{"product_id":"collimator-based-tracking-with-an-add-on-multileaf-collimator-modification-of-a-commercial-collimator-system-for-realtime-applications-von-andreas-bohler","title":"Collimator-Based Tracking with an Add-On Multileaf Collimator","description":"\n                                \n                \u003cp\u003eIn this thesis, a tracking system was developed by modifying an add-on collimator, the Siemens Moduleaf, for realtime applications in radiotherapy. As the add-on collimator works almost completely autonomously of the linear accelerator (LinAc), no modifications to the latter were necessary. The adaptations to the Moduleaf were mainly software-based. In order to reduce the complexity of the system, outdated electronic parts were replaced with newer components where practical.\u003c\/p\u003e\n                                \n                \u003cp\u003eVerification was performed by measuring the latency of the system as well as the impact on applied dose to a predefined target volume, moving in the leaf's travel direction. Latency measurements in software were accomplished by comparing the target and current positions of the leaves. For dose measurements, a Gafchromic EBT2 film was placed beneath the target 4D phantom, in between solid water plates, and moved alongside with it.\u003c\/p\u003e\n                                \n                \u003cp\u003eBased on the results, a tracking-capable add-on collimator seems to be a useful tool for reducing the margins for the treatment of small, slow-moving targets.\u003c\/p\u003e\n                                \n                \u003cp\u003eRadiotherapy is one of the most important methods used for the treatment of cancer. Irradiating a moving target is also one of the most challenging tasks to accomplish in modern radiotherapy.\u003c\/p\u003e\n                            \n            \u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783658106577\"\u003e\u003ch3\u003eModification of a commercial collimator system for realtime applications\u003c\/h3\u003e\u003c\/div\u003e","brand":"Libri","offers":[{"title":"Softcover - 9783658106577","offer_id":39447571005533,"sku":"9783658106577","price":53.49,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/a7c65427-6eda-4452-9a99-e3fa8a99f431.jpg?v=1771998703","url":"https:\/\/shop.autorenwelt.de\/products\/collimator-based-tracking-with-an-add-on-multileaf-collimator-modification-of-a-commercial-collimator-system-for-realtime-applications-von-andreas-bohler","provider":"Autorenwelt Shop","version":"1.0","type":"link"}