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Kwon NH, Shin DO, Ann SH, Kim JS, Choi SH, Kim DW. Analysis of radiation safety management status of medical linear accelerator facilities in Korea. Nuclear Engineering and Technology 2022. [DOI: 10.1016/j.net.2021.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Kwon NH, Shin DO, Kim J, Yoo J, Park MS, Kim KB, Kim DW, Choi SH. Current status of disposal and measurement analysis of radioactive components in linear accelerators in Korea. Nuclear Engineering and Technology 2022. [DOI: 10.1016/j.net.2021.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Kong M, Lim YJ, Kim Y, Chung MJ, Min S, Shin DO, Chung W. Diabetes mellitus is a predictive factor for radiation pneumonitis after thoracic radiotherapy in patients with lung cancer. Cancer Manag Res 2019; 11:7103-7110. [PMID: 31440097 PMCID: PMC6667346 DOI: 10.2147/cmar.s210095] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 07/10/2019] [Indexed: 12/19/2022] Open
Abstract
Purpose We evaluated the effects of diabetes mellitus (DM) and DM-related serologic factors (HbA1c and fasting glucose) on the development of radiation pneumonitis in patients with lung cancer. Methods We retrospectively analyzed the clinical data of 123 patients with lung cancer treated with radiotherapy. Radiation pneumonitis was scored according to the toxicity criteria of the Radiation Therapy Oncology Group. We used binary logistic regression analysis to find significant predictive factors for the development of grade ≥3 radiation pneumonitis. Results On univariable analysis, V20, mean lung dose, DM, HbA1c, and fasting glucose level were significantly associated with the development of grade ≥3 radiation pneumonitis. On multivariable analysis, V20, mean lung dose, DM, HbA1c, and fasting glucose level remained significant predictive factors for grade ≥3 radiation pneumonitis. The incidence of grade ≥3 radiation pneumonitis was 44.4% in patients with DM and 20.7% in patients without DM. The incidence of grade ≥3 radiation pneumonitis was 12.7% for HbA1c level ≤6.15% and 41.5% for HbA1c level >6.15%. The incidence of grade ≥3 radiation pneumonitis was 17.2% for fasting glucose level ≤121 mg/dL and 35.5% for fasting glucose level >121 mg/dL. Conclusion DM, HbA1c, and fasting glucose level are significant predictive factors for the development of grade ≥3 radiation pneumonitis in patients with lung cancer. Patients with DM, patients who have HbA1c >6.15%, and patients who have fasting glucose >121 mg/dL should be treated with greater caution.
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Affiliation(s)
- Moonkyoo Kong
- Department of Radiation Oncology, Kyung Hee University Medical Center, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Yu Jin Lim
- Department of Radiation Oncology, Kyung Hee University Medical Center, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Youngkyong Kim
- Department of Radiation Oncology, Kyung Hee University Medical Center, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Mi Joo Chung
- Department of Radiation Oncology, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Soonki Min
- Department of Radiation Oncology, Kyung Hee University Medical Center, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Dong Oh Shin
- Department of Radiation Oncology, Kyung Hee University Medical Center, Kyung Hee University School of Medicine, Seoul, Republic of Korea
| | - Weonkuu Chung
- Department of Radiation Oncology, Kyung Hee University Hospital at Gangdong, Kyung Hee University School of Medicine, Seoul, Republic of Korea
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Ahn S, Shin DO, Choi SH, Koo J, Lee SS, Park DW, Oh YJ, Park S, Kim DW. Status and Perception of Risk Management in Radiation Therapy: Survey Among Korean Medical Physicists. Health Phys 2018; 114:77-83. [PMID: 29135537 DOI: 10.1097/hp.0000000000000739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
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. It was confirmed that the current risk management system should be changed by education in the hospital and at the national level in order to improve risk management related to radiation therapy. In addition, it was recognized that a dedicated staff and a risk management certification system and organization for patient safety in radiotherapy are needed.
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Oh Y, Shin DO, Kim J, Kwon N, Lee SS, Choi SH, Ahn S, Park DW, Kim DW. Proposal on Guideline for Quality Assurance of Radiation Treatment Planning System. ACTA ACUST UNITED AC 2017. [DOI: 10.14316/pmp.2017.28.4.197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Yoonjin Oh
- Research Institute of Clinical Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Korea
| | - Dong Oh Shin
- Department of Radiation Oncology, Kyung Hee University Hospital, Seoul, Korea
| | - Juhye Kim
- Research Institute of Clinical Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Korea
| | - Nahye Kwon
- Research Institute of Clinical Medicine, Kyung Hee University Hospital at Gangdong, Seoul, Korea
| | - Soon Sung Lee
- Department of Radiological & Medico Oncological Sciences, University of Science and Technology, Seoul, Korea
- Division of Medical Radiation Equipment, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Sang Hyoun Choi
- Division of Medical Radiation Equipment, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Sohyun Ahn
- Department of Radiation Oncology, School of Medicine, Yonsei University, Seoul, Korea
| | - Dong-wook Park
- Department of Radiation Oncology, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Dong Wook Kim
- Department of Radiation Oncology, Kyung Hee University Hospital at Gangdong, Seoul, Korea
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Kim DW, Chung K, Chung WK, Bae SH, Shin DO, Hong S, Park SH, Park SY, Hong CS, Lim YK, Shin D, Lee SB, Lee HH, Sung J, Yoon M. Risk of secondary cancers from scattered radiation during intensity-modulated radiotherapies for hepatocellular carcinoma. Radiat Oncol 2014; 9:109. [PMID: 24886163 PMCID: PMC4030012 DOI: 10.1186/1748-717x-9-109] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 03/17/2014] [Indexed: 12/25/2022] Open
Abstract
PURPOSE To evaluate and compare the risks of secondary cancers from therapeutic doses received by patients with hepatocellular carcinoma (HCC) during intensity-modulated radiotherapy (IMRT), volumetric arc therapy (VMAT), and tomotherapy (TOMO). METHODS Treatments for five patients with hepatocellular carcinoma (HCC) were planned using IMRT, VMAT, and TOMO. Based on the Biological Effects of Ionizing Radiation VII method, the excess relative risk (ERR), excess absolute risk (EAR), and lifetime attributable risk (LAR) were evaluated from therapeutic doses, which were measured using radiophotoluminescence glass dosimeters (RPLGDs) for each organ inside a humanoid phantom. RESULTS The average organ equivalent doses (OEDs) of 5 patients were measured as 0.23, 1.18, 0.91, 0.95, 0.97, 0.24, and 0.20 Gy for the thyroid, lung, stomach, liver, small intestine, prostate (or ovary), and rectum, respectively. From the OED measurements, LAR incidence were calculated as 83, 46, 22, 30, 2 and 6 per 10(4) person for the lung, stomach, normal liver, small intestine, prostate (or ovary), and rectum. CONCLUSIONS We estimated the secondary cancer risks at various organs for patients with HCC who received different treatment modalities. We found that HCC treatment is associated with a high secondary cancer risk in the lung and stomach.
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Affiliation(s)
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- Department of Radiological Science, College of Health Science, Korea University, Jeongneung 3-dong, Seongbuk-gu, Seoul, Korea.
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Lee CY, Kim WC, Kim HJ, Ji YH, Kim KB, Lee SH, Min CK, Jo GH, Shin DO, Kim SH, Huh HD. Feasibility Study of the microDiamond Detector for Measurement of Small Field Photon Beam. ACTA ACUST UNITED AC 2014. [DOI: 10.14316/pmp.2014.25.4.255] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Chang Yeol Lee
- Department of Radiation Oncology, College of Medicine, Inha University, Incheon, Korea
| | - Woo Chul Kim
- Department of Radiation Oncology, College of Medicine, Inha University, Incheon, Korea
| | - Hun Jeong Kim
- Department of Radiation Oncology, College of Medicine, Inha University, Incheon, Korea
| | - Young Hoon Ji
- Research Institute of Radiological and Medical Sciences, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Kum Bae Kim
- Research Institute of Radiological and Medical Sciences, Korea Institute of Radiological and Medical Sciences, Seoul, Korea
| | - Sang Hoon Lee
- Department of Radiation Oncology, College of Medicine, Kwandong University, Gangneung, Korea
| | - Chul Kee Min
- Department of Radiation Oncology, College of Medicine, Soonchunhyang University, Cheonan, Korea
| | - Gwang Hwan Jo
- Department of Radiation Oncology, College of Medicine, Soonchunhyang University, Cheonan, Korea
| | - Dong Oh Shin
- Department of Radiation Oncology, College of Medicine, Kyunghee University, Seoul, Korea
| | - Seong Hoon Kim
- Department of Radiation Oncology, College of Medicine, Hanyang University, Seoul, Korea
| | - Hyun Do Huh
- Department of Radiation Oncology, College of Medicine, Inha University, Incheon, Korea
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Kim DW, Chung WK, Shin J, Lim YK, Shin D, Lee SB, Yoon M, Park SY, Shin DO, Cho JK. Secondary neutron dose measurement for proton eye treatment using an eye snout with a borated neutron absorber. Radiat Oncol 2013; 8:182. [PMID: 23866307 PMCID: PMC3723544 DOI: 10.1186/1748-717x-8-182] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Accepted: 07/15/2013] [Indexed: 11/30/2022] Open
Abstract
Background We measured and assessed ways to reduce the secondary neutron dose from a system for proton eye treatment. Methods Proton beams of 60.30 MeV were delivered through an eye-treatment snout in passive scattering mode. Allyl diglycol carbonate (CR-39) etch detectors were used to measure the neutron dose in the external field at 0.00, 1.64, and 6.00 cm depths in a water phantom. Secondary neutron doses were measured and compared between those with and without a high-hydrogen–boron-containing block. In addition, the neutron energy and vertices distribution were obtained by using a Geant4 Monte Carlo simulation. Results The ratio of the maximum neutron dose equivalent to the proton absorbed dose (H(10)/D) at 2.00 cm from the beam field edge was 8.79 ± 1.28 mSv/Gy. The ratio of the neutron dose equivalent to the proton absorbed dose with and without a high hydrogen-boron containing block was 0.63 ± 0.06 to 1.15 ± 0.13 mSv/Gy at 2.00 cm from the edge of the field at depths of 0.00, 1.64, and 6.00 cm. Conclusions We found that the out-of-field secondary neutron dose in proton eye treatment with an eye snout is relatively small, and it can be further reduced by installing a borated neutron absorbing material.
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Affiliation(s)
- Dong Wook Kim
- Department of Radiation Oncology, Kyung Hee University Hospital at Gandong, Seoul, Korea
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Cho BC, Huh HD, Kim JS, Choi JH, Kim SH, Cho KH, Cho SJ, Min CK, Shin DO, Lee SH, Park DW, Kim KB, Choi SH, Kim HY, Ahn WS, Kim TH, Han SC. Guideline for Imaging Dose on Image-Guided Radiation Therapy. ACTA ACUST UNITED AC 2013. [DOI: 10.14316/pmp.2013.24.1.1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Byung Chul Cho
- Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Hyun Do Huh
- Department of Radiation Oncology, Inha Univeristy Hospital, Incheon, Korea
| | - Jin Sung Kim
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jin Ho Choi
- Department of Radiation Oncology, College of Medicine, Gachon University Gil Hospital, Incheon, Korea
| | - Seong Hoon Kim
- Department of Radiation Oncology, Hanyang University Hospital, Seoul, Korea
| | - Kwang Hwan Cho
- Department of Radiation Oncology, Soonchunhyang University Hospital, College of Medicine, Asan, Korea
| | - Sam Ju Cho
- Department of Radiological Science, College of Health Science, Eulji University, Seongnam, Korea
| | - Chul Kee Min
- Department of Radiation Oncology, Soonchunhyang University Hospital, College of Medicine, Asan, Korea
| | - Dong Oh Shin
- Department of Radiation Oncology, College of Medicine, Kyung Hee University Medical Center, Suwon, Korea
| | - Sang Hoon Lee
- Department of Radiation Oncology, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Seoul, Korea
| | - Dong Wook Park
- Department of Radiation Oncology, Inje University Hospital, Seoul, Korea
| | - Kum Bae Kim
- Research Center for Radiotherapy, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Sang Hyoun Choi
- Department of Radiation Oncology, Inha Univeristy Hospital, Incheon, Korea
| | - Hye Young Kim
- Department of Radiation Oncology, Inha Univeristy Hospital, Incheon, Korea
| | - Woo-sang Ahn
- Department of Radiation Oncology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Tae Hyeong Kim
- Research Center for Radiotherapy, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
| | - Su Cheol Han
- Research Center for Radiotherapy, Korea Institute of Radiological & Medical Sciences, Seoul, Korea
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Kim DW, Chung WK, Shin DO, Yoon M, Hwang UJ, Rah JE, Jeong H, Lee SY, Shin D, Lee SB, Park SY. Dose response of commercially available optically stimulated luminescent detector, Al2O3:C for megavoltage photons and electrons. Radiat Prot Dosimetry 2012; 149:101-108. [PMID: 21636557 DOI: 10.1093/rpd/ncr223] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This study examined the dose response of an optically stimulated luminescence dosemeter (OSLD) to megavoltage photon and electron beams. A nanoDot™ dosemeter was used to measure the dose response of the OSLD. Photons of 6-15 MV and electrons of 9-20 MeV were delivered by a Varian 21iX machine (Varian Medical System, Inc. Milpitas, CA, USA). The energy dependency was <1 %. For the 6-MV photons, the dose was linear until 200 cGy. The superficial dose measurements revealed photon irradiation to have an angular dependency. The nanoDot™ dosemeter has potential use as an in vivo dosimetric tool that is independent of the energy, has dose linearity and a rapid response compared with normal in vivo dosimetric tools, such as thermoluminescence detectors. However, the OSLD must be treated very carefully due to the high angular dependency of the photon beam.
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Affiliation(s)
- Dong Wook Kim
- Department of Radiation Oncology, Kyung Hee University Hospital at Kangdong, Seoul, Korea
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