Results 51 to 60 of about 2,730 (174)

Occupational radiation exposure to the lens of the eyes and its protection during endoscopic retrograde cholangiopancreatography

Scientific Reports, 2023
This study aimed to examine occupational radiation exposure to the lens of the eyes during endoscopic retrograde cholangiopancreatography (ERCP). In this multicenter, prospective, observational cohort study, we collected data regarding occupational ...
Kenji Ikezawa, Shiro Hayashi, Mamoru Takenaka, Takayuki Yakushijin, Koji Nagaike, Ryoji Takada, Takuo Yamai, Kengo Matsumoto, Masashi Yamamoto, Shunsuke Omoto, Kosuke Minaga, Shuji Ishii, Takeshi Shimizu, Kengo Nagai, Makoto Hosono, Tsutomu Nishida   +15 more
doaj   +1 more source

Local diagnostic reference levels for pediatric fluoroscopy in a Brazilian tertiary referral center: A weight‑based analysis

Journal of Applied Clinical Medical Physics, Volume 27, Issue 3, March 2026.
Abstract Purpose To establish the first DRLs for contrast‐enhanced diagnostic pediatric fluoroscopic procedures in Brazil, stratified by body weight, based on data collected in a single tertiary referral public hospital of Rio de Janeiro city. Methods This descriptive, cross‐sectional study included 928 diagnostic fluoroscopy examinations performed in ...
Claudia M. C. Ribeiro, Tainá O. Chaves, Marcos Decnop, Renato Gonçalves de Mendonça, Margareth Catoia Varela, Cesar Augusto Viana de Araujo, Saint Clair Gomes Junior   +6 more
wiley   +1 more source

Radiation dose and risk assessment in hysterosalpingography [PDF]

Nuclear Technology and Radiation Protection, 2010
Hysterosalpingography is an important diagnostic method for the evaluation of the female reproductive tract involving the exposure of patients to ionizing radiation.
Plećaš Darko V., Živković Monika M., Ciraj-Bjelac Olivera F.   +2 more
doaj   +1 more source

Radiation Risk in 2D Mammography Screening: A Scoping Review of Modelling Strategies and Emerging AI Applications

Journal of Medical Radiation Sciences, Volume 73, Issue 1, Page 7-18, March 2026.
This scoping review examined models estimating long‐term radiation risks from repeated mammography screening. While modelling indicates the risks are low, approaches vary by protocol and vendor. Emerging AI tools show promise for improving personalised risk estimation, though further development is needed for cross‐platform compatibility.
Nazli A. Moda, Mo'ayyad E. Suleiman, Sahand Hooshmand, Warren M. Reed   +3 more
wiley   +1 more source

An Analysis of Acquisition Dose in Male Mammography

Journal of Medical Radiation Sciences, Volume 73, Issue 1, Page 52-59, March 2026.
This retrospective study analysed 266 male breast imaging acquisitions across two Australian hospital sites, comparing radiation doses from full‐field digital mammography (FFDM) and digital breast tomosynthesis (DBT). DBT doses were significantly higher than FFDM, while FFDM glandular doses were lower than previously reported male and female cohorts ...
Zechary Ng, Maeve Masterson, Daniel Carrion, Mohamed K. Badawy   +3 more
wiley   +1 more source

An Approach to Establishing Diagnostic Reference Levels in Interventional Pediatric Cardiology from Different Regions of Brazil

Children
Diagnostic reference levels (DRLs) are a pivotal strategy to be implemented since pediatric interventional cardiology procedures are increasing. This work aimed to propose an initial set of Brazilian DRLs for pediatric interventional diagnostic and ...
Viviane K. Asfora, Marcelo B. Freitas, Regina B. Medeiros, Hugo R. Schelin, Akemi Yagui, Marcus V. L. Oliveira, Luiz M. S. A. Leite, Guillermo A. Lopez, Maryanna R. S. Roberto, Fabio L. Gagetti, Pablo H. O. Souza, Bruna Vargas, Valeriy V. Denyak, Helen J. Khoury   +13 more
doaj   +1 more source

Methodology study for determining the half-value layer using the Monte Carlo code PHITS

Brazilian Journal of Radiation Sciences
For most purposes, the quality of a beam can be specified in terms of the half-value layer (HVL), which is the thickness of material required to reduce the air kerma  to half, at one meter from the source, from a unidirectional beam of infinitesimal ...
Ronald Soares, Marco Aurélio Lacerda
doaj   +1 more source

Radiation dose estimation of patients undergoing lumbar spine radiography

Journal of Medical Physics, 2013
Radiation dose to organs of 100 adult patients undergoing lumbar spine (LS) radiography at a University Hospital have been assessed. Free in air kerma measurement using an ionization chamber was used for the patient dosimetry. Organ and effective dose to
Prince Kwabena Gyekye, Adu Simon, Emi-Reynolds Geoffrey, Yeboah Johnson, Inkoom Stephen, Cynthia Kaikor Engmann, Wotorchi-Gordon Samuel   +6 more
doaj   +1 more source

Influence of radiotherapy dose rate on gold nanoparticle‐induced radiosensitization from high dose‐rate brachytherapy and external beam therapy

Medical Physics, Volume 53, Issue 3, March 2026.
Abstract Background Associated normal tissue toxicity from current radiotherapy (RT) treatments limits effective dose escalation in the tumor to achieve nominal treatment results. Gold nanoparticles (GNPs) as radiosensitizing agents to locally increase photoelectron production have gained interest as a safe and viable method to improve therapeutic ...
Daniel Cecchi, Nolan Jackson, Sacha Freeman, Kieren O'Neil, Mehran Goharian, Wayne Beckham, Devika B. Chithrani   +6 more
wiley   +1 more source

Comparison of the hypothetical 57 Co brachytherapy source with the 192 Ir source

Contemporary Oncology, 2016
Aim of the study : The 57 Co radioisotope has recently been proposed as a hypothetical brachytherapy source due to its high specific activity, appropriate half-life (272 days) and medium energy photons (114.17 keV on average).
Mohammad Taghi Bahreyni Toossi, Mahdi Ghorbani, Atefeh Rostami, Mohsen Khosroabadi, Sara Khademi, Courtney Knaup   +5 more
doaj   +1 more source