Institutional Patient-specific IMRT QA Does Not Predict Unacceptable Plan Delivery
نویسندگان
چکیده
منابع مشابه
Reproducibility in patient‐specific IMRT QA
The purpose of this study was to determine the reproducibility of patient-specific, intensity-modulated radiation therapy (IMRT) quality assurance (QA) results in a clinical setting. Six clinical patient plans were delivered to a variety of devices and analyses, including 1) radiographic film; 2) ion chamber; 3) 2D diode array delivered and analyzed in three different configurations (AP deliver...
متن کاملConfidence limits for patient‐specific IMRT dose QA: a multi‐institutional study in Korea
This study aims to investigate tolerance levels for patient-specific IMRT dose QA (DQA) using the confidence limits (CL) determined by a multi-institutional study. Eleven institutions participated in the multi-institutional study in Korea. A total of 155 DQA measurements, consisting of point-dose differences (high- and low-dose regions) and gamma passing rates (composite and per-field) for IMRT...
متن کاملCharacterization of cylindrical ionization chambers for patient specific IMRT QA
Proven conventional dosimetry techniques do not provide accuracy and precision in the measurement of inverse planned intensity modulated radiation therapy (IMRT) fields. Dynamic and step-and-shoot multileaf collimation (DMLC/SMLC) challenge current ionization chamber dosimetry practices. Ionization chamber performance in these fields is evaluated for three cylindrical chambers of varying volume...
متن کاملIMRT QA using machine learning: A multi‐institutional validation
PURPOSE To validate a machine learning approach to Virtual intensity-modulated radiation therapy (IMRT) quality assurance (QA) for accurately predicting gamma passing rates using different measurement approaches at different institutions. METHODS A Virtual IMRT QA framework was previously developed using a machine learning algorithm based on 498 IMRT plans, in which QA measurements were perfo...
متن کاملSU-E-T-163: Reproducibility in the Field of Patient-Specific IMRT QA.
PURPOSE To analyze the reproducibility of patient specific IMRT QA results across five different clinical devices and one in-house detector by quantifying variations in the QA results from delivery-to-delivery (without re-setup, "redelivery") and variations when set-up is repeated ("re-setup"). METHODS Six patient plans were selected from among four treatment sites. Six methods of IMRT QA wer...
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ژورنال
عنوان ژورنال: International Journal of Radiation Oncology*Biology*Physics
سال: 2014
ISSN: 0360-3016
DOI: 10.1016/j.ijrobp.2014.08.334