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Are dose calculations during dose optimization in brachytherapy necessary?

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National Technical University of Athens   

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Are dose calculations during dose optimization in brachytherapy necessary? (EN)
Baltas, D (EN)
Lahanas, M (EN)
journalArticle (EN)
2014-03-01T01:18:41Z
2003 (EN)
We consider the problem of anatomy based dose optimization in brachytherapy. A calculation method for some objective functions and their derivatives is proposed which significantly reduces the number of required operations. The optimization in some cases, ignoring a preprocessing step, is independent of the number of sampling points. The idea is that some of the objectives and their derivatives used for dose optimization do not require the explicit calculation of dose values. Dose optimization with the new modified computation method for the objectives and derivatives is, depending on the number of sampling points, up to 100 times faster than the conventional method with dose calculation. (C) 2003 American Association of Physicists in Medicine. (EN)
Radiology, Nuclear Medicine & Medical Imaging (EN)
calculation (EN)
dosimetry (EN)
Humans (EN)
Optimization algorithms (EN)
technique (EN)
Male (EN)
Radiation Protection (EN)
Prostatic Neoplasms (EN)
Computer Simulation (EN)
Sensitivity and Specificity (EN)
Dose Fractionation (EN)
Radiometry (EN)
Brachytherapy (EN)
brachytherapy (EN)
priority journal (EN)
Radiotherapy Planning, Computer-Assisted (EN)
Radiotherapy Dosage (EN)
Reproducibility of Results (EN)
Risk Assessment (EN)
Models, Statistical (EN)
Organ Specificity (EN)
article (EN)
Sample Size (EN)
Algorithms (EN)
mathematical computing (EN)
Models, Biological (EN)
mathematical model (EN)
Medical Physics (EN)
English
AMER ASSOC PHYSICISTS MEDICINE AMER INST PHYSICS (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
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