In most clinical situations, the purpose of radiotherapy is to apply high doses to the target volume as well as protection of the organs at risk from the side effects of radiation. Because of biological reason, radiation is usually performed as a fractionated therapy, which requires reproducibility precise immobilization of the patient and positioning of the radiation isocenter in the correct localization in relation to the tumor geometry before each treatment, enabling the reduction of the "safety margin" around the target volume as much as possible. Uncertainties in immobilization and positioning lead to difficulties in establishing high-precision-techniques such as IMRT (Intensity Modulated Radiation Therapy). This overview discusses IGRT (Image Guided Radiotherapy) techniques and position verification techniques. We also analyzed the accuracy of commercially available head mask systems, using true 3D/3D matching, with X-ray volume imaging and cone-beam CT. Copyright © 2007 by new Magazine edizioni s.r.l.
Image guided radiotherapy with the Synergy Experience of Mannheim / Boda-Heggemann, J.; Scheda, A.; Wertz, H.; Loeb, I.; Rahn, A.; Walter, C.; Lohr, F.; Wenz, F.. - In: RIVISTA MEDICA. - ISSN 1127-6339. - 13:1(2007), pp. 269-271.
Image guided radiotherapy with the Synergy Experience of Mannheim
Lohr F.;
2007
Abstract
In most clinical situations, the purpose of radiotherapy is to apply high doses to the target volume as well as protection of the organs at risk from the side effects of radiation. Because of biological reason, radiation is usually performed as a fractionated therapy, which requires reproducibility precise immobilization of the patient and positioning of the radiation isocenter in the correct localization in relation to the tumor geometry before each treatment, enabling the reduction of the "safety margin" around the target volume as much as possible. Uncertainties in immobilization and positioning lead to difficulties in establishing high-precision-techniques such as IMRT (Intensity Modulated Radiation Therapy). This overview discusses IGRT (Image Guided Radiotherapy) techniques and position verification techniques. We also analyzed the accuracy of commercially available head mask systems, using true 3D/3D matching, with X-ray volume imaging and cone-beam CT. Copyright © 2007 by new Magazine edizioni s.r.l.
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