simpler analytical function for the finite size pencil beam kernel.
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| pubmed:publicationType |
Letter
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