Journal of Radiological Protection最新文献_第6页

Radiation dose analysis in interventional neuroradiology of unruptured aneurysm cases. 未破裂动脉瘤介入神经放射学病例的辐射剂量分析。

IF 1.4 4区环境科学与生态学

Journal of Radiological Protection Pub Date : 2024-09-12 DOI: 10.1088/1361-6498/ad76b3

Satoru Kawauchi, Koichi Chida, Takashi Moritake, Yusuke Hamada, Wataro Tsuruta

{"title":"Radiation dose analysis in interventional neuroradiology of unruptured aneurysm cases.","authors":"Satoru Kawauchi, Koichi Chida, Takashi Moritake, Yusuke Hamada, Wataro Tsuruta","doi":"10.1088/1361-6498/ad76b3","DOIUrl":"10.1088/1361-6498/ad76b3","url":null,"abstract":"This study aimed to evaluate the radiation doses (peak skin dose (PSD) and bilateral lens dose) for each interventional neuroradiology procedure. A direct measurement system consisting of small radiophotoluminescence glass dosimeter chips and a dosimetry cap made of thin stretchable polyester was used for radiation dosimetry. The mean PSDs for each procedure were 1565 ± 590 mGy (simple technique coil embolization (STCE) cases), 1851 ± 825 mGy (balloon-assisted coil embolization (BACE) cases), 2583 ± 967 mGy (stent-assisted coil embolization (SACE) cases), 1690 ± 597 mGy (simple flow-diverter stenting (FDS) cases), and 2214 ± 726 mGy (FDS + coiling cases). The mean PSD was higher in SACE cases than in STCE, BACE, and simple FDS cases. Moreover, the PSD exceeded 2000 mGy and 3000 mGy in 46 (67.6%) and 19 (27.9%) SACE cases, respectively. The left lens doses for each procedure were 126 ± 111 mGy (STCE cases), 163 ± 152 mGy (BACE cases), 184 ± 148 mGy (SACE cases), 144 ± 60 mGy (simple FDS cases), and 242 ± 178 mGy (FDS + coiling cases). The left lens dose in SACE cases was higher than that in STCE cases and exceeded 500 mGy in 3 (4.4%) patients. In FDS + coiling cases, the mean PSD and left lens dose were 2214 ± 726 mGy and 242 ± 178 mGy, respectively. The left lens dose was higher than that in the STCE and BACE cases, with two (15.4%) patients receiving doses >500 mGy in FDS + coiling cases. The detailed data obtained in this study are expected to contribute to the promotion of radiation dose optimization.","PeriodicalId":50068,"journal":{"name":"Journal of Radiological Protection","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142127102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Cavity ionization chamber responses in the JAEA and the NMIJ high-energy photon reference fields for radiation protection. 用于辐射防护的 JAEA 和 NMIJ 高能光子参考场中的空腔电离室响应。

IF 1.5 4区环境科学与生态学

Journal of Radiological Protection Pub Date : 2024-09-12 DOI: 10.1088/1361-6498/ad7a07

Junya Ishii,Morihito Shimizu,Masahiro Kato,Tadahiro Kurosawa,Tomoya Tsuji,Hiroshi Yoshitomi,Yoshihiko Tanimura,Hiroshi Watabe

{"title":"Cavity ionization chamber responses in the JAEA and the NMIJ high-energy photon reference fields for radiation protection.","authors":"Junya Ishii,Morihito Shimizu,Masahiro Kato,Tadahiro Kurosawa,Tomoya Tsuji,Hiroshi Yoshitomi,Yoshihiko Tanimura,Hiroshi Watabe","doi":"10.1088/1361-6498/ad7a07","DOIUrl":"https://doi.org/10.1088/1361-6498/ad7a07","url":null,"abstract":"The dosimeter response should be calibrated in a reference field near the user's radiation environment. Environments around nuclear reactors and radition therapy facilities have high-energy photons with energies exceeding that of60Co gamma rays, and controlling exposure to these photons is important. The Japan Atomic Energy Agency (JAEA) and National Metrology Institute of Japan (NMIJ) have high-energy reference fields with energies above several MeV for different types of accelerators. Their reference fields have different fluence-energy distributions. In this study, the energy dependencies of the two-cavity ionization chambers, which are often used by secondary laboratories, were experimentally and computationally evaluated for each high-energy field. These results agreed well with relative expanded uncertainties (k= 2), and their capabilities for air kerma measurements in each high-energy reference field were confirmed. Therefore, the capabilities of the air-kerma measurements can be verified in the two high-energy reference fields.&#xD.","PeriodicalId":50068,"journal":{"name":"Journal of Radiological Protection","volume":"11 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Validating the application of the revised ICRP's biokinetic models for organic 14C and organically bound tritium to members of the public. 验证国际放射防护委员会修订的有机 14C 和有机结合氚生物动力学模型在公众中的应用。

IF 1.5 4区环境科学与生态学

Journal of Radiological Protection Pub Date : 2024-09-12 DOI: 10.1088/1361-6498/ad7a04

Tsuyoshi Masuda,Kentaro Manabe

{"title":"Validating the application of the revised ICRP's biokinetic models for organic 14C and organically bound tritium to members of the public.","authors":"Tsuyoshi Masuda,Kentaro Manabe","doi":"10.1088/1361-6498/ad7a04","DOIUrl":"https://doi.org/10.1088/1361-6498/ad7a04","url":null,"abstract":"In 2016, the International Commission on Radiological Protection (ICRP) has revised the biokinetic models for carbon and tritium in Publication 134 to calculate the dose coefficients of these radionuclides for workers. The following publication for members of the public is now in the process of revising by the ICRP. According to the draft manuscript published for consultation in 2023, the same models will be adopted for members of the public, although the parameters in these models are not corroborated by the metabolic data of radionuclides in foods. Dose coefficients were estimated using the modified models developed in this study to validate the application of the revised models to members of the public. In the modified models, several parameters were replaced based on the metabolic data of these nuclides in foods and compartments of radio-insensitive tissues were introduced. For these estimations, we utilised the an inhouse program for internal-dose calculation developed by the Japan Atomic Energy Agency. The estimated dose coefficient values for ingestion of organic 14C and organically bound tritium ranged from 3.2×10-11 to 7.6×10-11 Sv Bq-1 and from 3.5×10-11 to 5.4×10-11 Sv Bq-1, respectively. We concluded that the dose coefficient value of 1.6×10-10 Sv Bq-1 obtained by the revised ICRP's carbon model was conservative, while the value of 5.1×10-11 Sv Bq-1 for organically bound tritium was appropriate.&#xD.","PeriodicalId":50068,"journal":{"name":"Journal of Radiological Protection","volume":"64 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of radiation-shielding curtains for endoscopic retrograde cholangiopancreatography staff. 内镜逆行胰胆管造影工作人员辐射屏蔽帘的比较。

IF 1.5 4区环境科学与生态学

Journal of Radiological Protection Pub Date : 2024-09-12 DOI: 10.1088/1361-6498/ad7a06

Hiroki Ishii,Koichi Chida,Yohei Inaba,Shu Onodera,Masahiro Sai,Masayuki Zuguchi

{"title":"Comparison of radiation-shielding curtains for endoscopic retrograde cholangiopancreatography staff.","authors":"Hiroki Ishii,Koichi Chida,Yohei Inaba,Shu Onodera,Masahiro Sai,Masayuki Zuguchi","doi":"10.1088/1361-6498/ad7a06","DOIUrl":"https://doi.org/10.1088/1361-6498/ad7a06","url":null,"abstract":"Occupational radiation exposure to the eye lens of medical staff during endoscopic retrograde cholangiopancreatography (ERCP) should be kept low so as not to exceed annual dose limits. Dose should be low to avoid tissue reactions and minimizing stochastic effects. It is known that the head and neck of the staff are exposed to more scattered radiation in an over-couch tube system than in a C-arm system (under-couch tube). However, this is only true when radiation-shielding curtains are not used. This study aimed to compare the protection radiation to the occupationally exposed worker between a lead curtain mounted on a C-arm system and an ERCP-specific lead curtain mounted on an over-couch tube system. A phantom study simulating a typical setting for ERCP procedures was conducted, and the scattered radiation dose at four staff positions were measured. It was found that scattered radiation doses were higher in the C-arm with a lead curtain than in the over-couch tube with an ERCP-specific lead curtain at all positions measured in this study. It was concluded that the over-couch tube system with an ERCP-specific lead curtain would reduce the staff eye dose by less than one-third compared to the C-arm system with a lead curtain. For the C-arm system, it is necessary to consider more effective radiation protection measures for the upper body of the staff, such as a ceiling-suspended lead screen or another novel shielding that do not interfere with procedures.","PeriodicalId":50068,"journal":{"name":"Journal of Radiological Protection","volume":"1 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142267308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Practical guidance on the assessment of radiation risks for diagnostic radiological examinations. 放射诊断检查辐射风险评估实用指南。

IF 1.4 4区环境科学与生态学

Journal of Radiological Protection Pub Date : 2024-09-11 DOI: 10.1088/1361-6498/ad72fd

V Golikov, A Vodovatov, L Chipiga, I Shatskiy

{"title":"Practical guidance on the assessment of radiation risks for diagnostic radiological examinations.","authors":"V Golikov, A Vodovatov, L Chipiga, I Shatskiy","doi":"10.1088/1361-6498/ad72fd","DOIUrl":"10.1088/1361-6498/ad72fd","url":null,"abstract":"Patient doses cannot be limited; instead, radiological examinations should be justified and optimised to ensure the necessary diagnostic or therapeutic effect with the lowest patient dose achievable. Assessment of the radiation risks from patient exposure is important part of the justification process. Hence, medical staff within the framework of their professional activities should possess necessary information on the data on radiation risk from different types of radiological procedures. An approach has been developed that allows considering age and gender dependences of the risk coefficients of radiogenic cancer and the age and gender distribution of patients for various radiological examinations to assess the individual radiation risk for patient and collective risk for population from medical exposure. The approach is based on a new expanded use of the effective dose concept proposed in ICRP Publication 147 and demonstrated using the medical exposure in the Russian Federation as the example. For 30 radiological examinations that compose about 80% of the collective dose from medical exposure of the public in the Russian Federation radiation risk was assessed based on calculated age and gender specific risk coefficients per unit effective dose. For the rest of the examinations a simplified approach was used to assess the risk, which was based on using an age and gender specific risk coefficient determined for one of 4 anatomical regions (head, neck, chest and abdomen) or for uniform irradiation of the whole body. The proposed approach allows significantly improving the assessment of the radiation risk while continuing to use the effective dose as a dosimetric quantity within the framework of the state program in the Russian Federation. As a result the collective risk from medical examinations in the Russian Federation in 2022 was lower by the factor of 3 compared to the previous assessment based on the effective dose with the nominal risk coefficient.","PeriodicalId":50068,"journal":{"name":"Journal of Radiological Protection","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142047436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The international society for radiation epidemiology and dosimetry (ISoRED). 国际辐射流行病学和剂量测定学会（ISoRED）。

IF 1.4 4区环境科学与生态学

Journal of Radiological Protection Pub Date : 2024-09-10 DOI: 10.1088/1361-6498/ad746e

Richard Harbron, Amy Berrington de González, Keith Griffin, Isaf Al-Nabulsi, Isabelle Thierry-Chef, Lydia Wilson, Elisabeth Cardis

引用次数: 0

Use of real-time electronic extremity dosimeters for monitoring and optimisation of radiopharmacy technique. 使用实时电子肢体剂量计监测和优化放射药剂技术。

IF 1.4 4区环境科学与生态学

Journal of Radiological Protection Pub Date : 2024-09-09 DOI: 10.1088/1361-6498/ad71d9

S Cournane, J McCavana, D Maguire, L Tutty, L Harris, J Lucey, C Kenneally

{"title":"Use of real-time electronic extremity dosimeters for monitoring and optimisation of radiopharmacy technique.","authors":"S Cournane, J McCavana, D Maguire, L Tutty, L Harris, J Lucey, C Kenneally","doi":"10.1088/1361-6498/ad71d9","DOIUrl":"10.1088/1361-6498/ad71d9","url":null,"abstract":"Radiopharmacy staff members are subject to extremity radiation doses, particularly to the fingertips. Dosemeters, such as, thermoluminescent detectors (TLDs) are currently used for monitoring fingertip doses. This study aimed to use real-time dosemeters to monitor radiopharmacy extremity doses to identify specific procedural steps associated with higher fingertip doses and, subsequently, reduce dose through promotion of optimised radiation protection practises. Five radiopharmacy operators were monitored using an ED3 active extremity dosemeter with a detector attached to each tip of the index fingers. Dose rate and accumulated dose data were matched to the handled radioactivity data, of99mTc-labelled radiopharmaceuticals only, with the dose per activity (μSv MBq-1) calculated for each step. Once baseline dose data was established, an educational session identified technique adjustments toward improved radiation protection. A subsequent monitored session was undertaken with the dose data compared to quantify changes in operator doses. Radiopharmacy steps which significantly contributed to extremity doses were identified. The average accumulated dose per activity across all procedural steps for the99mTc-labelled radiopharmaceuticals for all operators before the educational session was 0.042 ± 0.045μSv MBq-1and 0.042 ± 0.041μSv MBq-1(n= 89) for non-dominant and dominant index fingertips, respectively, and 0.030 ± 0.044μSv MBq-1and 0.031 ± 0.032μSv MBq-1(n= 97), respectively, afterwards. Overall, there was an average 40.7% reduction in the total extremity dose received after the educational session. Real-time electronic extremity dosemeters for monitoring radiopharmacy extremity dose presented as a useful tool for incorporation into radiation protection education and training, towards optimised radiopharmacy technique.","PeriodicalId":50068,"journal":{"name":"Journal of Radiological Protection","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142019369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Note on testing of radiological events in conventional and dental radiology. 传统放射学和牙科放射学放射事件检测说明。

IF 1.4 4区环境科学与生态学

Journal of Radiological Protection Pub Date : 2024-09-04 DOI: 10.1088/1361-6498/ad746f

Hugo Trindade

引用次数: 0

Real-time patient-specific-dose in CT through use of artificial intelligence. 通过使用人工智能，在 CT 中实时显示特定患者的剂量。

IF 1.4 4区环境科学与生态学

Journal of Radiological Protection Pub Date : 2024-09-04 DOI: 10.1088/1361-6498/ad750e

Madan M Rehani, Anjith Prakash

引用次数: 0

Evaluation of radiation dose to the lens in interventional cardiology physicians before and after dose limit regulation changes. 评估剂量限制规定变更前后介入心脏病学医生的晶状体辐射剂量。

IF 1.4 4区环境科学与生态学

Journal of Radiological Protection Pub Date : 2024-09-02 DOI: 10.1088/1361-6498/ad6f19

Kodai Sagehashi, Yoshihiro Haga, Saki Takahira, Mako Tanabe, Mio Nakamura, Masahiro Sota, Yuji Kaga, Mitsuya Abe, Norio Tada, Koichi Chida

{"title":"Evaluation of radiation dose to the lens in interventional cardiology physicians before and after dose limit regulation changes.","authors":"Kodai Sagehashi, Yoshihiro Haga, Saki Takahira, Mako Tanabe, Mio Nakamura, Masahiro Sota, Yuji Kaga, Mitsuya Abe, Norio Tada, Koichi Chida","doi":"10.1088/1361-6498/ad6f19","DOIUrl":"10.1088/1361-6498/ad6f19","url":null,"abstract":"In response to the International Commission on Radiological Protection, which lowered the lens equivalent dose limit, Japan lowered the lens dose limit from 150 mSv y-1to 100 mSv/5 years and 50 mSv y-1, with this new rule taking effect on 1 April 2021. DOSIRIS®is a dosimeter that can accurately measure lens dose. Herein, we investigated lens dose in interventional cardiology physicians 1 year before and after the reduction of the lens dose limit using a neck dosimeter and lens dosimeter measurements. With an increase in the number of cases, both personal dose equivalent at 0.07 mm depth [Hp(0.07), neck dosimeter] and personal dose equivalent at 3 mm depth [Hp(3), lens dosimeter] increased for most of the physicians. The Hp(3) of the lens considering the shielding effect of the Pb glasses using lens dosimeter exceeded 20 mSv y-1for two of the 14 physicians. Protection from radiation dose will become even more important in the future, as these two physicians may experience radiation dose exceeding 100 mSv/5 years. The average dose per procedure increased, but not significantly. There was a strong correlation between the neck dosimeter and lens dosimeter scores, although there was no significant change before and after the lens dose limit was lowered. This correlation was particularly strong for physicians who primarily treated patients. As such, it is possible to infer accurate lens doses from neck doses in physicians who primarily perform diagnostics. However, it is desirable to use a dosimeter that can directly measure Hp(3) because of the high lens dose.","PeriodicalId":50068,"journal":{"name":"Journal of Radiological Protection","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141983757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0