Nihon Hoshasen Gijutsu Gakkai zasshi最新文献_第6页

[4. Take a Radiography of Bone Fracture and Dislocation]. (4。拍一张骨折脱位的x线片。

Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0509

Tsuyoshi Yokoyama

引用次数: 0

[12. Dosimetry for Targeted Radionuclide Therapy Based on Monte Carlo Simulation]. (12。基于蒙特卡罗模拟的放射性核素靶向治疗剂量测定[j]。

Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0407

Tatsuhiko Sato

引用次数: 0

[Analysis of Near-miss Incidents and Their Causes during Clinical Training for Radiological Technologist Students]. 放射科专业学生临床培训中的未遂事件及原因分析

Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-1605

Yuji Komatsu, Yui Takemoto, Natsumi Kamiya, Shiho Hashimoto, Mei Matsushita, Marina Yamamura, Wakana Yokotani, Shuji Abe

{"title":"[Analysis of Near-miss Incidents and Their Causes during Clinical Training for Radiological Technologist Students].","authors":"Yuji Komatsu, Yui Takemoto, Natsumi Kamiya, Shiho Hashimoto, Mei Matsushita, Marina Yamamura, Wakana Yokotani, Shuji Abe","doi":"10.6009/jjrt.26-1605","DOIUrl":"10.6009/jjrt.26-1605","url":null,"abstract":"Purpose: This study aimed to clarify the actual conditions of near-miss incidents experienced by radiological technology students during clinical training and to analyze the contributing factors, to provide suggestions for future safety education and curriculum development.Methods: An anonymous self-administered questionnaire was conducted among students and graduates of a radiological technology training program. The survey items included the specific nature of the incidents, background factors at the time of occurrence, the modality in which the incidents occurred, and the discoverer of the incidents. Quantitative data were analyzed using descriptive statistics and cross-tabulation, while qualitative responses were analyzed using content analysis.Results: A total of 75 valid responses were obtained. The reported near-miss incidents were diverse, with many related to basic confirmation procedures such as patient misidentification, entanglement of tubes and cables, and failure to remove metallic items. Most of the incidents occurred in general radiography and computed tomography, accounting for approximately 70% of all reports. In terms of discoverers, the majority of incidents were noticed by the students themselves (58.3%), followed by clinical instructors (30.5%).Conclusion: Near-miss experiences serve as valuable educational resources in student training. Redesigning safety education by focusing on common patterns shared with cases reported by licensed professionals, and systematizing these experiences into structured learning modules, may help enhance both the quality of education and safety awareness in radiological practice.","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145919340","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

[Validity of the Test Bolus Tracking Technique in Head CT Angiography: Validation of Accuracy Using 4D CT Data in Patients with Subarachnoid Hemorrhage]. [试验丸跟踪技术在头部CT血管造影中的有效性：利用4D CT数据验证蛛网膜下腔出血患者的准确性]。

Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-1638

Tomomi Ohmura, Yuki Shinohara, Yuichiro Sato, Fumiaki Sasaki, Takato Ishida, Mamoru Kato

{"title":"[Validity of the Test Bolus Tracking Technique in Head CT Angiography: Validation of Accuracy Using 4D CT Data in Patients with Subarachnoid Hemorrhage].","authors":"Tomomi Ohmura, Yuki Shinohara, Yuichiro Sato, Fumiaki Sasaki, Takato Ishida, Mamoru Kato","doi":"10.6009/jjrt.26-1638","DOIUrl":"https://doi.org/10.6009/jjrt.26-1638","url":null,"abstract":"Purpose: This study aimed to evaluate the validity of the test bolus tracking (TBT) method for head computed tomography (CT) angiography (CTA) using four-dimensional (4D) CT data in patients with subarachnoid hemorrhage (SAH).Methods: We analyzed 39 patients who developed SAH and underwent 4D CT. Based on the imaging protocol, patients were classified into a test-injection (TI) group and a TBT group. Time-enhancement curves (TECs) of the M1 segment of the middle cerebral artery were measured. Validation was performed by assessing the concordance between the TEC peak time and the peak scan timing set on 4D CT (peak concordance rate).Results: The median TEC peak time for all patients was 10.7 s (range: 9.2-17.1 s). The peak concordance rate was 100% in the TI group and 76% in the TBT group. In TBT cases where the peaks did not match, the scan start was determined prematurely using bolus tracking during the test injection. Univariate analysis comparing the TBT group with the TI group showed that the TBT group had a lower concordance rate and shorter examination time (P<0.05).Conclusion: The results of this study suggest that, if the TBT method can accurately determine the peak time of the test injection, it is a valid technique for head CTA.","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":"148622476","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

[Effect of Different Look Up Tables on Contrast Effect in Lower Limb Angiography Using the Frequency Subtraction Method]. 【不同查表对频率减法下肢血管造影造影效果的影响】。

Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-1630

Ryo Sekiguchi, Kazuya Mori, Masato Suzaki

{"title":"[Effect of Different Look Up Tables on Contrast Effect in Lower Limb Angiography Using the Frequency Subtraction Method].","authors":"Ryo Sekiguchi, Kazuya Mori, Masato Suzaki","doi":"10.6009/jjrt.26-1630","DOIUrl":"10.6009/jjrt.26-1630","url":null,"abstract":"Purpose: The purpose of this study was to investigate the impact of different look up tables (LUTs) on contrast enhancement in lower extremity angiography using the frequency subtraction method.Methods: A lower extremity vascular phantom was constructed, and contrast medium concentrations of 100%, 75%, 50%, and 25% were prepared. Imaging was performed using the frequency subtraction method, and each image was processed with different LUTs (linear, A, and C). The linear LUT at 100% concentration (linear-100%) served as the control. Contrast was quantified using profile curves, and subjective image quality was assessed by the degradation category rating method.Results: In the central region of the bone, LUT A-100% and C-100% yielded higher contrast values compared with the control. At the bone margins, A-100%, A-75%, and A-50% demonstrated greater contrast enhancement. Subjective evaluation showed that scores for A-50% and C-50% in the central bone region exceeded the tolerance limit. In the cortical bone region, scores for A-75% and C-50% exceeded the acceptable limit.Conclusion: It was demonstrated that appropriate modification of LUTs in the frequency subtraction method contributes to improved contrast enhancement.","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147984669","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

[Feasibility of Cerebral Blood Flow Quantification via Biexponential Diffusion Analysis Using Phase-contrast MRI]. [利用相位对比MRI双指数扩散分析定量脑血流的可行性]。

Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-1637

Kazuki Tani, Ryotaro Jingu, Yasunari Kamisaka, Yuko Saruwatari, Yoko Nishinokubi, Eiji Koda, Toshiro Inoue, Tokitaka Ueno, Koichi Takano, Kengo Yoshimitsu

{"title":"[Feasibility of Cerebral Blood Flow Quantification via Biexponential Diffusion Analysis Using Phase-contrast MRI].","authors":"Kazuki Tani, Ryotaro Jingu, Yasunari Kamisaka, Yuko Saruwatari, Yoko Nishinokubi, Eiji Koda, Toshiro Inoue, Tokitaka Ueno, Koichi Takano, Kengo Yoshimitsu","doi":"10.6009/jjrt.26-1637","DOIUrl":"10.6009/jjrt.26-1637","url":null,"abstract":"Purpose: The aim of this study was to evaluate the feasibility of noninvasive cerebral blood flow (CBF) measurement by quantifying the flow-related parameter obtained from intravoxel incoherent motion (IVIM) imaging using phase contrast imaging.Methods: Fifteen healthy volunteers (10 men and 5 women; age, 40±12 years) were enrolled in this study. The product of perfusion fraction f and pseudo-diffusion coefficient D*, fD* from IVIM were calculated. The fD* quantified using phase contrast imaging (fD*-CBF), CBF from arterial spin labeling (ASL-CBF), and fD* were measured in the gray matter (GM) and the white matter (WM) regions.Results: The fD*-CBF values were significantly lower than ASL-CBF values (P<0.001) in GM and WM regions. In the GM regions, the fD*-CBF values were significantly correlated with ASL-CBF values (rho=0.82, P<0.001). Additionally, Bland-Altman plot indicated good agreement between fD*-CBF and ASL-CBF. There was no significant correlation between fD* and ASL-CBF in GM and WM regions (rho=0.33, P=0.23; rho=0.14, P=0.62).Conclusion: Our results suggest that fD*-CBF has potential as a noninvasive CBF measurement.","PeriodicalId":74309,"journal":{"name":"Nihon Hoshasen Gijutsu Gakkai zasshi","volume":"82 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147984721","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

[A Questionnaire Survey on the Current Status of Magnetic Field Experience in Magnetic Resonance Imaging among Nurses]. 护士磁共振成像磁场体验现状问卷调查

Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-1681

Yuuki Yoshimura, Miu Nagahiro

引用次数: 0

[Simultaneous Optimization of Signal Difference to Noise Ratio and Mean Glandular Dose for Automatic Exposure Control Setting in the IAEA Quality Assurance Programme for Digital Mammography]. [同时优化国际原子能机构数字乳房x线摄影质量保证计划中自动暴露控制设置的信噪比和平均腺体剂量]。

Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-1626

Taizo Sanada, Rie Ishii, Mie Ishii, Keiko Arao, Akira Yoshida

引用次数: 0

[In Memory of Professor Shigeki Aoki, Former Representative Director of the Japan Radiological Society (JRC)]. [纪念日本放射学会前代表理事青木茂树教授]。

Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0702

Takayuki Ishida

引用次数: 0

[5. Imaging Techniques for Patients in Wheelchairs or on Stretchers]. (5。轮椅或担架上病人的成像技术]。

Nihon Hoshasen Gijutsu Gakkai zasshi Pub Date : 2026-01-01 DOI: 10.6009/jjrt.26-0606

Masashi Abe

引用次数: 0