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Quantifying and Improving Error Sensitivity of Intensity Modulated Radiation Therapy Quality Assurance
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Quantifying and Improving Error Sensitivity of Intensity Modulated Radiation Therapy Quality Assurance. |
| 개인저자 | Steers, Jennifer Mariah. |
| 단체저자명 | University of California, Los Angeles. Biomedical Physics 0119. |
| 발행사항 | [S.l.]: University of California, Los Angeles., 2018. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2018. |
| 형태사항 | 364 p. |
| 기본자료 저록 | Dissertation Abstracts International 79-10B(E). Dissertation Abstract International |
| ISBN | 9780438021310 |
| 학위논문주기 | Thesis (Ph.D.)--University of California, Los Angeles, 2018. |
| 일반주기 |
Source: Dissertation Abstracts International, Volume: 79-10(E), Section: B.
Advisers: Daniel A. Low |
| 요약 | Purpose: To quantify and elucidate factors affecting error sensitivity in current IMRT QA comparisons performed with the gamma comparison, to investigate causes for gamma comparison insensitivity, and to utilize these results to develop and vali |
| 요약 | Methods: Over 20,000 gamma comparisons were performed for three detector geometries -- ArcCHECK, MapCHECK, and Delta 4 -- for a variety of IMRT and VMAT cases in the presence of induced errors. Differences in error sensitivity for each device ge |
| 요약 | Results: Differences in gamma comparison error sensitivity were observed for the ArcCHECK, MapCHECK, and Delta 4 geometries when removing the effects of different spatial sampling for each device. While sensitivity was error type-specific for mo |
| 요약 | A new method, gradient-dose segmented analysis (GDSA) was developed to allow more clinically meaningful and sensitive IMRT QA comparisons. This method segments the comparison points into regions of high-gradient, high-dose low-gradient, and low- |
| 요약 | Conclusions: A variety of measurement scenarios were considered in controlled calculation-only comparisons that suggest device-specific and delivery technique-specific gamma criteria may be appropriate in order to achieve similar sensitivity in |
| 일반주제명 | Nuclear physics and radiation. Applied physics. Medicine. |
| 언어 | 영어 |
| 바로가기 | 
: 이 자료의 원문은 한국교육학술정보원에서 제공합니다. |
