A framework for assumption-free assessment of imperfect geometry of a linac C-arms

29 Nov 2017  ·  Kycia R. A., Tabor Z., Woszczyna A., Kabat D., Latała Z., Tulik M. ·

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. read more

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Medical Physics