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In the context of radiosurgery -pros and cons of rescanning as a solution for treating moving targets with scanned particle beams-

Authors
Journal
Physica Medica
1120-1797
Publisher
Elsevier
Volume
30
Issue
5
Identifiers
DOI: 10.1016/j.ejmp.2014.03.010
Keywords
  • Radiosurgery
  • Hypo-Fractionated Treatment
  • Target Motion
  • Scanned Particle Beams
  • Rescanning
Disciplines
  • Medicine

Abstract

Abstract The treatment of mobile targets with scanned particle beams is challenging, and the effects of motion will be especially pronounced in hypo-fractionated treatment regimes due to the lack of statistical smoothing through fractionation and the prolonged delivery times per session. Therefore, motion mitigation techniques will play a major role for radiosurgery approaches. This article concentrates on the motion mitigation technique called rescanning. It alludes the existence of many scanning/rescanning flavors and raises awareness of the importance of an optimized flavor choice. Furthermore, it is discussed that rescanning can compensate for the lack of statistical wash-out, target dose conformity, however, will remain degraded. Therefore, especially in the context of radiosurgery, rescanning should be combined with other motion mitigation techniques like breath hold, gating and/or tracking.

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