Pub Date : 2018-09-30DOI: 10.14407/JRPR.2018.43.3.120
Ji-Yeon Song, Hana Seo, Sung-Hwan Kim, Jung-Youn Choi
Background: Analysis of enrichment of UO2 is important to verify the information declared by the license-holders. The redundancy methods are required to guarantee the analysis result. Korea Institute of Nuclear Nonproliferation and Control (KINAC) used to analyze it with alpha spectrometry and consign to Korea Basic Science Institute (KBSI) Thermal Ionization Mass Spectrometry (TIMS). This article evaluated the similarity of the results with two methods and derive correlation equation. It could be compared to the results measured by TIMS running by KBSI.
{"title":"Uranium Enrichment Comparison of UO2 Pellet with Alpha Spectrometry and TIMS","authors":"Ji-Yeon Song, Hana Seo, Sung-Hwan Kim, Jung-Youn Choi","doi":"10.14407/JRPR.2018.43.3.120","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.3.120","url":null,"abstract":"Background: Analysis of enrichment of UO2 is important to verify the information declared by the license-holders. The redundancy methods are required to guarantee the analysis result. Korea Institute of Nuclear Nonproliferation and Control (KINAC) used to analyze it with alpha spectrometry and consign to Korea Basic Science Institute (KBSI) Thermal Ionization Mass Spectrometry (TIMS). This article evaluated the similarity of the results with two methods and derive correlation equation. It could be compared to the results measured by TIMS running by KBSI.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72674781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-30DOI: 10.14407/JRPR.2018.43.3.107
V. Mhatre, P. Chadha, Abhaya P Kumar, K. Talapatra
Materials and Methods: A retrospective study was conducted for 5 TN patients who had been previously treated at our institution using frame-based, LINAC-based stereotactic radiosurgery (SRS) on Novalis Tx using 6 MV SRS beam were replanned on 6X FFF beams on Edge Linear accelerator with same beam angles and dose constraints using 4 mm conical collimator. The total number of monitor units along with the beam on time was compared for both Edge and Novalis Tx by redelivering the plans in QA mode of LINAC to compare the delivery efficiency. Plan quality was evaluated by homogeneity index (HI) and Paddick gradient index (GI) for each plan. We also analyzed the doses to brainstem and organ at risks (OARs).
{"title":"Dosimetric Comparison of 6 MV Flattening Filter Free and 6 MV Stereotactic Radiosurgery Beam Using 4 mm Conical Collimator for Trigeminal Neuralgia Radiosurgery","authors":"V. Mhatre, P. Chadha, Abhaya P Kumar, K. Talapatra","doi":"10.14407/JRPR.2018.43.3.107","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.3.107","url":null,"abstract":"Materials and Methods: A retrospective study was conducted for 5 TN patients who had been previously treated at our institution using frame-based, LINAC-based stereotactic radiosurgery (SRS) on Novalis Tx using 6 MV SRS beam were replanned on 6X FFF beams on Edge Linear accelerator with same beam angles and dose constraints using 4 mm conical collimator. The total number of monitor units along with the beam on time was compared for both Edge and Novalis Tx by redelivering the plans in QA mode of LINAC to compare the delivery efficiency. Plan quality was evaluated by homogeneity index (HI) and Paddick gradient index (GI) for each plan. We also analyzed the doses to brainstem and organ at risks (OARs).","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81328094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-30DOI: 10.14407/JRPR.2018.43.3.85
Young-Yong Ji, Taehyung Lim, Wanno Lee
Background: A variety of inorganic scintillators have been developed and improved for use in radiation detection and measurement, and in situ gamma-ray spectrometry in the environment remains an important area in nuclear safety. In order to verify the feasibility of promising scintillators in an actual environment, a performance test is necessary to identify gamma-ray peaks and calculate the radioactivity from their net count rates in peaks.
{"title":"In Situ Gamma-ray Spectrometry Using an LaBr3(Ce) Scintillation Detector","authors":"Young-Yong Ji, Taehyung Lim, Wanno Lee","doi":"10.14407/JRPR.2018.43.3.85","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.3.85","url":null,"abstract":"Background: A variety of inorganic scintillators have been developed and improved for use in radiation detection and measurement, and in situ gamma-ray spectrometry in the environment remains an important area in nuclear safety. In order to verify the feasibility of promising scintillators in an actual environment, a performance test is necessary to identify gamma-ray peaks and calculate the radioactivity from their net count rates in peaks.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74263673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-09-30DOI: 10.14407/JRPR.2018.43.3.114
Myung-Jin Kim, Ki-Bum Kim, D. Hong
Materials and Methods: The quartz sample from a volcanic rock of Japan was used. After correcting the thermal quenching effect, RTL peaks of quartz were separated by the CGCD method cooperated with the general order kinetics. The number of overlapped glow peaks were ascertained by the Tm-Tstop method. The optical sensitivity was examined by comparing the change of intensity on RTL glow peaks measured after exposure to light from a solar simulator with various illumination times.
{"title":"Optical Sensitivity of TL Glow Peaks Separated Using Computerized Glow Curve Deconvolution for RTL Quartz","authors":"Myung-Jin Kim, Ki-Bum Kim, D. Hong","doi":"10.14407/JRPR.2018.43.3.114","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.3.114","url":null,"abstract":"Materials and Methods: The quartz sample from a volcanic rock of Japan was used. After correcting the thermal quenching effect, RTL peaks of quartz were separated by the CGCD method cooperated with the general order kinetics. The number of overlapped glow peaks were ascertained by the Tm-Tstop method. The optical sensitivity was examined by comparing the change of intensity on RTL glow peaks measured after exposure to light from a solar simulator with various illumination times.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84428883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-06-30DOI: 10.14407/JRPR.2018.43.2.75
A. El-kateb
Results and Discussion: The γ-ray spectra vary according to changes in the effective atomic number Zeff of the attenuator, the photon energy and the solid angle. The peak to total ratios are the most sensitive parts to variations in the experimental conditions and overturn in the region 0.663 MeV to 1.332 MeV. This is indicated as inversion trend. The results are discussed in view of Zeff and the experimental conditions. The intensity build-up is larger at the lower energy and larger scattering angles in agreement with Klein-Nishina formula and other results. The buildup factor B is 1 at high γ-energies and small scattering angles.
{"title":"Broad Beam Gamma-Ray Spectrometric Studies with Environmental Materials","authors":"A. El-kateb","doi":"10.14407/JRPR.2018.43.2.75","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.2.75","url":null,"abstract":"Results and Discussion: The γ-ray spectra vary according to changes in the effective atomic number Zeff of the attenuator, the photon energy and the solid angle. The peak to total ratios are the most sensitive parts to variations in the experimental conditions and overturn in the region 0.663 MeV to 1.332 MeV. This is indicated as inversion trend. The results are discussed in view of Zeff and the experimental conditions. The intensity build-up is larger at the lower energy and larger scattering angles in agreement with Klein-Nishina formula and other results. The buildup factor B is 1 at high γ-energies and small scattering angles.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87808105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-06-30DOI: 10.14407/JRPR.2018.43.2.50
Dahye Kwon, W. Hwang, Moosung Jae
Background: In terms of the Level 3 probabilistic safety assessment (Level 3 PSA), ingestion of food that had been exposed to radioactive materials is important to assess the intermediateand long-term radiological dose. Because the ingestion dose is considerably dependent upon the agricultural and dietary characteristics of each country, the reliability of the assessment results may become diminished if the characteristics of a foreign country are considered. Thus, this study intends to evaluate and analyze the ingestion dose of Korean during a severe accident by completely considering the available agricultural and dietary characteristics in Korea.
{"title":"Ingestion Dose Evaluation of Korean Based on Dynamic Model in a Severe Accident","authors":"Dahye Kwon, W. Hwang, Moosung Jae","doi":"10.14407/JRPR.2018.43.2.50","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.2.50","url":null,"abstract":"Background: In terms of the Level 3 probabilistic safety assessment (Level 3 PSA), ingestion of food that had been exposed to radioactive materials is important to assess the intermediateand long-term radiological dose. Because the ingestion dose is considerably dependent upon the agricultural and dietary characteristics of each country, the reliability of the assessment results may become diminished if the characteristics of a foreign country are considered. Thus, this study intends to evaluate and analyze the ingestion dose of Korean during a severe accident by completely considering the available agricultural and dietary characteristics in Korea.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87992428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-06-30DOI: 10.14407/JRPR.2018.43.2.39
D. Keum, H. Jeong, I. Jun, K. Lim, Y. Choi
Conclusion: The present model is very useful to predict the radioactivity concentration of agricultural foodstuffs and public ingestion dose as consequence of a nuclear accident. Consequently, it is expected to be used effectively as a module for the ingestion dose calculation of the Korean agricultural contamination management system as well as the Level 3 PSA code, which is currently being developed.
{"title":"Assessing the Activity Concentration of Agricultural Products and the Public Ingestion Dose as Result of a Nuclear Accident","authors":"D. Keum, H. Jeong, I. Jun, K. Lim, Y. Choi","doi":"10.14407/JRPR.2018.43.2.39","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.2.39","url":null,"abstract":"Conclusion: The present model is very useful to predict the radioactivity concentration of agricultural foodstuffs and public ingestion dose as consequence of a nuclear accident. Consequently, it is expected to be used effectively as a module for the ingestion dose calculation of the Korean agricultural contamination management system as well as the Level 3 PSA code, which is currently being developed.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72886372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-06-30DOI: 10.14407/JRPR.2018.43.2.59
Jung In Kim, Ji Hye Han, C. Choi, H. An, Hong-Gyun Wu, Jong Min Park
1Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea; 2Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea; 3Biomedical Research Institute, Seoul National University College of Medicine, Seoul, Korea; 4Department of Physics, Ewha Womans University, Seoul, Korea; 5Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea; 6Robotics Research Laboratory for Extreme Environments, Advanced Institutes of Convergence Technology, Suwon, Korea
{"title":"Discrepancies in Dose-volume Histograms Generated from Different Treatment Planning Systems","authors":"Jung In Kim, Ji Hye Han, C. Choi, H. An, Hong-Gyun Wu, Jong Min Park","doi":"10.14407/JRPR.2018.43.2.59","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.2.59","url":null,"abstract":"1Department of Radiation Oncology, Seoul National University Hospital, Seoul, Korea; 2Institute of Radiation Medicine, Seoul National University Medical Research Center, Seoul, Korea; 3Biomedical Research Institute, Seoul National University College of Medicine, Seoul, Korea; 4Department of Physics, Ewha Womans University, Seoul, Korea; 5Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea; 6Robotics Research Laboratory for Extreme Environments, Advanced Institutes of Convergence Technology, Suwon, Korea","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72430008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2018-06-30DOI: 10.14407/JRPR.2018.43.2.66
Jung-Min Oh, Young-Eun Kim, B. Hong, S. Bok, S. Jeon, Chan-Ju Lee, Dong-Young Park, I. Kim, H. Kim, G. Ahn
1Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Korea; 2Department of Radiation Oncology, College of Medicine, Seoul National University, Seoul, Korea; 3Cancer Research Institute, College of Medicine, Seoul National University, Seoul, Korea; 4Institute of Radiation Medicine, Medical Research Center, Seoul National University, Seoul, Korea; 5Department of Life Science, Pohang University of Science and Technology, Pohang, Korea
{"title":"Effects of Tumor Microenvironmental Factors on DNA Methylation and Radiation Sensitivity in A549 Human Lung Adenocarcinoma","authors":"Jung-Min Oh, Young-Eun Kim, B. Hong, S. Bok, S. Jeon, Chan-Ju Lee, Dong-Young Park, I. Kim, H. Kim, G. Ahn","doi":"10.14407/JRPR.2018.43.2.66","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.2.66","url":null,"abstract":"1Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang, Korea; 2Department of Radiation Oncology, College of Medicine, Seoul National University, Seoul, Korea; 3Cancer Research Institute, College of Medicine, Seoul National University, Seoul, Korea; 4Institute of Radiation Medicine, Medical Research Center, Seoul National University, Seoul, Korea; 5Department of Life Science, Pohang University of Science and Technology, Pohang, Korea","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2018-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73260348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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