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Analytical representation for Varian EDW factors at off-center points
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10.1118/1.1872532
/content/aapm/journal/medphys/32/5/10.1118/1.1872532
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/32/5/10.1118/1.1872532

Figures

Image of FIG. 1.
FIG. 1.

Dynamic wedge treatment.

Image of FIG. 2.
FIG. 2.

Typical treatment STT as a function of the moving jaw position.

Image of FIG. 3.
FIG. 3.

The diff(%) versus off-axis distance for 6 MV photons (a) and 18 MV photons (b), and a 60 deg wedge: A—current model, B—fractional MU approximation, C—Yu’s model.

Tables

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TABLE I.

Comparison between WFs measured with the help of diodes and WFs obtained by using the CC-13 ion chamber in water. All measurements were performed with the dose rate of . In the case of diodes, a 10 cm slab of solid water was placed on the surface of the profiler. The distance between the target and profiler's surface was 100 cm.

Generic image for table
TABLE II.

Comparison between measured and calculated WFs at off-center points for symmetric fields.

Generic image for table
TABLE III.

Comparison between measured and calculated WFs at off-center points for asymmetric fields.

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/content/aapm/journal/medphys/32/5/10.1118/1.1872532
2005-04-13
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Analytical representation for Varian EDW factors at off-center points
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/32/5/10.1118/1.1872532
10.1118/1.1872532
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