Download Collimator-Based Tracking with an Add-On Multileaf by Andreas Böhler PDF

By Andreas Böhler

In this thesis, a monitoring approach used to be constructed by way of enhancing an add-on collimator, the Siemens Moduleaf, for realtime functions in radiotherapy. because the add-on collimator works virtually thoroughly autonomously of the linear accelerator (LinAc), no ameliorations to the latter have been worthy. The diversifications to the Moduleaf have been usually software-based. to be able to decrease the complexity of the method, superseded digital elements have been changed with more recent elements the place practical.

Verification used to be played by means of measuring the latency of the method in addition to the impression on utilized dose to a predefined objective quantity, relocating within the leaf's commute path. Latency measurements in software program have been comprehensive through evaluating the objective and present positions of the leaves. For dose measurements, a Gafchromic EBT2 movie was once positioned underneath the objective 4D phantom, in among strong water plates, and moved along with it.

Based at the effects, a tracking-capable add-on collimator appears to be like a great tool for lowering the margins for the remedy of small, slow-moving targets.

Radiotherapy is likely one of the most crucial tools used for the remedy of melanoma. Irradiating a relocating goal can also be some of the most not easy projects to complete in smooth radiotherapy.

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