Essays about: "ımrt"
Showing result 6 - 10 of 21 essays containing the word ımrt.
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6. System for dose audit for external radiation therapy based on EPR dosimetry with Lithium Formate
University essay from FysikumAbstract : Radiation therapy is an important method to treat cancer with the aim to deliver as high doses as reasonably achievable to the tumor while protecting the surrounding healthy tissue and organs at risk, OARs. Therefore, it is essential to have high accuracy in the dose delivered clinically and quality assurances are required. READ MORE
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7. Dosimetric and geometric evaluation of MRI as the only imaging modality for the radiotherapy treatment process of localized prostate cancer
University essay from Lunds universitet/SjukhusfysikerutbildningenAbstract : Introduction MRI provides better soft tissue contrast than CT and is an invaluable tool in the radiotherapy treatment process. The gold standard today is image fusion of MRI and CT data where targets and organs-at-risk are delineated on the MRI data and the dose calculation is performed on the CT data. READ MORE
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8. Patient-specifc quality assurance for helical tomotherapy An evaluation of two different detector systems
University essay from Lunds universitet/SjukhusfysikerutbildningenAbstract : Intensity-modulated radiation therapy (IMRT) has during the recent years become a frequently used technique in radiotherapy. Lately IMRT has also been combined with rotational beam delivery, with a simultaneously moving couch, a technique called tomotherapy. READ MORE
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9. Evaluation of gantry angle optimization for IMRT treatment planning systems using the Pareto front approach
University essay from Lunds universitet/SjukhusfysikerutbildningenAbstract : Introduction; The aim of this study was to examine the possibilities for MRI-based radiotherapy treatment planning. The work included evaluation of geometric image distortions in MR-images, investigations of how segmentation of bone could be performed from images acquired with the ultra short time of echo (UTE) pulse sequence and assessment of dosimetric differences between treatment planning based on these images as compared to the original CT-based treatment plans. READ MORE
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10. Evaluation of SharePlan
University essay from Lunds universitet/SjukhusfysikerutbildningenAbstract : Introduction: SharePlanTM is a new type of treatment planning system produced by RaySearch Laboratories AB for TomoTherapy Inc. SharePlan enables transfer of treatment plans generated with the TomoTherapy Hi∙Art® system to plans deliverable at conventional linacs. READ MORE
