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

By Andreas Böhler

In this thesis, a monitoring process was once built by way of enhancing an add-on collimator, the Siemens Moduleaf, for realtime purposes in radiotherapy. because the add-on collimator works nearly thoroughly autonomously of the linear accelerator (LinAc), no differences to the latter have been valuable. The variations to the Moduleaf have been frequently software-based. on the way to lessen the complexity of the method, outmoded digital components have been changed with more recent elements the place practical.

Verification was once played through measuring the latency of the procedure in addition to the effect on utilized dose to a predefined aim quantity, relocating within the leaf's trip course. Latency measurements in software program have been finished through evaluating the objective and present positions of the leaves. For dose measurements, a Gafchromic EBT2 movie used to be positioned underneath the objective 4D phantom, in among sturdy water plates, and moved along with it.

Based at the effects, a tracking-capable add-on collimator looks a useful gizmo for decreasing the margins for the therapy of small, slow-moving targets.

Radiotherapy is likely one of the most crucial tools used for the therapy of melanoma. Irradiating a relocating goal is additionally some of the most difficult projects to complete in glossy radiotherapy.

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Read or Download Collimator-Based Tracking with an Add-On Multileaf Collimator: Modification of a commercial collimator system for realtime applications PDF

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