K. Slosarek, T. Rutkowski, Adam Gądek, Łukasz Sroka, Ł. Dolla, R. Rutkowski, J. Jaroszewicz
{"title":"基于EPID测量的SARS-COVID患者放疗剂量估算","authors":"K. Slosarek, T. Rutkowski, Adam Gądek, Łukasz Sroka, Ł. Dolla, R. Rutkowski, J. Jaroszewicz","doi":"10.5603/NJO.a2022.0013","DOIUrl":null,"url":null,"abstract":"Introduction. COVID radiotherapy requires performance of all radiotherapy (RT) procedures during one site visit due to the infectious nature of the disease. The aim of the study was to develop methods of estimating the delivered dose based on electronic portal image device (EPID) signal during treatment. Material and methods. Electronic portal image device signal was measured as a function of the phantom dose. The dose in 14 COVID patients was estimated for two X6MV beams. Results. The method allows to estimate dose in phantom with uncertainty of 12%. In this case, a systematic error was reported. Therefore, coefficients for clinical data were calculated and used to determine the dose in patients. The mean difference between the dose calculated and the dose measured for the 14 patients was 1%, but the uncertainty of this method was estimated as ±6% Conclusions. The proposed method may be useful in clinical practice as in vivo method. However, due to high uncertainty, it should be dedicated to the detection of “big” errors.","PeriodicalId":39938,"journal":{"name":"Nowotwory","volume":"457 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dose estimation in patients treated with radiotherapy for SARS-COVID disease based on EPID measurement\",\"authors\":\"K. Slosarek, T. Rutkowski, Adam Gądek, Łukasz Sroka, Ł. Dolla, R. Rutkowski, J. Jaroszewicz\",\"doi\":\"10.5603/NJO.a2022.0013\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Introduction. COVID radiotherapy requires performance of all radiotherapy (RT) procedures during one site visit due to the infectious nature of the disease. The aim of the study was to develop methods of estimating the delivered dose based on electronic portal image device (EPID) signal during treatment. Material and methods. Electronic portal image device signal was measured as a function of the phantom dose. The dose in 14 COVID patients was estimated for two X6MV beams. Results. The method allows to estimate dose in phantom with uncertainty of 12%. In this case, a systematic error was reported. Therefore, coefficients for clinical data were calculated and used to determine the dose in patients. The mean difference between the dose calculated and the dose measured for the 14 patients was 1%, but the uncertainty of this method was estimated as ±6% Conclusions. The proposed method may be useful in clinical practice as in vivo method. However, due to high uncertainty, it should be dedicated to the detection of “big” errors.\",\"PeriodicalId\":39938,\"journal\":{\"name\":\"Nowotwory\",\"volume\":\"457 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nowotwory\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5603/NJO.a2022.0013\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Medicine\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nowotwory","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5603/NJO.a2022.0013","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Medicine","Score":null,"Total":0}
Dose estimation in patients treated with radiotherapy for SARS-COVID disease based on EPID measurement
Introduction. COVID radiotherapy requires performance of all radiotherapy (RT) procedures during one site visit due to the infectious nature of the disease. The aim of the study was to develop methods of estimating the delivered dose based on electronic portal image device (EPID) signal during treatment. Material and methods. Electronic portal image device signal was measured as a function of the phantom dose. The dose in 14 COVID patients was estimated for two X6MV beams. Results. The method allows to estimate dose in phantom with uncertainty of 12%. In this case, a systematic error was reported. Therefore, coefficients for clinical data were calculated and used to determine the dose in patients. The mean difference between the dose calculated and the dose measured for the 14 patients was 1%, but the uncertainty of this method was estimated as ±6% Conclusions. The proposed method may be useful in clinical practice as in vivo method. However, due to high uncertainty, it should be dedicated to the detection of “big” errors.
期刊介绍:
NOWOTWORY Journal of Oncology publishes papers which cover all aspects of oncology but concentrates on clinical studies, both research orientated and treatment orientated, rather than on laboratory studies. Contributions are also welcomed from the fields of epidemiology, tumor pathology, radiobiology and radiation physics.