نتایج جستجو برای: iaea

تعداد نتایج: 1089  

Journal: :Physics in medicine and biology 2016
Hugo Palmans Stanislav M Vatnitsky

We comment on a recent article (Gomà et al 2014 Phys. Med. Biol. 59 4961-71) which compares different routes of reference dosimetry for the energy dependent beam monitor calibration in scanned proton beams. In this article, a 3% discrepancy is reported between a Faraday cup and a plane-parallel ionization chamber in the experimental determination of the number of protons per monitor unit. It is...

2007
N. Ramamoorthy

The serendipitous discovery of Tc generator at the BNL, USA in 1957 laid the foundation for the subsequent revolution of in vivo imaging of physiological functions in humans to aid diagnostic decisions and patient management. The widespread use of diagnostic imaging in nuclear medicine would not have attained a pre-eminent status world over but for the Tc generator and Tc labelled products. In ...

2007

On 13 September 1987, a shielded, strongly radioactive caesium-137 medical source was removed from its housing in a teletherapy machine. Tne machine had been left in a clinic abandoned by the Instituto Goiano de Radioterapia in Goiania, the capital of the State of Goias in Central Brazil. By 18 September, the source assembly had been broken out of its protective shielding and sold to a scrap me...

2009

Foreword The Insect Pest Control sub-programme of the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture has worked for many years on developing the sterile insect technique (SIT) for tsetse fly control. A standard rearing system was developed twenty years ago that allowed the rearing of sufficient flies for research, development and small field operations, such as the BICOT ...

2017
Stephanie Leon

Mobile fluoroscopy (c-arm) units offering 3D image reconstruction are becoming more common in surgical settings. Although these images are "CT-like" and sometimes replace the postoperative CT, the acquisition is technically very different from a traditional CT acquisition. Dose assessment is complicated by a large beam width, automatic exposure rate control, and a rotation of less than 360°. Th...

2008
K. Uhlir M. Griesser G. Buzanich P. Wobrauschek C. Streli D. Wegrzynek A. Markowicz E. Chinea-Cano

1 Conservation Science Department, Kunsthistorisches Museum, Burgring 5, A-1010 Vienna, Austria 2 Atomic Institute (ATI), Vienna University of Technology, Stadionallee 2, A-1020 Vienna, Austria 3 Agency’s Laboratories Seibersdorf, International Atomic Energy Agency (IAEA), Reaktorstrasse 1, A-2444 Seibersdorf, Austria 4 Faculty of Physics and Applied Computer Science, AGH University of Science ...

Journal: :Onkologiâ i radiologiâ Kazahstana 2023

Relevance: The article deals with modern problems in the field of ensuring quality services provided on linear accelerators from point view regulatory framework, as well frequency control procedures. scientific novelty lies elaborating a accelerator program detailed procedure descriptions and testing recommendations.
 study aimed to – develop test set simple methods for controlling acceler...

Journal: :Brazilian Archives of Biology and Technology 2023

HIGHLIGHTS Using date seed powder as Alternative for yeast in rearing of peach fruit fly, Bactrocera zonata. Date provide insects quality parameters corresponding to FAO, IAEA/USDA standards. costs less than yeast.

Journal: :Acta oncologica 2014
Eduard Gershkevitsh Csilla Pesznyak Borislava Petrovic Joseph Grezdo Krzysztof Chelminski Maria do Carmo Lopes Joanna Izewska Jacob Van Dyk

BACKGROUND AND PURPOSE One of the newer audit modalities operated by the International Atomic Energy Agency (IAEA) involves audits of treatment planning systems (TPS) in radiotherapy. The main focus of the audit is the dosimetry verification of the delivery of a radiation treatment plan for three-dimensional (3D) conformal radiotherapy using high energy photon beams. The audit has been carried ...

Journal: :Brazilian Journal of Radiation Sciences 2021

According to the International Atomic Energy Agency (IAEA), lessons learned (LL) in a radiation accident are extremely important building of learning about accidents, identifying best practices and preventing new accidents from occurring – making that if they do, damage could be mitigated. Thereby, it was noted problems identified analysis led adoption series measures make facilities safer more...

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