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Dosimetric analysis of a shielded applicator for nasopharyngeal carcinoma intracavitary brachytherapy: Monte Carlo calculation
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10.1118/1.2168431
/content/aapm/journal/medphys/33/3/10.1118/1.2168431
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/33/3/10.1118/1.2168431

Figures

Image of FIG. 1.
FIG. 1.

The design of the shielded applicator and lead shielding.

Image of FIG. 2.
FIG. 2.

Schematic map of the simulation phantom and the applicator of diameter with 5DP plan. (a) plane ; (b) plane ; (c) plane .

Image of FIG. 3.
FIG. 3.

Coordinates of POI in the reference plane. The dashed line represents the projection of ROI on plane. For the diameter applicator, for the reference plane, and for the diameter applicator, respectively.

Image of FIG. 4.
FIG. 4.

The isodose distributions for the applicator. Relative dose was normalized to the dose prescription point. (a) plane , 5DP plan; (b) plane , 5DP plan: (c) plane , 9DP plan; (d) plane , 9DP plan.

Image of FIG. 5.
FIG. 5.

DVH comparisons. The dashed and solid lines represent the results of the unshielded and shielded applicator, respectively. (a) applicator, 5DP plan; (b) applicator, 9DP plan; (c) applicator, 5DP plan; (d) applicator, 9DP plan.

Image of FIG. 6.
FIG. 6.

Isodose contours of plane in unshielded direction for the diameter applicator shielded vs unshielded in water. The 5DP plan is simulated. The dashed line and solid line represent the dose for unshielded and shielded applicator, respectively.

Image of FIG. 7.
FIG. 7.

Comparison of the relative dose profile along the axis in the simulation phantom with cavity vs without cavity for the diameter applicator. Relative dose is normalized to the dose prescription point. The dashed line and solid line represent the results with and without cavity in the simulation phantom, respectively.

Tables

Generic image for table
TABLE I.

POI dose variation for diameter shielded applicator vs unshielded applicator.

Generic image for table
TABLE II.

POI dose variation for diameter shielded applicator vs unshielded applicator.

Generic image for table
TABLE III.

The variation of and of ROI for diameter shielded applicator vs unshielded applicator.

Generic image for table
TABLE IV.

The variation of and of ROI for diameter shielded applicator vs unshielded applicator.

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/content/aapm/journal/medphys/33/3/10.1118/1.2168431
2006-02-24
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dosimetric analysis of a shielded applicator for nasopharyngeal carcinoma intracavitary brachytherapy: Monte Carlo calculation
http://aip.metastore.ingenta.com/content/aapm/journal/medphys/33/3/10.1118/1.2168431
10.1118/1.2168431
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