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Optimization of deterministic transport parameters for the calculation of the dose distribution around a high dose-rate brachytherapy source
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10.1118/1.2919074
/content/aapm/journal/medphys/35/6/10.1118/1.2919074
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/35/6/10.1118/1.2919074

Figures

Image of FIG. 1.
FIG. 1.

The left-hand diagram is the MCNPX and Attila™ model of the mHDRv2 source. The origin is at the center of the active source core. The right-hand diagram is the Attila™ unstructured tetrahedral mesh of the source core, stainless steel shell and 2 mm segment of cable. All units are in millimeters.

Image of FIG. 2.
FIG. 2.

Percent difference distributions between Attila™ and MCNPX dose calculations for the mHDRv2 source. (a) (left) is the 5 energy group, , , trace to quadrature points-quadratic simulation on the medium mesh. (b) (right) is the 5 energy group, , , trace to quadrature points-quadratic simulation on the medium mesh. This figure demonstrates that using a higher order mitigates ray-effects.

Image of FIG. 3.
FIG. 3.

Percent difference distribution between Attila™ and MCNPX dose calculations for the mHDRv2 source. (a) is the 5 energy group, , , trace to quadrature points-quadratic simulation on the medium mesh. (b) is the 5 energy group, , , trace to quadrature points-quadratic simulation on the medium mesh. (c) is the 5 energy group, , , trace to quadrature points-quadratic simulation on the medium mesh.

Image of FIG. 4.
FIG. 4.

Percent difference distribution between Attila™ and MCNPX dose calculations for the mHDRv2 source. (a) is the 5 energy group, , , trace to quadrature points-quadratic simulation on the coarse mesh. (b) is the 5 energy group, , , trace to quadrature points-quadratic simulation on the fine mesh.

Tables

Generic image for table
TABLE I.

Statistics related to the Attila™ and MCNPX calculations for 15 and 5 energy groups, and order, ray-tracing style, and mesh size. TQr indicates trace to quadrature points-quartic, TC indicates trace to quadrature points-cubic, TQ indicates trace to quadrature points-quadratic, and TL indicates trace to quadrature points-linear. Fine indicates the 92 235 element mesh, Medium indicates the 55 064 element mesh, Coarse indicates the 41 072 element mesh, and time.

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/content/aapm/journal/medphys/35/6/10.1118/1.2919074
2008-05-12
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optimization of deterministic transport parameters for the calculation of the dose distribution around a high dose-rate I192r brachytherapy source
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/35/6/10.1118/1.2919074
10.1118/1.2919074
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