Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"Passive scattering"”.
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Development and Implementation of An Anthropomorphic Pediatric Spine Phantom For The Assessment of Craniospinal Irradiation Procedures In Proton Therapy
… of the phantom were acquired and used to create passive scattering and spot scanning treatment plans. Each plan was delivered three times at a dose of 6 Gy. The following attributes were evaluated: absolute dose agreement, distal range, field width, junction match and right/left dose profile …
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Determination of energy spectra of proton therapy beams
… Centre. The method is based on proton elastic scattering, H(p,p)H, in a thin polyethylene radiator and uses two ΔE-E detector telescopes to detect coincident proton pairs. Measurements have been made to investigate the effect of standard beam modification elements on the energy spectra of …
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Verification of The Clinical Implementation of The Respiratory Gated Beam Delivery Technique With Synchrotron-Based Proton Irradiation
… the respiratory gating technique in both passive scattering and scanning delivery mode. Our hypothesis for the study was that optimization of the parameters of synchrotron operation and respiratory gating can lead to greater efficiency and accuracy of respiratory gating for all modes of …
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The Development and Implementation of An Anthropomorphic Head Phantom For The Assessment of Proton Therapy Treatment Procedures
… phantom material. Two treatment plans, proton passive scattering and proton spot scanning, were created. Thermoluminescent dosimeters (TLDs) and film were loaded into the phantom dosimetry insert. Each treatment plan was delivered three separate times. Each treatment plan passed our 5%/3mm …
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Radiogenic Second Cancer Risk Differences In Female Hodgkin Lymphoma Patients Treated With Proton Versus Photon Radiotherapies
… using Monte Carlo techniques that model a passive scattering treatment nozzle and each individual patient’s anatomy and treatment setup. RSC risks were calculated using the Biological Effects of Ionizing Radiation VII (BEIR VII) and Radiation Risk Assessment Tool (RadRAT) risk models. …
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Interferometry with higher-dimensional gauge-symmetric optical multiports
… constituents of any interferometric system: the passive scattering centers--such as beam-splitters or other material distributions--which redistribute the energy carried by incident photons, and the phase delays that freely propagating photons experience between pairs of these scattering centers. …