Thursday morning - Poster Presentations - Screen4
- Oleg Belyakov (IAEA)
Olga Galvan (Instituto Nacional de Neurologia y Neurocirugia)
6/22/17, 10:30 AM
**Introduction** The measurement of the dose on the surface of a patient in radiotherapy treatments is a useful parameter for a quality assurance protocol. The surface dose can be associated to the skin dose, or entrance dose depending on the depth at which the measurement is done. The very high gradient of the percentage depth dose makes difficult to define the point of measurement for any...
130. Normal tissue complication probability calculation in normal and hypo-fractionated radiotherapy of head & neck tumors
Carlos Fabian Calderon Marin (Oncology and Radiobiology Institute (INOR))
6/22/17, 10:35 AM
Although radiobiological modeling has a lot of promise in clinical applications it is still an investigational tool. The linear-quadratic (LQ) formalism is the tool most commonly used for quantitative predictions of dose/fractionation. Hypo-fractionation requires consistent iso-effect dose calculations and the LQ formalism is appropriate for treatments with this dosing scheme. Nevertheless...
132. Radiobiological modeling and treatment planning for sequential and concurrent combination of internal and external radiotherapy modalities
Carlos Fabián Calderón Marín (Oncology and Radiobiology Institute (INOR))
6/22/17, 10:40 AM
The use of therapeutic schemes combining external beams radiotherapy (ERT) with internal radiotherapy (IRT) using radiopharmaceuticals could be a promising alternative for patients with multiple lesions or those where treatment planning maybe difficult to fulfill the organ(s)-at-risk (OARs) dose constraints. Since the temporal and spatial patterns and levels of dose delivering are different,...
248. Toxicity of radical radiotherapy with or without chemotherapy in HIV positive and negative women treated for locally advanced cervical cancer
Joseph Brown Mugambe Kigula (Mulago National Referral Hospital)
6/22/17, 10:45 AM
Introduction WHO has reported 85% of cervical cancers occurring in low resource settings. It is the commonest cancer in women in many regions worst hit by the HIV/AIDS. Combined chemotherapy and radiotherapy (CRT) is the standard of care for women with cervical cancer in the developed world but the gains from CRT come at the cost of increased toxicity. Only a few data is available regarding...
304. Implementation of the IAEA-TECDOC-1583 with IMRT and VMAT test plans as a dosimetric verification for AAA and Acuros XB algorithms using heterogeneous phantom
Ahmad Nobah (King Faisal Specialist Hospital & Research Centre)
6/22/17, 10:50 AM
Purpose: To compare the dosimetric performance of anisotropic analytical algorithm (AAA), Acuros XB Dose-To-Water (AXB-Dw), and Acuros XB Dose-To-Medium (AXB-Dm) in heterogeneous phantoms following the test cases recommended by the IAEA-TECDOC-1583, a set of IMRT and VMAT test cases were also included to cover all clinically used techniques. Methods and Materials: A collection of 15 clinical...
321. Development and refinement of the canadian national system for incident reporting in radiation treatment (NSIR-RT)
John Kildea (McGill University Health Centre)
6/22/17, 10:55 AM
**1 Introduction** Incident reporting, investigation and learning are core elements of quality improvement in radiation treatment. A programmatic approach to learning from one’s mistakes, and the free exchange of this information with others on a regional, national or international scale, has the potential to improve patient safety by preventing incident recurrence or propagation,...