000009141 001__ 9141 000009141 005__ 20240124114318.0 000009141 0247_ $$2DOI$$a10.6083/n583xv729 000009141 037__ $$aETD 000009141 245__ $$aQuality assurance testing evaluation and comparison for magnetic resonance simulator and non-simulator magnetic resonance imaging modalities 000009141 260__ $$bOregon Health and Science University 000009141 269__ $$a2021 000009141 336__ $$aThesis 000009141 502__ $$bM.S. 000009141 520__ $$aMagnetic Resonance (MR) Imaging is imperative to radiation therapy (RT) treatment planning and is used to delineate tumor volumes and normal tissue structures. MR images are susceptible to many sources of significant geometric uncertainties that reduce the geometric fidelity of the image ultimately limiting its application in radiation medicine. The Magnetic Resonance Simulator (MR-SIM) has been shown to reduce setup related uncertainties and is approved for MR-only treatment planning in specific anatomical sites. Stricter Quality Assurance (QA) testing regimens and tolerance for an MR-SIM have recently been published by the American Association of Physicists in Medicine (AAPM) Task Group (TG) 284. Altered QA testing for an MR-SIM, as suggested by TG-284, has not been compared to that performed for a standard diagnostic MR system. 000009141 650__ $$aMagnetic Resonance Imaging$$021747 000009141 6531_ $$ahealthcare quality assurance 000009141 691__ $$aSchool of Medicine$$041369 000009141 7001_ $$aBuatti, Jacob S. 000009141 8564_ $$997af5e77-3698-42f0-863d-41cb1d5edec4$$s2732774$$uhttps://digitalcollections.ohsu.edu/record/9141/files/Buatti.Jacob.2021.pdf 000009141 905__ $$a/rest/prod/n5/83/xv/72/n583xv729 000009141 909CO $$ooai:digitalcollections.ohsu.edu:9141$$pstudent-work 000009141 980__ $$aTheses and Dissertations