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Nihon Hoshasen Gijutsu Gakkai zasshi最新文献

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[4. Radiation Exposure in Computed Tomography: Fundamentals and Personalized Dose Assessment]. (4。计算机断层扫描中的辐射暴露：基础和个性化剂量评估]。
Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0308
Kosuke Matsubara
{"title":"[4. Radiation Exposure in Computed Tomography: Fundamentals and Personalized Dose Assessment].","authors":"Kosuke Matsubara","doi":"10.6009/jjrt.26-0308","DOIUrl":"https://doi.org/10.6009/jjrt.26-0308","url":null,"abstract":"","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 3","pages":"65-71"},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147500870","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
[Paper Review: Correction and Utilization of the Washout Effect in Range-verification PET for Particle Therapy]. [论文综述：粒子治疗中距离验证PET冲洗效应的修正与利用]。
Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0401
Mitsutaka Kanazawa
{"title":"[Paper Review: Correction and Utilization of the Washout Effect in Range-verification PET for Particle Therapy].","authors":"Mitsutaka Kanazawa","doi":"10.6009/jjrt.26-0401","DOIUrl":"https://doi.org/10.6009/jjrt.26-0401","url":null,"abstract":"","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147724974","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
[8. Photon-counting CT: Principles and Clinical Applications-Advancing CT Imaging through X-ray Detector Innovation]. (8。光子计数CT：原理与临床应用——通过x射线探测器创新推进CT成像[j]。
Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0708
Yukihiro Enchi
{"title":"[8. Photon-counting CT: Principles and Clinical Applications-Advancing CT Imaging through X-ray Detector Innovation].","authors":"Yukihiro Enchi","doi":"10.6009/jjrt.26-0708","DOIUrl":"https://doi.org/10.6009/jjrt.26-0708","url":null,"abstract":"","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148537788","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
[The 59th Annual Meeting of TWSRT and the International Conference of Medical Imaging]. [第59届TWSRT年会暨医学影像国际会议]。
Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0705
Shinya Misawa, Kenji Yasue, Mei Hashimoto
{"title":"[The 59th Annual Meeting of TWSRT and the International Conference of Medical Imaging].","authors":"Shinya Misawa, Kenji Yasue, Mei Hashimoto","doi":"10.6009/jjrt.26-0705","DOIUrl":"https://doi.org/10.6009/jjrt.26-0705","url":null,"abstract":"","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148537828","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
[Fujibuchi Labolatory, Radiological Protection in Medicine, Faculty of Medical Sciences, Department of Health Sciences, Division of Medical Quantum Sciences, Kyushu University]. [九州大学健康科学系医学量子科学部医学科学院医学放射防护藤渊实验室]。
Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0806
Toshioh Fujibuchi
{"title":"[Fujibuchi Labolatory, Radiological Protection in Medicine, Faculty of Medical Sciences, Department of Health Sciences, Division of Medical Quantum Sciences, Kyushu University].","authors":"Toshioh Fujibuchi","doi":"10.6009/jjrt.26-0806","DOIUrl":"https://doi.org/10.6009/jjrt.26-0806","url":null,"abstract":"","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148802654","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
[6. Motion Managements and 4D Dose Evaluations for Moving Targets in Particle Therapy]. (6。粒子治疗中运动目标的运动管理和4D剂量评估]。
Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0810
Yuki Tominaga
{"title":"[6. Motion Managements and 4D Dose Evaluations for Moving Targets in Particle Therapy].","authors":"Yuki Tominaga","doi":"10.6009/jjrt.26-0810","DOIUrl":"https://doi.org/10.6009/jjrt.26-0810","url":null,"abstract":"","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148802681","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
[Concluding Remarks: Evolution of X-ray Computed Tomography Systems]. [结束语：x射线计算机断层扫描系统的发展]。
Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0807
Takashi Hoshino
{"title":"[Concluding Remarks: Evolution of X-ray Computed Tomography Systems].","authors":"Takashi Hoshino","doi":"10.6009/jjrt.26-0807","DOIUrl":"https://doi.org/10.6009/jjrt.26-0807","url":null,"abstract":"","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148802711","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
[Report on JIRA Environmental Seminar 2025]. [2025年JIRA环境研讨会报告]。
Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0105
Tomomi Kihara
{"title":"[Report on JIRA Environmental Seminar 2025].","authors":"Tomomi Kihara","doi":"10.6009/jjrt.26-0105","DOIUrl":"https://doi.org/10.6009/jjrt.26-0105","url":null,"abstract":"","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146020903","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
[Metal Artifact Assessment of Multiple MRI-conditional Pacing and Defibrillation Leads: A Phantom Study Comparing Different Manufacturers]. [多个mri条件起搏和除颤导联的金属伪影评估：比较不同制造商的幻影研究]。
Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-1592
Shiro Masuda, Shuhei Ogita, Haruka Aoyagi, Tomofumi Misaka, Shigeyoshi Saito, Hajime Sagawa, Toru Shinohe
{"title":"[Metal Artifact Assessment of Multiple MRI-conditional Pacing and Defibrillation Leads: A Phantom Study Comparing Different Manufacturers].","authors":"Shiro Masuda, Shuhei Ogita, Haruka Aoyagi, Tomofumi Misaka, Shigeyoshi Saito, Hajime Sagawa, Toru Shinohe","doi":"10.6009/jjrt.26-1592","DOIUrl":"10.6009/jjrt.26-1592","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to evaluate metal artifacts in cardiac magnetic resonance imaging using four pacing leads and four defibrillation leads and to clarify the effects of lead differences on image quality.</p><p><strong>Methods: </strong>Each lead was fixed in a phantom and aligned parallel to the X-, Y-, and Z-axis. Short-axis images were acquired using balanced steady-state free precession (balanced SSFP) and fast gradient echo (FGRE). Artifact area (S<sub>0</sub>) and increase rate (ΔS) were calculated. For each lead, the maximum value among the three axes was used to perform inter-lead comparisons. Visual assessment was also performed using short-axis images.</p><p><strong>Results: </strong>In the physical evaluation, both S<sub>0</sub> and ΔS tended to be greater with FGRE than with balanced SSFP for all leads. The median (range) of the maximum S<sub>0</sub> and ΔS values among the three axes for each lead were 152.02 mm<sup>2</sup> (119.17-183.49) and 5024.27% (4562.10-6956.83), respectively, for pacing leads, and 114.43 mm<sup>2</sup> (79.51-148.11) and 2073.16% (1398.30-3561.46), respectively, for defibrillation leads. In the visual assessment, metal artifacts were significantly larger in some defibrillation leads in both balanced SSFP and FGRE.</p><p><strong>Conclusion: </strong>Pacing leads showed relatively small inter-lead differences, whereas some defibrillation leads exhibited inter-lead variability, suggesting the involvement of structural factors.</p>","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148159290","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
[Estimation of Air Kerma-area Product Using Real-time Dosimeter in Mobile X-ray Fluoroscopy System]. [在移动x射线透视系统中使用实时剂量计估算空气克尔玛面积产品]。
Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-1636
Junichi Taoka, Hideyuki Kato, Tetsuharu Kasahara, Kenta Tako, Takashi Iimori
{"title":"[Estimation of Air Kerma-area Product Using Real-time Dosimeter in Mobile X-ray Fluoroscopy System].","authors":"Junichi Taoka, Hideyuki Kato, Tetsuharu Kasahara, Kenta Tako, Takashi Iimori","doi":"10.6009/jjrt.26-1636","DOIUrl":"https://doi.org/10.6009/jjrt.26-1636","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to estimate the air kerma-area product of a mobile X-ray fluoroscopy system by using a real-time dosimeter in situations where an area dosimeter is not available.</p><p><strong>Methods: </strong>A real-time dosimeter was mounted on the C-arm of a mobile X-ray fluoroscopy system. Using an ionization dosimeter as a reference, we evaluated the correlation between the air kerma-area product measured by the fluoroscopy system and the readings obtained from the mounted real-time dosimeter. Tube voltage was varied from 60 to 110 kV in 10-kV increments, and phantom thickness varied from 5 to 20 cm in 5-cm increments. In addition, the irradiation field area was adjusted across five levels, ranging from 168.1 to 75.5 cm<sup>2</sup>.</p><p><strong>Results: </strong>A strong linear relationship was observed between the real-time dosimeter readings x-axis and the air kerma-area product values y-axis, expressed as the regression equation y=36.181x+0.2188. The correlation coefficient was r=0.99.</p><p><strong>Conclusion: </strong>This study suggests that the air kerma-area product can be estimated by placing a real-time dosimeter on a mobile X-ray fluoroscopy system without an area dosimeter.</p>","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148414126","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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