Evaluation of the Independent Dose Calculation Algorithm

被引：0

作者：

Laurikaitiene, J. ^{[1
,2
]}

Laurikaitis, M. ^{[1
]}

Adliene, D. ^{[2
]}

Adlys, G. A. ^{[2
]}

Raila, S. ^{[2
]}

Nordstrom, J. ^{[3
]}

Back, S. ^{[3
]}

Mansson, S. ^{[3
]}

机构：

[1] Kaunas Med Univ Hosp, Oncol Hosp, Volungiu G 16, Kaunas, Lithuania

[2] Kaunas Univ Technol, Dept Phys, Kaunas, Lithuania

[3] Malmo Univ Hosp, Univ Lund, Dept Radiat Phys, Malmo, Sweden

来源：

14TH NORDIC-BALTIC CONFERENCE ON BIOMEDICAL ENGINEERING AND MEDICAL PHYSICS | 2008年 / 20卷

关键词：

Radiotherapy; Co-60; source; dose calculation; dose verification;

D O I：

暂无

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The results of the implementation of Radiotherapy Verification Program based on the application of the completely independent from TPS algorithm for dose calculations in checking of patient's treatment plans are presented in this paper. Algorithm includes calculation of the absorbed dose from photons scattered in the patient, calculation of the primary kerma transmission in the patient, calculation of the primary kerma variation in the air with collimator settings, and corrections for heterogeneities in the patient. The results include checks of the dose plans of 90 patients performed in the clinical routine work. It is shown, that the dose deviation between TPS and RVP is shifted towards positive side, indicating non normal distribution. Deviations vary in the interval from -4 % to +8%, with a median value of +2.97 % and standard deviation of 1.99. After the installation of the verification program estimated findings in the dose plans, calculated using old 2D planning system, were serious enough to show the inefficiency of the old system and to stop its operation.

引用

页码：574 / +

页数：2

共 8 条

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