Thursday afternoon - Poster Presentations - Screen2
- Oleg Belyakov (IAEA)
Stefan Odreitz-Stark (LKH Univ. Klinikum Graz, Dept. of Therapeutic Radiology and Oncology)
6/22/17, 3:30 PM
Introduction: For the exact measurement of dose with an ionisation cahmber in radiotherapy it is essential to have knowledge of the dose per pulse (DPP) of the radiation beam and the saturation correction factor kS of the chamber with respect to the DPP. There are several methods for the determination of kS (i.e. Jaffé diagrams, 2 voltage methods with different formulas and a theoretical...
64. Conversion of measured percentage depth dose to Tissue maximum ratio values in the small fields: Is it worth?
Ehab Attalla (Children’s Cancer Hospital, National Cancer Institute, Cairo University, Cairo, Egypt)
6/22/17, 3:35 PM
Abstract: The goal is to find if there were clear differences between the direct measurement of TMR and that calculated from PDD. The dedicated 6-MV and 10-MV treatments were delivered on Siemens (Siemens Medical Solutions, Malvern, PA) ONCOR Expression linear accelerator with an 82 multi-leaf collimator (MLC)-based Stereotactic radiosurgery and radiotherapy (SRS/SRT) is used in Children’s...
Saad Attawneh (King Hussein Cancer Center)
6/22/17, 3:40 PM
Purpose: phantom scatter, Sp, is an important factor needed to calculate dose in media. It is affected by small beam dosimetry, in a similar way as collimator scatter, Sc, with the added layer of media (density) effect. Our work is geared towards finding a simple model for calculating Sp for small beams in various media. The results were verified by comparing calculated Sp vs measured Sp in an...
Zakithi Lungile Mpumelelo Msimang (National Metrology Institute of South Africa (NMISA) and Wits University)
6/22/17, 3:45 PM
Introduction ------------ Developments in radiotherapy have contributed to an increase in the use of small fields. Small fields are used in stereotactic treatments and large uniform or non-uniform fields that are composed of small fields such as for intensity modulated radiation therapy (IMRT). There has been an increasing availability in the clinic of standard, mini and micro-multileaf...
Thomas Konrad (LKH Univ Klinikum Graz, Dept. of Therapuetic Radiology and Oncology)
6/22/17, 3:50 PM
Introducion: Usually, neither treatment planning systems (TPS) nor water phantom related software is capable of comparing measured and calculated data by means of dose difference or gamma index. Microsoft Excel is an option, but for a large amount of data analysis can become quite cumbersome. For this reson we created a software called “Eclipse Analysis Tool with Pinnacle Extension” (EAT...
Supriyanto Pawiro (Universitas Indonesia)
6/22/17, 3:55 PM
Peripheral Dose of Moving Target Simulation using In-House Dynamic Thorax Phantom S.A. Pawiro1, V. Arif1, A. Nainggolan2, M. Mukhlisin3, D.S. Soejoko1 Purpose The aims of this study were to explain the interplay effect at peripheral dose characteristics of target and organ at risk for target movement. Materials and Method This work was performed at MRCCC Siloam Hospital using...