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Nihon Hoshasen Gijutsu Gakkai zasshi最新文献

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[Health Sciences, Tanabe Laboratory, Graduate School of Health Sciences, Okayama University]. [冈山大学健康科学研究生院田边实验室健康科学]。
Nihon Hoshasen Gijutsu Gakkai zasshi
Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0210
Yoshinori Tanabe
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引用次数: 0
[Report on the FY2025 Medical Imaging Systems Industry Seminar]. 【2025财年医疗成像系统产业研讨会报告】。
Nihon Hoshasen Gijutsu Gakkai zasshi
Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0211
Yukihiro Takumi
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引用次数: 0
[3. Metal Artifact Reduction in X-ray CT]. (3。x线CT金属伪影复位[j]。
Nihon Hoshasen Gijutsu Gakkai zasshi
Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0206
Kazuya Ohashi
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引用次数: 0
[2. CT Image Quality Analysis]. (2。CT图像质量分析[j]。
Nihon Hoshasen Gijutsu Gakkai zasshi
Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0110
Shota Watanabe
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引用次数: 0
[Paper Review: Generative AI and Foundation Models in Medical Image]. [论文综述：生成式AI和医学图像中的基础模型]。
Nihon Hoshasen Gijutsu Gakkai zasshi
Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0202
Yoshikazu Uchiyama
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引用次数: 0
[Introduction]. (介绍)。
Nihon Hoshasen Gijutsu Gakkai zasshi
Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0106
Atsushi Teramoto
{"title":"[Introduction].","authors":"Atsushi Teramoto","doi":"10.6009/jjrt.26-0106","DOIUrl":"https://doi.org/10.6009/jjrt.26-0106","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":"146020976","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
[11. Studies on the Enhancement of Dosimetric Accuracy in Targeted Radionuclide Therapy]. (11。提高放射性核素靶向治疗剂量学准确度的研究[j]。
Nihon Hoshasen Gijutsu Gakkai zasshi
Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0304
Kohei Nakanishi
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引用次数: 0
[Overview of the 2026 Medical Fee Revision and Introduction of Medical Technology Evaluation Proposals from Academic Societies]. 【2026年医疗费用调整概述及引进学术团体医疗技术评价建议】。
Nihon Hoshasen Gijutsu Gakkai zasshi
Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0312
Akinori Kagitani
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引用次数: 0
[Evaluation of Auto-segmentation in the Head and Neck Region]. [头颈部区域自动分割的评价]。
Nihon Hoshasen Gijutsu Gakkai zasshi
Pub Date : 2025-01-01 DOI: 10.6009/jjrt.25-1475
Issei Matsuo, Masayuki Tachibana, Hirofumi Honda, Hiroki Namba

Purpose: The purpose of this study was to perform auto-segmentation on cases in the head and neck region and to elucidate the characteristics of the extraction performance.

Methods: Auto-segmentation was performed on 100 cases in the head and neck region in Japan. The Auto-segmentation contours were compared with the clinical contours. The evaluation structures were the brain, brainstem, spinal cord, mandible, parotid gland, larynx, and eyeballs. DSC and HD were used for similarity evaluation.

Results: Overall, there was a high similarity in the eyeball and spinal cord. However, the lower the contrast with neighboring objects and the greater the variation in shape, the lower the similarity. In addition, metal artifacts lowered the similarity in some areas.

Conclusion: When auto-segmentation extraction was performed, differences were observed in the degree of similarity between organs. Depending on the case and morphology, the accuracy of auto-segmentation extraction varied from site to site, even for the same organ. The characteristics of the extractability found in this study make it useful for the manual modification of contouring.

目的：本研究的目的是对头颈部的病例进行自动分割，并阐明提取性能的特点。方法：对日本头颈部100例患者进行自动分割。将自动分割轮廓与临床轮廓进行比较。评估结构为脑、脑干、脊髓、下颌骨、腮腺、喉部和眼球。采用DSC和HD进行相似性评价。结果：总体而言，眼球与脊髓具有高度的相似性。然而，与相邻物体的对比度越低，形状变化越大，相似性越低。此外，金属制品降低了某些地区的相似性。结论：在进行自动分割提取时，器官之间的相似程度存在差异。根据病例和形态学的不同，自动分割提取的准确性因部位而异，即使是同一器官。本研究发现的可提取性的特点使其对手工修改轮廓有用。
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引用次数: 0
[4. One Question, One Answer about Radiological Protection]. (4。关于辐射防护的一问一答]。
Nihon Hoshasen Gijutsu Gakkai zasshi
Pub Date : 2025-01-01 DOI: 10.6009/jjrt.25-0102
Tomonori Isobe, Yutaro Mori, Yoshiaki Nagai
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引用次数: 0
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