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Full-Text Articles in Physics
Volumetric Scintillation Dosimetry For Scanned Proton Beams, Daniel G. Robertson
Volumetric Scintillation Dosimetry For Scanned Proton Beams, Daniel G. Robertson
Dissertations & Theses (Open Access)
Scanned beam proton therapy is a promising cancer treatment modality which is becoming more widely available with the increasing number of proton radiotherapy centers. Scanned proton beams can produce complex 3D dose distributions, presenting a challenge for adequate quality assurance testing. Because each scanned beam dose measurement requires the delivery of the entire field, multiple measurements can be time consuming. These quality assurance challenges limit the number of patients who can be treated with this modality. The overall objective of this project is to increase the safety and availability of complex proton therapy treatments by developing a fast volumetric scintillation …
Image-Guided Proton Therapy For Online Dose-Evaluation And Adaptive Planning, Joey P. Cheung
Image-Guided Proton Therapy For Online Dose-Evaluation And Adaptive Planning, Joey P. Cheung
Dissertations & Theses (Open Access)
The main advantage for using protons in radiotherapy is their finite range in patients, allowing for potential improved sparing of normal tissues. However, this comes at a cost of increased sensitivity to range uncertainties. Density changes along the beam path will affect the proton range and the resultant dose distribution, making it difficult to estimate the impact of visible anatomic changes to the patient dose distribution. In order to better understand the effect of anatomy change on proton dose, some form of treatment-time verification is required and methods to correct for observed changes would be beneficial. Therefore, this project aims …