Results 71 to 80 of about 7,188,407 (346)

Semi‐automated hippocampal avoidance whole‐brain radiotherapy planning

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background Hippocampal avoidance whole‐brain radiotherapy (HA‐WBRT) is designed to spare cognitive function by reducing radiation dose to the hippocampus during the treatment of brain metastases. Current manual planning methods can be time‐consuming and may vary in quality, necessitating the development of automated approaches to streamline ...
Dong Joo Rhee, Subha Perni, Kelly J. Perrin, Kevin E. Casey, Alexandra O. Leone, Callistus M. Nguyen, Laurence E. Court, He Wang, Xin Wang, Eun Young Han   +9 more
wiley   +1 more source

THE MYSTERY OF THE COSMIC DIFFUSE ULTRAVIOLET BACKGROUND RADIATION [PDF]

, 2014
The diffuse cosmic background radiation in the Galaxy Evolution Explorer far-ultraviolet (FUV, 1300–1700 Å) is deduced to originate only partially in the dust-scattered radiation of FUV-emitting stars: the source of a substantial fraction of the FUV ...
R. Henry, Jayant Murthy, J. Overduin, J. Tyler   +3 more
semanticscholar   +1 more source

Risk analysis of the Unity 1.5T MR‐Linac adapt‐to‐shape workflow

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background and Purpose The adapt‐to‐shape (ATS) workflow on the Unity MR‐Linac (Elekta AB, Stockholm, Sweden) allows for full replanning including recontouring and reoptimization5. Additional complexity to this workflow is added when the adaptation involves the use of MIM Maestro (MIM Software, Cleveland, OH) software in conjunction with ...
Jiayi Liang, Eric Aliotta, Neelam Tyagi, Paola Godoy Scripes, Nicolas Côté, Ergys Subashi, Qijie Huang, Lian Sun, Ching‐Yun Chan, Angela Ng, Theresa Wunner, Victoria Brennan, Kaveh Zakeri, James Mechalakos   +13 more
wiley   +1 more source

Log file‐based quality assurance method for respiratory gating system

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background As medical linear accelerator technology advances, enabling higher dose rate deliveries, hypofractionation regimens has increased. This necessitates respiratory gating systems that synchronize radiation delivery with tumor position, requiring simple rigorous quality assurance (QA) to ensure treatment accuracy and patient safety ...
Wonjoong Cheon, Young Kyu Lee, Yunji Seol, Chan‐beom Park, Hong Qi Tan, Kyu Hye Choi, Young‐nam Kang, Byung Ock Choi   +7 more
wiley   +1 more source

Evaluating feature extraction reproducibility across image biomarker standardization initiative‐compliant radiomics platforms using a digital phantom

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Background The aim of this study was to thoroughly analyze the reproducibility of radiomics feature extraction across three Image Biomarker Standardization Initiative (IBSI)‐compliant platforms using a digital phantom for benchmarking. It uncovers high consistency among common features while also pointing out the necessity for standardization ...
Han‐Back Shin, Heesoon Sheen, Jang‐Hoon Oh, Young Eun Choi, Kihoon Sung, Hyun Ju Kim   +5 more
wiley   +1 more source

RADIATION SAFETY OF BULGARIA IN THE CONTEMPORARY INTERNATIONAL SITUATION

Security and Defence Quarterly, 2016
It is known that everything on our planet is subjected to constant exposure from the natural and anthropogenic, earth and space SIR, and is situated in conditions created by natural and technical radioactive Backlight.
Nikolay Todorov DOLCHINKOV
doaj   +1 more source

The edge visualization metric: Quantifying the improvement of lung SBRT target definition with 4D CBCT

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose Four‐dimensional cone‐beam CT (4D CBCT) incorporates oversampling of 3D data to reconstruct multi‐phase CBCT data sets representing distinct phases of the breathing cycle based on a diaphragmatic correlate of respiratory motion. Motion artifacts and blurring can be reduced relative to three‐dimensional cone‐beam (3D CBCT), allowing ...
Colton Baley, Sam Andersen, Clark Anderson, Shraddha Dalwadi, Daniel L. Saenz   +4 more
wiley   +1 more source

OUTDOOR GAMMA RADIATION MEASURMENT IN ORDER TO ESTIMATE THE ANNUAL EFFECTIVE DOSE AND EXCESS LIFETIME CANCER RISK FOR RESIDENTS OF TEHRAN, IRAN

Journal of Air Pollution and Health, 2017
Introduction: Gamma ray radiation can cause ionization and harmful effects on human health due to its high levels of energy. However, contrary to popular belief, natural sources of gamma radiation are far greater in number than artificial sources.
Akbar Eslami, Abbas Shahsavani, Mohammad Hossein Saghi, Leila Akhoondi, Ali Goorani   +4 more
doaj  

Professor John Roderick Cameron’s Influence on Radiation Safety in Terrestrial and Space Environments [PDF]

Journal of Biomedical Physics and Engineering
Professor John Roderick Cameron (1922–2005) stands out as a trailblazer in the field of medical physics, whose innovative work has deeply influenced radiation protection and the broader medical radiation field through sound technical judgment and insight.
Joseph John Bevelacqua, Seyed Ali Reza Mortazavi, Seyed Mohammad Javad Mortazavi, James Welsh   +3 more
doaj   +1 more source

Diffuse Extragalactic Background Radiation

AIP Conference Proceedings, 2008
Attenuation of high--energy gamma rays by pair--production with UV, optical and IR background photons provides a link between the history of galaxy formation and high--energy astrophysics. We present results from our latest semi-analytic models (SAMs), based upon a $ $CDM hierarchical structural formation scenario and employing all ingredients thought
Joel R. Primack, Rudy C. Gilmore, Rachel S. Somerville, Felix A. Aharonian, Werner Hofmann, Frank Rieger   +5 more
openaire   +3 more sources