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Health Physics

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https://www.readbyqxmd.com/read/29135537/status-and-perception-of-risk-management-in-radiation-therapy-survey-among-korean-medical-physicists
#1
Sohyun Ahn, Dong Oh Shin, Sang Hyoun Choi, Jihye Koo, Soon Sung Lee, Dong-Wook Park, Yoon-Jin Oh, Sohyun Park, Dong Wook Kim
This study was conducted as part of an endeavor to improve the risk management system of radiation therapy departments in the Republic of Korea. An online survey on the status and perception of Korea's medical physicists on risk management in radiation therapy was carried out. A total of 40 domestic radiation oncology departments participated. This survey is divided into three categories: (1) work environment; (2) risk management status; and (3) opinions on how to improve risk management. Based on the results of the survey, the conclusions that can be derived are (1) the majority of respondents have a high interest in the risk management of radiation therapy; (2) the lack of staffing is one cause of risk management difficulties; (3) a risk-related terminology and classification system at the national or professional association level are required; (4) each hospital should create a voluntary reporting system for the handling of incidents; (5) medical physicists should establish incident reporting, analysis and countermeasures; and (6) government should develop education and training programs...
November 10, 2017: Health Physics
https://www.readbyqxmd.com/read/29135536/investigating-uranium-isotopic-ratios-and-activity-ratios-in-groundwaters-in-the-state-of-idaho
#2
Levan Tkavadze, Richard R Brey, John Dudgeon
Analyzing uranium isotopic and activity ratios can give valuable information for hydrologic and environmental studies such as insights to weathering processes, estimating water mixing ratios, and identifying water sources. The authors employed an inductively coupled plasma mass spectrometer (ICP-MS) to perform environmental level concentration measurements of isotopic uranium on 380 groundwater samples from various locations within the state of Idaho. The U:U uranium activity ratios (UAR) for these samples range between 0...
November 10, 2017: Health Physics
https://www.readbyqxmd.com/read/29049048/urinary-excretion-of-yttrium-90-after-radioembolization-with-yttrium-90-labeled-resin-based-microspheres
#3
Oliver S Grosser, Juri Ruf, Annette Pethe, Dennis Kupitz, Heiko Wissel, Christoph Benckert, Maciej Pech, Jens Ricke, Holger Amthauer
In radioembolic therapy (RET) of hepatic malignancies using yttrium-90 (Y)-labeled resin microspheres, radiation protection is primarily concerned with avoiding contamination by radioactive spheres. However, as Y is bound to the microsphere surface by a potentially reversible ion-exchange process, the aim of this study was to assess the extent of the potential excreted activity in urine. After RET with Y-labeled resin-based microspheres, urinary excretion of free Y was prospectively analyzed in 51 interventions (n = 45 patients) by sampling urine over 48 h (two 24-h intervals) consecutively...
October 18, 2017: Health Physics
https://www.readbyqxmd.com/read/29049047/analysis-of-radionuclide-deposition-ratios-from-the-fukushima-daiichi-incident
#4
C M Marianno, M R Smith, K M Cook
This paper will examine deposition patterns of four radionuclides following the Fukushima-Daiichi accident. For nearly 13 d following the event, fission products were released into the environment through planned venting procedures and hydrogen explosions. To assist the government of Japan (GOJ) in the assessment of the releases, the National Nuclear Security Administration's Consequence Management Response Team (CMRT) deployed and took nearly 3 mo of measurements using airborne radiation sensors, fixed monitors, high purity germanium (HPGe) detectors, and health physics survey equipment...
October 18, 2017: Health Physics
https://www.readbyqxmd.com/read/28990969/dosimetry-in-radiosynoviorthesis-90y-vs-153sm
#5
Mirta Barbara Torres Berdeguez, Sylvia Thomas, Susie Medeiros, Lidia Vasconcellos de Sá, Felix Mas Milian, Ademir Xavier da Silva
Although there are several radionuclides suitable for radiosynoviorthesis (RSO), not all of them can irradiate deeper synovium. Yttrium-90 (Y) is the beta radionuclide with more penetration range; therefore, it is predominantly used to treat knees. The aim of this paper is to highlight several dosimetry concepts to compare Y and Sm, also discussing the feasibility of implementing a dose planning methodology for both in RSO. The MCNPX Monte Carlo nuclear code version 2.6 was used for calculating S-values from which the activity to be injected into the joint was obtained...
October 5, 2017: Health Physics
https://www.readbyqxmd.com/read/29112623/health-physics-society-%C3%A2-2017-affiliate-members
#6
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112621/the-role-of-extracellular-fluid-in-biokinetic-modeling
#7
Guthrie Miller, John A Klumpp, Dunstana Melo, Deepesh Poudel
The pharmacokinetic equations of Pierson et al. describing the behavior of bromide in rat provide a general approach to the modeling of extracellular fluid (ECF). The movement of material into ECF spaces is rapid and is completely characterized by tissue volumes and vascular flow rates to and from a tissue, the volumes of the tissue, and the ECF associated with the tissue. Early-time measurements are needed to characterize ECF. Measurements of DTPA disappearance from plasma by Wedeking et al. are discussed as an example of such measurements...
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112620/evaluation-of-the-accuracy-of-polymer-gels-for-determining-electron-dose-distributions-in-the-presence-of-small-heterogeneities
#8
R Ghahraman Asl, H A Nedaie, N Banaee
The aim of this study is to evaluate the application and accuracy of polymer gels for determining electron dose distributions in the presence of small heterogeneities made of bone and air. Different cylindrical phantoms containing MAGIC (Methacrylic and Ascorbic acid in Gelatin Initiated by Copper) normoxic polymer gel were used under the slab phantoms during irradiation. MR images of the irradiated gel phantoms were obtained to determine their R2 (spin-spin) relaxation maps for conversion to absorbed dose...
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112619/2017-american-academy-of-health-physics-awards
#9
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112618/2017-student-fellowships
#10
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112617/2017-student-travel-grant-recipients
#11
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112616/2017-chapter-volunteer-award
#12
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112615/2017-military-health-physics-section-awards
#13
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112614/2017-homeland-security-section-service-award-allen-brodsky
#14
Kenneth Groves
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112613/2017-honorees-as-fellows-of-the-health-physics-society
#15
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112612/2017-50-year-members
#16
(no author information available yet)
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112611/2017-honor-roll-award-jeffrey-a-leavey
#17
Mark Linsley
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112610/2017-honor-roll-award-kenneth-eger
#18
Myra P Long
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112609/2017-honor-roll-award-david-p-alberth
#19
Tanya Palmateer Oxenberg, Gerald A Falo
No abstract text is available yet for this article.
December 2017: Health Physics
https://www.readbyqxmd.com/read/29112608/2017-elda-e-anderson-award-jason-davis
#20
Wade Adams
No abstract text is available yet for this article.
December 2017: Health Physics
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