EP-1790 TPS out of field dose accuracy: impact on dose volume histogram calculation of pacemaker devices

Dose Calculation Accuracy of Radiotherapy Treatment Planning Systems in Out-of-Field Regions

Assessment of out-of-field dose calculation algorithm by commercial treatment planning systems in IMRT and 3DCRT

Abstract Introduction: The accuracy an assessment of out- of- field dose due to secondary cancer risk is clinically important. Actually radiotherapy treatment planning systems are not commissioned for the out-of-field dose calculations, so the estimation of dose distributions by TPSs beyond the borders of treatment fields is not well calculate...

Dose-volume histogram prediction using density estimation.

Knowledge of what dose-volume histograms can be expected for a previously unseen patient could increase consistency and quality in radiotherapy treatment planning. We propose a machine learning method that uses previous treatment plans to predict such dose-volume histograms. The key to the approach is the framing of dose-volume histograms in a probabilistic setting.The training consists of esti...

the impact of phonetic transcription on iranian intermediate efl learners’ pronunciation accuracy

این تحقیق به منظور یافتن تاثیر آموزش آوا نگاری انگلیسی بر روی صحت تلفظ زبان آموزان سطح متوسط ایرانی صورت گرفت.برای دستیابی به دو گروه متجانس, از110 زبان آموز در حال یادگیری زبان در اموزشگاه ها ازمون opt گرفته شد. بنابراین 40 نفر از این افراد انتخاب و به دو گروه 20 تایی تقسیم شدند.درنهایت این نتیجه حاصل شد که آموزش آوانگاری انگلیسی تاثیر مثبتی بر صحت تلفظ زبان آموزان سطح متوسط ایرانی داشته است. ...

Assessment of Dose Calculation Accuracy of TiGRT Treatment Planning System for Physical Wedged fields in Radiotherapy

Introduction Wedge modifiers are commonly applied in external beam radiotherapy to change the dose distribution corresponding to the body contour and to obtain a uniform dose distribution within the target volume. Since the radiation dose delivered to the target must be within ±5% of the prescribed dose, accurate dose calculation by a treatment planning system (TPS) is important. The objective ...