SAMPLING TECHNIQUES FOR THE EVALUATION OF TREATMENT PLANS

被引：31

作者：

LU, XQ

CHIN, LM

机构：

[1] Joint Center for Radiation Therapy, Department of Radiation Oncology, Harvard Medical School, Boston

来源：

MEDICAL PHYSICS | 1993年 / 20卷 / 01期

关键词：

SAMPLING METHOD; GRID SIZE; TREATMENT PLANNING; DOSE CALCULATION; DOSE VOLUME HISTOGRAM; NORMAL TISSUE COMPLICATION PROBABILITY; MONTE-CARLO SIMULATION;

D O I：

10.1118/1.597096

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Sampling techniques using randomly distributed points and regular Cartesian grids were compared for the evaluation of volume, dose-volume histogram, tumor control, and normal tissue complication probabilities in radiation treatments. Particularly, the uncertainties associated with each sampling technique in estimating the dose-volume histograms for several dose distributions are analyzed in detail. It is found that the estimation of these parameters using sampling points on a regular Cartesian grid is, in general, significantly more efficient than using random points. This finding is different from other published results. The choice of grid size for sampling was analyzed according to the AAPM recommended uncertainty on the dose delivered to the patient. It was concluded that when grid sampling is used, a grid size of 0.5 cm is adequate for most plans to meet the guidelines.

引用

页码：151 / 161

页数：11

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