EP-1304 What is the benefit of using more beams and/or non-coplanar beams in breast PBS proton therapy?
نویسندگان
چکیده
منابع مشابه
Accelerated partial-breast irradiation using proton beams: initial clinical experience.
PURPOSE We present our initial clinical experience with proton, three-dimensional, conformal, external beam, partial-breast irradiation (3D-CPBI). METHODS AND MATERIALS Twenty patients with Stage I breast cancer were treated with proton 3D-CPBI in a Phase I/II clinical trial. Patients were followed at 3 to 4 weeks, 6 to 8 weeks, 6 months, and every 6 months thereafter for recurrent disease, c...
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Particle beams like protons and heavier ions offer improved dose distributions compared with photon (also called x-ray) beams and thus enable dose escalation within the tumor while sparing normal tissues. Although protons have a biologic effectiveness comparable to photons, ions, because they are heavier than protons, provide a higher biologic effectiveness. Recent technologic developments in t...
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Background: The assessment of RBE quantity in the treatment of cancer tumors with proton beams in treatment planning systems (TPS) is of high significance. Given the significance of the issue and the studies conducted in the literature, this quantity is fixed and is taken as equal to 1.1.Objective: The main objective of this study was to assess RBE quantity of proton beams and their variations ...
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We review the present understanding of beam halo in proton linacs. Space-charge forces acting in mismatched beams have been identified as a major cause of beamhalo. We introduce a new description of the halo using the ratio of moments of the distribution of beam coordinates. We describe the beam-halo experiment that is in preparation at Los Alamos, which will address questions about the beam pr...
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The emission characteristics of intense laser driven protons are controlled using ultrastrong (of the order of 10(9) V/m) electrostatic fields varying on a few ps time scale. The field structures are achieved by exploiting the high potential of the target (reaching multi-MV during the laser interaction). Suitably shaped targets result in a reduction in the proton beam divergence, and hence an i...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2019
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(19)31724-4