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Journal of Radiation Protection and Research最新文献

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Plan-Class Specific Reference Quality Assurance for Volumetric Modulated Arc Therapy 体积调制弧线治疗的计划级特定参考质量保证
IF 0.5
Journal of Radiation Protection and Research Pub Date : 2019-03-31 DOI: 10.14407/JRPR.2019.44.1.32
Mohammad Mahfujur Rahman, Chan Hyeong Kim, Seonghoon Kim
{"title":"Plan-Class Specific Reference Quality Assurance for Volumetric Modulated Arc Therapy","authors":"Mohammad Mahfujur Rahman, Chan Hyeong Kim, Seonghoon Kim","doi":"10.14407/JRPR.2019.44.1.32","DOIUrl":"https://doi.org/10.14407/JRPR.2019.44.1.32","url":null,"abstract":"Background: There have been much efforts to develop the proper and realistic machine Quality Assurance (QA) reflecting on real Volumetric Modulated Arc Therapy (VMAT) plan. In this work we propose and test a special VMAT plan of plan-class specific (pcsr) QA, as a machine QA so that it might be a good solution to supplement weak point of present machine QA to make it more realistic for VMAT treatment.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":"76 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86321548","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}
引用次数: 2
Assessment of Dose Distributions According to Low Magnetic Field Effect for Prostate SABR 根据低磁场效应评估前列腺SABR的剂量分布
IF 0.5
Journal of Radiation Protection and Research Pub Date : 2019-03-31 DOI: 10.14407/JRPR.2019.44.1.26
J. Son, H. An, C. Choi, E. Chie, J. Kim, Jong Min Park, Jung In Kim
{"title":"Assessment of Dose Distributions According to Low Magnetic Field Effect for Prostate SABR","authors":"J. Son, H. An, C. Choi, E. Chie, J. Kim, Jong Min Park, Jung In Kim","doi":"10.14407/JRPR.2019.44.1.26","DOIUrl":"https://doi.org/10.14407/JRPR.2019.44.1.26","url":null,"abstract":"Background: Stereotactic ablative radiotherapy (SABR) plans in prostate cancer are compared and analyzed to investigate the low magnetic effect (0.35 T) on the dose distribution, with various dosimetric parameters according to low magnetic field. Materials and Methods: Twenty patients who received a 36.25 Gy in five fractions using the MR-IGRT system (ViewRay) were studied. For planning target volume (PTV), the point mean dose (Dmean), maximum dose (Dmax), minimum dose (Dmin) and volumes receiving 100% (V100%), 95% (V95%), and 90% (V90%) of the total dose. For organs-at-risk (OARs), the differences compared using Dmax, V50%, V80%, V90%, and V100% of the rectum; Dmax, V50%, V30Gy, V100% of the bladder; and V30Gy of both left and right femoral heads. For both the outer and inner shells near the skin, Dmean, Dmin, and Dmax were compared. Results and Discussion: In PTV analysis, the maximum difference in volumes (V100%, V95%, and V90%) according to low magnetic field was 0.54 ± 0.63% in V100%. For OAR, there was no significant difference of dose distribution on account of the low magnetic field. In results of the shells, although there were no noticeable differences in dose distribution, the average difference of dose distribution for the outer shell was 1.28 ± 1.08 Gy for Dmax. Conclusion: In the PTV and OARs for prostate cancer, there are no statistically-significant differences between the plan calculated with and without a magnetic field. However, we confirm that the dose distribution significantly increases near the body shell when a magnetic field is applied.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":"14 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84293610","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}
引用次数: 3
Psammaplin A-Modified Novel Radiosensitizers for Human Lung Cancer and Glioblastoma Cells Psammaplin a修饰的新型放射增敏剂用于人肺癌和胶质母细胞瘤细胞
IF 0.5
Journal of Radiation Protection and Research Pub Date : 2019-03-31 DOI: 10.14407/JRPR.2019.44.1.15
C. Wee, Jin Ho Kim, H. Kim, Hyun-Cheol Kang, S. Suh, B. Shin, E. Ma, I. Kim
{"title":"Psammaplin A-Modified Novel Radiosensitizers for Human Lung Cancer and Glioblastoma Cells","authors":"C. Wee, Jin Ho Kim, H. Kim, Hyun-Cheol Kang, S. Suh, B. Shin, E. Ma, I. Kim","doi":"10.14407/JRPR.2019.44.1.15","DOIUrl":"https://doi.org/10.14407/JRPR.2019.44.1.15","url":null,"abstract":"1Department of Radiation Oncology, Seoul National University College of Medicine, Seoul, Korea; 2Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea; 3Institute of Radiation Medicine, Seoul National University College of Medicine, Seoul, Korea; 4School of Pharmacy, Sungkyunkwan University, Suwon, Korea; 5College of Pharmacy, Daegu Catholic University, Gyeongsan, Korea","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":"56 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78442884","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}
引用次数: 2
Mid-Term Performance of Clinical LINAC in Volumetric Modulated Arc Therapy 容积调节电弧治疗中临床线性ac的中期表现
IF 0.5
Journal of Radiation Protection and Research Pub Date : 2019-03-30 DOI: 10.14407/JRPR.2019.44.1.43
Mohammad Mahfujur Rahman, Chan Hyeong Kim, Seonghoon Kim
{"title":"Mid-Term Performance of Clinical LINAC in Volumetric Modulated Arc Therapy","authors":"Mohammad Mahfujur Rahman, Chan Hyeong Kim, Seonghoon Kim","doi":"10.14407/JRPR.2019.44.1.43","DOIUrl":"https://doi.org/10.14407/JRPR.2019.44.1.43","url":null,"abstract":"Background: The mid-term performance of clinical linear accelerator (LINAC) during volumetric modulated arc therapy (VMAT) treatment period is not performed in clinical practice and usually replaced with one-time plan quality assurance (QA). In this research we aim to monitor daily reproducibility of VMAT delivery from tracking individual leaf movement error and dosimetric error to evaluate the mid-term quality of the machine used. Materials and Methods: First, multileaf collimator (MLC) information was imported into MATLAB program to determine which of the MLC leaves in the leaf bank had the maximum RMS position error (maxRMS). We estimated where the maximum positional errors (maxPE) of the chosen leaf occur along its path length and tracked its daily variations over the entire treatment period. Secondly, picture information of dosimetric error from portal dosimetry was imported into MATLAB where representative high gamma index region (HGR) was determined as HGR with length of > 1 cm and their centers were daily tracked. Results and Discussion: The maxPEs in the brain and tongue cases were distributed broader than in other cases, but all data were found located within ± 0.5 mm. From first day to last day all of five cases show the similar visual pattern of HGRs and Centers of the longest HGRs re-mained within ± 1 mm of that in first day. These findings prove excellent mid-term performance of the LINAC used in VMAT treatments over a full course of treatment. Conclusion: Tracking the daily location changes of leaf movement and dosimetric error can be a good indicator of predicting the daily quality like stability and reproducibility of beam delivering in VMAT treatment.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":"18 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2019-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78371997","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}
引用次数: 1
Effect of Agricultural Countermeasures on Ingestion Dose Following a Nuclear Accident 核事故后农业对策对摄入剂量的影响
IF 0.5
Journal of Radiation Protection and Research Pub Date : 2019-03-30 DOI: 10.14407/JRPR.2019.44.1.8
D. Keum, H. Jeong, I. Jun, K. Lim, Y. Choi, So-Hyeon Lee, Tae-Jong Jung
{"title":"Effect of Agricultural Countermeasures on Ingestion Dose Following a Nuclear Accident","authors":"D. Keum, H. Jeong, I. Jun, K. Lim, Y. Choi, So-Hyeon Lee, Tae-Jong Jung","doi":"10.14407/JRPR.2019.44.1.8","DOIUrl":"https://doi.org/10.14407/JRPR.2019.44.1.8","url":null,"abstract":"Materials and Methods: Agricultural countermeasures suitable for domestic farming environments were selected by referring to the countermeasures applied after the Fukushima accident in Japan. The avertable ingestion doses that could be obtained by implementing the selected countermeasures were calculated using the Korean Agricultural Countermeasure Analysis Program (K-ACAP) to investigate the efficiency of each countermeasure.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":"25 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2019-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89651135","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}
引用次数: 1
An Integrated System for Radioluminescence, Thermoluminescence and Optically Stimulated Luminescence Measurements 辐射发光、热发光和光激发发光测量集成系统
IF 0.5
Journal of Radiation Protection and Research Pub Date : 2018-12-30 DOI: 10.14407/JRPR.2018.43.4.160
Chang-Young Park, Young-Kook Park, K. Chung, Jong-Duk Lee, Jungil Lee, Jang-Lyul Kim
{"title":"An Integrated System for Radioluminescence, Thermoluminescence and Optically Stimulated Luminescence Measurements","authors":"Chang-Young Park, Young-Kook Park, K. Chung, Jong-Duk Lee, Jungil Lee, Jang-Lyul Kim","doi":"10.14407/JRPR.2018.43.4.160","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.4.160","url":null,"abstract":"Background: This study aims to develop an integrated optical system that can simultaneously or selectively measure the signals obtained from radioluminescence (RL), thermoluminescence (TL), and optically stimulated luminescence (OSL), which are luminescence phenomena of materials stimulated by radioactivity, heat, and light, respectively. The luminescence mechanism of various materials could be investigated using the glow curves of the luminescence materials.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":"35 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76364071","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}
引用次数: 2
A Copper Shield for the Reduction of X-γ True Coincidence Summing in Gamma-ray Spectrometry 伽玛能谱法中X-γ真符合和还原的铜屏蔽
IF 0.5
Journal of Radiation Protection and Research Pub Date : 2018-12-30 DOI: 10.14407/JRPR.2018.43.4.137
J. Byun
{"title":"A Copper Shield for the Reduction of X-γ True Coincidence Summing in Gamma-ray Spectrometry","authors":"J. Byun","doi":"10.14407/JRPR.2018.43.4.137","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.4.137","url":null,"abstract":"","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":"2001 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88307340","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}
引用次数: 4
Verification of Harmonization of Dose Assessment Results According to Internal Exposure Scenarios 内照射情景剂量评估结果一致性的验证
IF 0.5
Journal of Radiation Protection and Research Pub Date : 2018-12-30 DOI: 10.14407/JRPR.2018.43.4.143
Bong-Gi Kim, Wi-Ho Ha, Tae-Eun Kwon, Jun-Ho Lee, Kyu-Hwan Jung
{"title":"Verification of Harmonization of Dose Assessment Results According to Internal Exposure Scenarios","authors":"Bong-Gi Kim, Wi-Ho Ha, Tae-Eun Kwon, Jun-Ho Lee, Kyu-Hwan Jung","doi":"10.14407/JRPR.2018.43.4.143","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.4.143","url":null,"abstract":"Background: The determination of the amount of radionuclides and internal dose for the worker who may have intake of radionuclides results in a variation due to uncertainty of measurement data and ingestion information. As a result of this, it is possible that for the same internal exposure scenario assessors could make considerably different estimation of internal dose. In order to reduce this difference, internal exposure scenarios for nuclear facilities were developed, and intercomparison were made to determine the harmonization of dose assessment results among the assessors.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":"42 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80820531","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}
引用次数: 0
Feasibility Study of Beta Detector for Small Leak Detection inside the Reactor Containment 反应堆安全壳内小泄漏检测β探测器的可行性研究
IF 0.5
Journal of Radiation Protection and Research Pub Date : 2018-12-30 DOI: 10.14407/JRPR.2018.43.4.154
Jaeyeong Jang, T. Schaarschmidt, Yong Kyun Kim
{"title":"Feasibility Study of Beta Detector for Small Leak Detection inside the Reactor Containment","authors":"Jaeyeong Jang, T. Schaarschmidt, Yong Kyun Kim","doi":"10.14407/JRPR.2018.43.4.154","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.4.154","url":null,"abstract":"This work was supported by the Korea Institute of EnergyTechnology Evaluation and Planning (KETEP) grant fundedby the Korea government (MOTIE) (20181510102340, Development of a real-time detection system for unidentified RCSleakage less than 0.5 gpm).","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":"30 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85859910","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}
引用次数: 4
Influence of the Thin-Film Ag Electrode Deposition Thickness on the Current Characteristics of a CVD Diamond Radiation Detector 薄膜银电极沉积厚度对CVD金刚石辐射探测器电流特性的影响
IF 0.5
Journal of Radiation Protection and Research Pub Date : 2018-12-30 DOI: 10.14407/JRPR.2018.43.4.131
C. Ban, Chul-Yong Lee, B. Jun
{"title":"Influence of the Thin-Film Ag Electrode Deposition Thickness on the Current Characteristics of a CVD Diamond Radiation Detector","authors":"C. Ban, Chul-Yong Lee, B. Jun","doi":"10.14407/JRPR.2018.43.4.131","DOIUrl":"https://doi.org/10.14407/JRPR.2018.43.4.131","url":null,"abstract":"Background: We investigated the current characteristics of a thin-film Ag electrode on a chemical vapor deposition (CVD) diamond. The CVD diamond is widely recognized as a radiation detection material because of its high tolerance against high radiation, stable response to various dose rates, and good sensitivity. Additionally, thin-film Ag has been widely used as an electrode with high electrical conductivity.","PeriodicalId":36088,"journal":{"name":"Journal of Radiation Protection and Research","volume":"33 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2018-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87551181","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}
引用次数: 0
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