A framework for assumption-free assessment of imperfect geometry of a linac C-arms
arXiv:1711.11002 · doi:10.1007/s00006-018-0873-8
Abstract
In the present paper a general setup for determination of imperfect geometry of radiotherapeutic devices has been proposed that base on geometric algebra framework. To account for this imperfect geometry, two methods of a calibration were presented, consisting of determining for each angular position of a gantry a correction shift which must be applied to the origin of a laboratory frame of reference to place it along a radiation axis for this angular position. Closed form solutions for these corrections are provided.
17 pages, 6 figures