EP-2149: A priori scatter correction of clinical conebeam CTs to enable on-line proton dose calculations
نویسندگان
چکیده
منابع مشابه
A new approach to scatter correction in SPECT images based on Klein_Nishina equation
Introduction: Scattered photon is one of the main defects that degrade the quality and quantitative accuracy of nuclear medicine images. Accurate estimation of scatter in projection data of SPECT is computationally extremely demanding for activity distribution in uniform and non-uniform dense media. Methods: The objective of this paper is to develop and validate a scatter correction technique ...
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Proton therapy is a common form of external radiation therapy based on the manipulation of Bragg peak of this beam, it can treat the tumor by delivering high levels of doses to it, while protecting surrounding healthy tissues against radiation. In this work, the dose distribution of proton and secondary particles such as neutrons, photons, electrons and positrons in gastric cancer proton therap...
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BACKGROUND The purpose of the study was the clinical implementation of a kV cone beam CT (CBCT) for setup correction in radiotherapy. PATIENTS AND METHODS For evaluation of the setup correction workflow, six tumor patients (lung cancer, sacral chordoma, head-and-neck and paraspinal tumor, and two prostate cancer patients) were selected. All patients were treated with fractionated stereotactic...
متن کاملPROTON DOSE CALCULATIONS IN HOMOGENEOUS MEDIA A Thesis
ii ACKNOWLEDGMENTS In order to complete this study, a substantial amount of background theory beyond the traditional Medical Physics curriculum was necessary. I am grateful to Dr. Kenneth Hogstrom for providing additional instruction in these areas and recognize that I am fortunate to have learned this material from a prominent expert in this field. I also owe a large debt of gratitude to my ve...
متن کاملa new approach to scatter correction in spect images based on klein_nishina equation
introduction: scattered photon is one of the main defects that degrade the quality and quantitative accuracy of nuclear medicine images. accurate estimation of scatter in projection data of spect is computationally extremely demanding for activity distribution in uniform and non-uniform dense media. methods: the objective of this paper is to develop and validate a scatter correction technique ...
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ژورنال
عنوان ژورنال: Radiotherapy and Oncology
سال: 2018
ISSN: 0167-8140
DOI: 10.1016/s0167-8140(18)32458-7