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Japanese Journal of Magnetic Resonance in Medicine最新文献

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OGSE Observation of Micro Restricted Structures [Presidential Award Proceedings] OGSE观察微观受限结构[总统奖程序]
Japanese Journal of Magnetic Resonance in Medicine Pub Date : 2022-05-15 DOI: 10.2463/jjmrm.2021-1746
Hinako Oshiro, Junichi Hata, Naoya Hayashi, Yawara Haga, D. Yoshimaru, Akira Furukawa
{"title":"OGSE Observation of Micro Restricted Structures [Presidential Award Proceedings]","authors":"Hinako Oshiro, Junichi Hata, Naoya Hayashi, Yawara Haga, D. Yoshimaru, Akira Furukawa","doi":"10.2463/jjmrm.2021-1746","DOIUrl":"https://doi.org/10.2463/jjmrm.2021-1746","url":null,"abstract":"","PeriodicalId":349561,"journal":{"name":"Japanese Journal of Magnetic Resonance in Medicine","volume":"65 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115713845","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
Noninvasive Assessment of the Cerebrospinal Fluid and Its Composition by Electric Properties Tomography [Presidential Award Proceedings] 电性质断层扫描对脑脊液及其成分的无创评估[总统奖程序]
Japanese Journal of Magnetic Resonance in Medicine Pub Date : 2022-05-15 DOI: 10.2463/jjmrm.2022-1755
K. Tha, U. Katscher, Xinnan Li, H. Hyodoh
{"title":"Noninvasive Assessment of the Cerebrospinal Fluid and Its Composition by Electric Properties Tomography [Presidential Award Proceedings]","authors":"K. Tha, U. Katscher, Xinnan Li, H. Hyodoh","doi":"10.2463/jjmrm.2022-1755","DOIUrl":"https://doi.org/10.2463/jjmrm.2022-1755","url":null,"abstract":"","PeriodicalId":349561,"journal":{"name":"Japanese Journal of Magnetic Resonance in Medicine","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122064445","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
Time-Dependent Diffusion Using Oscillating-Gradient Spin-echo Sequence in Extra-Axial Brain Tumors [Presidential Award Proceedings] 利用振荡梯度自旋回波序列在轴外脑肿瘤中的时间依赖扩散[总统奖论文集]
Japanese Journal of Magnetic Resonance in Medicine Pub Date : 2022-05-15 DOI: 10.2463/jjmrm.2021-1745
Tomoko Maekawa, M. Hori, K. Murata, K. Kamiya, C. Andica, A. Hagiwara, S. Fujita, K. Kamagata, A. Wada, S. Aoki
{"title":"Time-Dependent Diffusion Using Oscillating-Gradient Spin-echo Sequence in Extra-Axial Brain Tumors [Presidential Award Proceedings]","authors":"Tomoko Maekawa, M. Hori, K. Murata, K. Kamiya, C. Andica, A. Hagiwara, S. Fujita, K. Kamagata, A. Wada, S. Aoki","doi":"10.2463/jjmrm.2021-1745","DOIUrl":"https://doi.org/10.2463/jjmrm.2021-1745","url":null,"abstract":"Oscillating-gradient spin-echo (OGSE) prototype sequences can shorten the eŠective diŠusion time (DeŠ) and add information regarding the internal structure of lesions. The purpose of our study was to investigate the utility of changes in diŠusivity between short and long DeŠ values in distinguishing diŠerent types of extra-axial brain tumors. Twelve patients with meningiomas, 13 with acoustic neuromas, and 11 with pituitary adenomas were scanned using a 3T magnetic resonance (MR) scanner. DiŠusion tensor imaging (DTI) was performed using b-values of 0 and 1000 s/mm2. OGSE imaging using a trapezoid-cosine waveform was performed with DeŠ values of 6.5 and 35.2 ms. The diŠusivity of each tumor was measured after setting a manually deˆned region of interest (ROI). The relative percentage change between the shorter and longer DeŠ values was then calculated. The relative percentage changes of the three tumor types were compared using the Steel-Dwass test. The relative percentage changes of l2, l3, and mean diŠusivity (MD) were signiˆcantly higher in pituitary adenomas than in meningiomas and acoustic neuromas, but not signiˆcantly diŠerent between meningiomas and acoustic neuromas. The dependence of l2, l3, and MD on DeŠ values between 6.5 and 35.2 ms was stronger in pituitary adenomas than in meningiomas and acoustic neuromas, suggesting diŠerences in internal tissue structure. Our results showed that the use of DTI with a shorter DeŠ provides additional information about the microstructure of brain tumors. OGSE imaging may help in the diŠerentiation of diŠerent types of tumors that show atypical imaging ˆndings on conventional MRI.","PeriodicalId":349561,"journal":{"name":"Japanese Journal of Magnetic Resonance in Medicine","volume":"70 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131662473","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
Distortion Correction of Diffusion-Weighted Image by FSL Learning Model Using 3D U-net [Presidential Award Proceedings] 基于3D U-net的FSL学习模型对扩散加权图像的畸变校正[总统奖颁奖典礼]
Japanese Journal of Magnetic Resonance in Medicine Pub Date : 2022-05-15 DOI: 10.2463/jjmrm.2022-1754
Tsuyoshi Ueyama, Keisuke Yoshida, Yuichi Suzuki, H. Iwanaga, O. Abe, Y. Terada
{"title":"Distortion Correction of Diffusion-Weighted Image by FSL Learning Model Using 3D U-net [Presidential Award Proceedings]","authors":"Tsuyoshi Ueyama, Keisuke Yoshida, Yuichi Suzuki, H. Iwanaga, O. Abe, Y. Terada","doi":"10.2463/jjmrm.2022-1754","DOIUrl":"https://doi.org/10.2463/jjmrm.2022-1754","url":null,"abstract":"","PeriodicalId":349561,"journal":{"name":"Japanese Journal of Magnetic Resonance in Medicine","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123181136","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
Comparison of Two Approaches for Diffusional Kurtosis Inference : Synthetic Q-space Learning and DWI Denoising [Presidential Award Proceedings] 扩散峰度推断的两种方法的比较:合成q空间学习和DWI去噪[总统奖程序]
Japanese Journal of Magnetic Resonance in Medicine Pub Date : 2022-05-15 DOI: 10.2463/jjmrm.2021-1750
Koh Sasaki, Nanase Iwabu, Y. Masutani
{"title":"Comparison of Two Approaches for Diffusional Kurtosis Inference : Synthetic Q-space Learning and DWI Denoising [Presidential Award Proceedings]","authors":"Koh Sasaki, Nanase Iwabu, Y. Masutani","doi":"10.2463/jjmrm.2021-1750","DOIUrl":"https://doi.org/10.2463/jjmrm.2021-1750","url":null,"abstract":"","PeriodicalId":349561,"journal":{"name":"Japanese Journal of Magnetic Resonance in Medicine","volume":"25 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131197699","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 Phantom Study of chemoCEST Imaging for the Detection of Anticancer Agents Using Clinical 3T MRI [Presidential Award Proceedings] 使用临床3T MRI检测抗癌药物的化学ocest成像的幻影研究[总统奖程序]
Japanese Journal of Magnetic Resonance in Medicine Pub Date : 2022-05-15 DOI: 10.2463/jjmrm.2021-1753
K. Takumi, Hiroaki Nagano, T. Iwanaga, Hirokazu Otsuka, Y. Fukukura, Yuta Akamine, T. Yoshiura
{"title":"A Phantom Study of chemoCEST Imaging for the Detection of Anticancer Agents Using Clinical 3T MRI [Presidential Award Proceedings]","authors":"K. Takumi, Hiroaki Nagano, T. Iwanaga, Hirokazu Otsuka, Y. Fukukura, Yuta Akamine, T. Yoshiura","doi":"10.2463/jjmrm.2021-1753","DOIUrl":"https://doi.org/10.2463/jjmrm.2021-1753","url":null,"abstract":"","PeriodicalId":349561,"journal":{"name":"Japanese Journal of Magnetic Resonance in Medicine","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121317664","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
ISMRM2021における三木幸雄先生のSenior Fellow選出を記念して 为了纪念三木幸雄先生在ISMRM2021中当选Senior Fellow
Japanese Journal of Magnetic Resonance in Medicine Pub Date : 2021-08-15 DOI: 10.2463/jjmrm.2021-1735
輝 黒田, 隆行 小畠, 育崇 伏見
{"title":"ISMRM2021における三木幸雄先生のSenior Fellow選出を記念して","authors":"輝 黒田, 隆行 小畠, 育崇 伏見","doi":"10.2463/jjmrm.2021-1735","DOIUrl":"https://doi.org/10.2463/jjmrm.2021-1735","url":null,"abstract":"","PeriodicalId":349561,"journal":{"name":"Japanese Journal of Magnetic Resonance in Medicine","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128280904","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
医療機器のMR安全性情報データベースの最新動向 医疗器械MR安全性信息数据库的最新动态
Japanese Journal of Magnetic Resonance in Medicine Pub Date : 2021-08-15 DOI: 10.2463/jjmrm.2021-1732
麻衣子 関口
{"title":"医療機器のMR安全性情報データベースの最新動向","authors":"麻衣子 関口","doi":"10.2463/jjmrm.2021-1732","DOIUrl":"https://doi.org/10.2463/jjmrm.2021-1732","url":null,"abstract":"","PeriodicalId":349561,"journal":{"name":"Japanese Journal of Magnetic Resonance in Medicine","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129405554","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
Physical Reintroduction to MRI: Complete Understanding of MRI from Bloch Equations 物理重新介绍MRI:从Bloch方程完全理解MRI
Japanese Journal of Magnetic Resonance in Medicine Pub Date : 2021-08-15 DOI: 10.2463/JJMRM.2021-1733
K. Kose
{"title":"Physical Reintroduction to MRI: Complete Understanding of MRI from Bloch Equations","authors":"K. Kose","doi":"10.2463/JJMRM.2021-1733","DOIUrl":"https://doi.org/10.2463/JJMRM.2021-1733","url":null,"abstract":"MRI が提案されてから,約 50 年が経過した が,MRI における撮像法,パルスシーケン ス,画像再構成手法は,年々,高度化してお り,それらをフォローするのは,専門の研究者 でも困難となってきている.しかしながら,幸 か不幸か,MRI の基礎方程式である Bloch 方 程式1)は,MRI の提案以来,全く変化してい ない.そこで,MRI の完全な理解を行うに は,Bloch 方程式などの基礎方程式の性質をよ く理解し,さらに,それを用いた計算手法を理 解するのが一番の近道である.というのは,現 在,十分な計算資源があれば,Bloch 方程式を 用いて MR 現象を再現し,実機と変わらない MR 画像が再現できるからである2)~5).そこ で,本稿では,Bloch 方程式から MRI を数理 的に理解する仕組みを説明したい.なお,本稿 は,第 48 回日本磁気共鳴医学会大会の教育講 演に基づくものであり,講演動画は,ウェブ上 で公開されている6).","PeriodicalId":349561,"journal":{"name":"Japanese Journal of Magnetic Resonance in Medicine","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125009234","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 Brain Pulsation on ADC Change During Cardiac Cycle : Analysis Using Bulk-Motion-Compensated Diffusion Encoding [Presidential Award Proceedings] 在心脏周期中，脑脉动对ADC变化的影响:使用大体积运动补偿扩散编码的分析[总统奖程序]
Japanese Journal of Magnetic Resonance in Medicine Pub Date : 2021-05-15 DOI: 10.2463/JJMRM.2020-1727
R. Okamoto, T. Miyati, Naoki Ohno, Yuya Yasuda, M. Uehara, R. Yagawa, Yu Ueda, M. Cauteren, M. Mase, T. Gabata, Satoshi Kobayashi
{"title":"Effect of Brain Pulsation on ADC Change During Cardiac Cycle : Analysis Using Bulk-Motion-Compensated Diffusion Encoding [Presidential Award Proceedings]","authors":"R. Okamoto, T. Miyati, Naoki Ohno, Yuya Yasuda, M. Uehara, R. Yagawa, Yu Ueda, M. Cauteren, M. Mase, T. Gabata, Satoshi Kobayashi","doi":"10.2463/JJMRM.2020-1727","DOIUrl":"https://doi.org/10.2463/JJMRM.2020-1727","url":null,"abstract":"","PeriodicalId":349561,"journal":{"name":"Japanese Journal of Magnetic Resonance in Medicine","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132207310","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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