Health Physics Society Affiliate Members
No abstract available (Source: Health Physics)
Source: Health Physics - May 22, 2022 Category: Radiology Tags: Health Physics Society Affiliate Members Source Type: research

Health Physics Society Prospectus
No abstract available (Source: Health Physics)
Source: Health Physics - May 22, 2022 Category: Radiology Tags: Health Physics Society Prospectus Source Type: research

Abstracts - 67th annual meeting of the health physics society • 17-21 july 2022 • spokane, wa
No abstract available (Source: Health Physics)
Source: Health Physics - May 22, 2022 Category: Radiology Tags: SPECIAL SUBMISSION Source Type: research

Response to Rice et al.
No abstract available (Source: Health Physics)
Source: Health Physics - May 22, 2022 Category: Radiology Tags: CORRESPONDENCE Source Type: research

Comment on “World Atmospheric CO2, Its 14C Specific Activity, Non-fossil Component, Anthropogenic Fossil Component, and Emissions (1750–2018)” (Skrable et al. 2022)
No abstract available (Source: Health Physics)
Source: Health Physics - May 22, 2022 Category: Radiology Tags: CORRESPONDENCE Source Type: research

Particle Size-dependent Dissolution of Uranium Aerosols in Simulated Lung Fluid: A Case Study in a Nuclear Fuel Fabrication Plant
Inhalation exposure to uranium aerosols can be a concern in nuclear fuel fabrication. The ICRP provides default absorption parameters for various uranium compounds but also recommends determination of material-specific absorption parameters to improve dose calculations for individuals exposed to airborne radioactivity. Aerosol particle size influences internal dosimetry calculations in two potentially significant ways: the efficiency of particle deposition in the various regions of the respiratory tract is dependent on aerodynamic particle size, and the dissolution rate of deposited materials can vary according to particle...
Source: Health Physics - May 22, 2022 Category: Radiology Tags: PAPERS Source Type: research

Understanding the Radiation Soaking Effect in Neutron Survey Instruments
The drift in response of neutron survey meters that employ moderated 3He and BF3 proportional counters has been reported and investigated by instrument calibration laboratories for over 20 y. When within a constant radiation rate field of high intensity, dose rate readings of an instrument may steadily increase with a rate proportional to the field intensity before reaching a relatively stable plateau. This phenomenon, commonly referred to as the radiation soaking effect, has been attributed to the accumulation of charge on insulating surfaces inside the detector. This paper provides results of a study specifically conduct...
Source: Health Physics - May 22, 2022 Category: Radiology Tags: PAPERS Source Type: research

Static MLC transmission simulation using two-dimensional ray tracing
CONCLUSION: The MLC transmission curve properties determined by this study have implications both for MLC position calibrations and modeling within TPSs. Two-dimensional ray tracing can be utilized to identify where simple behaviors hold, and where they deviate. These results can help clinical physicists engage with vendors to improve MLC models, subsequent fluence calculations, and hence dose calculation accuracy.PMID:35596533 | DOI:10.1002/acm2.13646 (Source: Health Physics)
Source: Health Physics - May 21, 2022 Category: Physics Authors: David P Adam Bryan P Bednarz Sean P Frigo Source Type: research

X-ray computerized tomography observation of Lycopodium paste incorporating memory of shaking
Phys Rev E. 2022 Apr;105(4-1):044902. doi: 10.1103/PhysRevE.105.044902.ABSTRACTIn a uniform layer consisting of a mixture of granular material and liquid, it is known that desiccation cracks exhibit various anisotropic patterns that depend on the nature of the shaking that the layer experienced before drying. The existence of this effect implies that information regarding the direction of shaking is retained as a kind of memory in the arrangements of granular particles. In this work we make measurements in paste composed of Lycopodium powder using microfocus x-ray computerized tomography (μCT) in order to investigate the ...
Source: Health Physics - May 20, 2022 Category: Physics Authors: So Kitsunezaki Akihiro Nishimoto Tsuyoshi Mizuguchi Yousuke Matsuo Akio Nakahara Source Type: research

A computational study on the adsorption of arsenic pollutants on graphene-based single-atom iron adsorbents
Phys Chem Chem Phys. 2022 May 20. doi: 10.1039/d1cp02170b. Online ahead of print.ABSTRACTIntegrated gasification combined cycle (IGCC) is a promising clean technology for coal power generation; however, the high volatility and toxicity of arsenic pollutants (As2, As4, AsO and AsH3) released from an IGCC coal plant cause serious damage to human health and the ecological environment. Therefore, highly efficient adsorbents for simultaneous treatment of multiple arsenic pollutants are urgently needed. In this work, the adsorption characteristics and competitive adsorption behaviors of As2, As4, AsO, and AsH3 on four kinds of g...
Source: Health Physics - May 20, 2022 Category: Physics Authors: Kai Ma Di Zheng Weijie Yang Chongchong Wu Shuai Dong Zhengyang Gao Xiaojun Zhao Source Type: research

Sigmoid model analysis of breast dynamic contrast-enhanced MRI: Distinguishing between benign and malignant breast masses and breast cancer subtype prediction
This study aimed to verify whether the existing breast DCE-MRI analyzed by the sigmoid model can accurately distinguish between benign and invasive ductal carcinoma (IDC) and predict the subtype. A total of 154 patients who underwent breast MRI for detailed breast mass examinations were included in this study (38 with benign masses and 116 with IDC. The sigmoid model involved the acquisition of images at seven timepoints in 1-min intervals to determine the change in signal intensity before and after contrast injection. From this curve, the magnitude of the increase in signal intensity in the early phase, the time to reach ...
Source: Health Physics - May 20, 2022 Category: Physics Authors: Norikazu Koori Tosiaki Miyati Naoki Ohno Hiroko Kawashima Hiroko Nishikawa Source Type: research

Clinical and Ergonomic Comparison Between a Robotic Assisted Transfer Device and a Mobile Floor Lift During Caregiver-Assisted Wheelchair Transfers
CONCLUSIONS: The robotic assisted transfer device provides additional benefits to mobile floor lifts which, coupled with statistically lower flexion, extension, and rotation, may make them an appealing alternative intervention.PMID:35594407 | PMC:PMC9123282 | DOI:10.1097/PHM.0000000000001867 (Source: Health Physics)
Source: Health Physics - May 20, 2022 Category: Physics Authors: Mark Greenhalgh Eline Blaauw Nikitha Deepak Matthew St Laurent Rosemarie Cooper Roxanna Bendixen Garrett G Grindle Alicia M Koontz Rory A Cooper Source Type: research

IDAC-Bio, A Software for Internal Dosimetry Based on the New ICRP Biokinetic Models and Specific Absorbed Fractions
Health Phys. 2022 May 20. doi: 10.1097/HP.0000000000001571. Online ahead of print.ABSTRACTRadiation dosimetry is central to virtually all radiation safety applications, optimization, and research. It relates to various individuals and population groups and to miscellaneous exposure situations-including planned, existing, and emergency situations. The International Commission on Radiological Protection (ICRP) has developed a new computational framework for internal dose estimations. Important components are more detailed and improved anatomical models and more realistic biokinetic models than before. The ICRP is currently p...
Source: Health Physics - May 20, 2022 Category: Physics Authors: Martin Andersson Richard W Leggett Keith Eckerman Anja Alm én S ören Mattsson Source Type: research

Implications of Recent Epidemiological Studies for Compensation of Veterans Exposed to Plutonium
The objective of this paper is to compare post-2007 epidemiological results for plutonium workers to risk predicted by the software program NIOSH-IREP (IREP for short), which is used to determine the lowest dose for a US veteran to obtain cancer compensation. IREP output and methodology were used to predict excess relative risk per Gy (ERR Gy-1) for lung cancer at the 99th credibility percentile, which is used for compensation decisions. Also estimated were relative biological effectiveness factors (RBE) predicted for workers using IREP methodology. IREP predictions were compared to results for Mayak and Sellafield plutoni...
Source: Health Physics - May 20, 2022 Category: Physics Authors: Jan Beyea Source Type: research

Reproducibility, construct validity and responsiveness of the Tetraplegia Upper Limb Activities Questionnaire, TUAQ. Part 2.: Psychometric testing of TUAQ
CONCLUSION: TUAQ demonstrates good psychometric properties for reliability and agreement for persons with tetraplegia and responsiveness and construct validity for surgical reconstruction of hand function for persons with tetraplegia. The TUAQ appears appropriate to be used as a patient reported outcome measure for clinical and research purposes in this population.PMID:35595067 | DOI:10.1016/j.apmr.2022.05.001 (Source: Health Physics)
Source: Health Physics - May 20, 2022 Category: Physics Authors: Johanna Wangdell Bridget Hill Jennifer A Dunn Source Type: research