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Cancers 2015, 7(3), 1143-1153; doi:10.3390/cancers7030829

Tumour Movement in Proton Therapy: Solutions and Remaining Questions: A Review

1
Department of Oncology, Experimental Radiation Oncology, KU Leuven-University of Leuven, B-3000 Leuven, Belgium
2
Center of Molecular Imaging, Radiotherapy and Oncology, Institut de Recherche Expérimentale et Clinique, Université Catholique de Louvain, B-1200 Brussels, Belgium
*
Author to whom correspondence should be addressed.
Academic Editor: Xiaodong Zhang
Received: 1 February 2015 / Revised: 10 June 2015 / Accepted: 18 June 2015 / Published: 29 June 2015
(This article belongs to the Special Issue Proton Therapy for Cancer)
View Full-Text   |   Download PDF [130 KB, uploaded 29 June 2015]

Abstract

Movement of tumours, mostly by respiration, has been a major problem for treating lung cancer, liver tumours and other locations in the abdomen and thorax. Organ motion is indeed one component of geometrical uncertainties that includes delineation and target definition uncertainties, microscopic disease and setup errors. At present, minimising motion seems to be the easiest to implement in clinical practice. If combined with adaptive approaches to correct for gradual anatomical variations, it may be a practical strategy. Other approaches such as repainting and tracking could increase the accuracy of proton therapy delivery, but advanced 4D solutions are needed. Moreover, there is a need to perform clinical studies to investigate which approach is the best in a given clinical situation. The good news is that existing and emerging technology and treatment planning systems as will without doubt lead in the forthcoming future to practical solutions to tackle intra-fraction motion in proton therapy. These developments may also improve motion management in photon therapy as well. View Full-Text
Keywords: tumour movement; proton therapy; adaptive radiotherapy tumour movement; proton therapy; adaptive radiotherapy
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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De Ruysscher, D.; Sterpin, E.; Haustermans, K.; Depuydt, T. Tumour Movement in Proton Therapy: Solutions and Remaining Questions: A Review. Cancers 2015, 7, 1143-1153.

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