On Usability of Gamma Criteria Distribution for Evaluation of Field-in-Field Treatment Plans in Conformal Radiotherapy

Riga Technical University 53rd International Scientific Conference: Dedicated to the 150th Anniversary and the 1st Congress of World Engineers and Riga Polytechnical Institute / RTU Alumni: Digest 2012
Alvis Bernāns, Aleksejs Kataševs

Hard, dynamic or virtual wedges are often used in conformal radiation therapy to reduce dose inhomogeneity within the target volume. There are restrictions exist in using such field modifiers for large fields due to technical peculiarities of the treatment machine. Field-in-field (FIF) manual segmentation, where one or more subfields are used to achieve dose homogeneity, could solve this problem, but such technique needs to be evaluated and verified first. FIF technique is based on intensity modulated radiation therapy (IMRT) principle, except that the intensity modulation is done manually using direct planning. The aim of this article is to determine whether the gamma criterion evaluation principle is suitable for FIF plans verification.

Atslēgas vārdi
field in field, gamma criterion, radiotherapy, verification, IMRT

Bernāns, A., Kataševs, A. On Usability of Gamma Criteria Distribution for Evaluation of Field-in-Field Treatment Plans in Conformal Radiotherapy. No: Riga Technical University 53rd International Scientific Conference: Dedicated to the 150th Anniversary and the 1st Congress of World Engineers and Riga Polytechnical Institute / RTU Alumni: Digestem>, Latvija, Riga, 11.-12. oktobris, 2012. Riga: Riga Technical University, 2012, 705.-705.lpp. ISBN 9789934103605.

Publikācijas valoda
English (en)