Open AccessVerification and correction of geometrical uncertainties in conformal radiotherapy
Author(s) -
Dušan Mileusnić
Publication year - 2005
Publication title -
archive of oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.104
H-Index - 13
eISSN - 1450-9520
pISSN - 0354-7310
DOI - 10.2298/aoo0504140m
Subject(s) - random error , systematic error , computer science , set (abstract data type) , motion (physics) , process (computing) , conformal map , algorithm , calculus (dental) , mathematics , artificial intelligence , geometry , statistics , medicine , orthodontics , programming language , operating system
Geometrical errors are presented as deviation between intended geometry of radiotherapy plan and real geometry of radiotherapy treatment. Total geometrical error is build up of smaller errors, which can be generally classified as set-up, organ motion, organ delineation, and technical condition related errors. The clear distinction must be made between systematic and random component of these errors and its amount should be encountered in treatment planning process. Errors’ measuring for specific patient group with electronic portal imaging device and proper correction strategy enables to predict, minimize, and keep under control the amount for most of geometrical errors; it also improves the preciseness of treatment and consequent results. Nature and characteristics of most frequent geometrical errors are discussed and clinically applicable methods for their proper managing are described in this paper