Search Results 1-20 of 677

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An overview of fractional anisotropy as a reliable quantitative measurement for the corticospinal tract (CST) integrity in correlation with a Fugl-Meyer assessment in stroke rehabilitation

Zolkefley Mohd Khairul Izamil , Firwana Younis M. S. , Hatta Hasnettty Zuria Mohamed , Rowbin Christina , Nassir Che Mohd Nasril Che Mohd , Hanafi Muhammad Hafiz , Abdullah Mohd Shafie , Mustapha Muzaimi

… This review aims to give an overview of how various variables of Magnetic Resonance-Diffusion Tensor Imaging (MR-DTI) metrics of fractional anisotropy (FA) can be used as a reliable quantitative measurement and indicator of corticospinal tract (CST) changes, particularly in relation to functional motor outcome correlation with a Fugl-Meyer assessment in stroke rehabilitation. …

Journal of Physical Therapy Science 33(1), 75-83, 2021

J-STAGE
2

Development of Helical Myofiber Tracts in the Human Fetal Heart: Analysis of Myocardial Fiber Formation in the Left Ventricle From the Late Human Embryonic Period Using Diffusion Tensor Magnetic Resonance Imaging

Nishitani Saori , Torii Narisa , Imai Hirohiko , Haraguchi Ryo , Yamada Shigehito , Takakuwa Tetsuya

… 2020-10-09.Background: Detection of the fiber orientation pattern of the myocardium using diffusion tensor magnetic resonance imaging lags ≈12 weeks of gestational age (WGA) behind fetal myocardial remodeling with invasion by the developing coronary vasculature (8 WGA). … We aimed to use diffusion tensor magnetic resonance imaging tractography to characterize the evolution of fiber architecture in the developing human heart from the later embryonic period. …

Journal of the American Heart Association 9(19), 2020-10-20

IR
3

The progress of the technology of magnetic resonance imaging in the field of geriatric psychiatry [in Japanese]

安野史彦

老年精神医学雑誌 31(3), 219-226, 2020-03

Ichushi Web
4

Interesting progress in neuroimaging study [in Japanese]

浅見剛 , 高石政男 , 中村亮太 , 吉見明香 , 吉田晴久

精神科 = Psychiatry 36(1), 106-110, 2020-01

Ichushi Web
5

Cortico-reticular Tract Integrity does not Predict Walking Ability in Acute Stroke Patients: A Diffusion Tensor Imaging Study [in Japanese]

JIN Masafumi , ABE Hiroaki , ENDO Hidenori , FUJIMURA Miki

… Objective: This study intended to explain the relationship between the integrity of the cortico-reticular tract (CRT), a motor tract, and walking ability in stroke patients using diffusion tensor imaging (DTI).Method: We enrolled 41 patients who had undergone DTI. …

Physical Therapy Japan, 2020

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Correlation of Clinical Findings in Acute Spinal Injury Patients with Magnetic Resonance Including Diffusion Tensor Imaging and Fiber Tractography

Singh Roop , Magu Sarita , Baskar Arvinth , Rohilla Rajesh Kumar , Kaur Kiranpreet , Kaur Svareen

… Diffusion tensor imaging (DTI) is one of the modalities used in vivo microstructural assessment of SCI. … The mean apparent diffusion coefficient (ADC) initially was 3.13 (± 2.68) but after 6 months, it decreased to 3.06 (± 2.68) and this change was found to be statistically highly significant (p<0.001). …

Spine Surgery and Related Research 4(4), 305-313, 2020

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7

Secondary Publication：Reduced Diffusion Tensor Fractional Anisotropy in the Left Arcuate Fasciculus of Patients with Aphasia Caused by Acute Cerebral Infarct [in Japanese]

小山哲男 , 道免和久

背景：MRI拡散テンソル画像（DTI）は脳内神経線維を評価する新しい画像診断である．われわれは，急性期脳梗塞により失語症を呈した患者を対象にDTI撮像を行い，同年齢層の対照群との比較のもと，失語症の責任病巣を検討した．方法：初発脳梗塞後14～21日目の失語症患者においてDTIを撮像した．撮像データよりfractional anisotropy …

The Japanese Journal of Rehabilitation Medicine 57(9), 868-876, 2020

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8

White Matter Myelin Changes Related to Long-term Intensive Training in Japanese World-class Gymnasts

ANDICA CHRISTINA , TANGE YUICHI , MITSUHASHI TAKUMI , HARADA MUTSUMI , NAITO HISASHI , HORI MASAAKI , AOKI SHIGEKI , TOMITA HIROYUKI , KAMAGATA KOJI , UCHIDA WATARU , MURATA SYO , HAGIWARA AKIFUMI , FUKUO MAKOTO , WAKI HIDEFUMI , SUGANO HIDENORI

… Diffusion tensor imaging (fractional anisotropy [FA]) and MTsat imaging (myelin volume fraction [MVF]) parameters were compared between J-WCGs and controls using TBSS analysis. …

Juntendo Medical Journal 66(Suppl.1), 21-28, 2020

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9

Advanced Diffusion MRI : Non-Gaussian Analysis for the Clinic [in Japanese]

SUZUKI Yuichi , ABE Osamu

… Conventional diffusion-weighted imaging (DWI) and diffusion tensor imaging (DTI) are assumed to reflect Gaussian distribution models. … They can express simple diffusion phenomena, but not complex diffusion phenomena, in a living body more accurately. …

Japanese Journal of Magnetic Resonance in Medicine 40(3), 91-101, 2020

J-STAGE
10

Deep Learning-based Noise Reduction for Fast Volume Diffusion Tensor Imaging: Assessing the Noise Reduction Effect and Reliability of Diffusion Metrics

Sagawa Hajime , Nakamoto Yuji , Saga Tsuneo , Fushimi Yasutaka , Nakajima Satoshi , Fujimoto Koji , Miyake Kanae Kawai , Numamoto Hitomi , Koizumi Koji , Nambu Masahito , Kataoka Hiroharu

… To assess the feasibility of a denoising approach with deep learning-based reconstruction (dDLR) for fast volume simultaneous multi-slice diffusion tensor imaging of the brain, noise reduction effects and the reliability of diffusion metrics were evaluated with 20 patients. …

Magnetic Resonance in Medical Sciences, 2020

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11

Dissipation in Langevin Equation and Construction of Mobility Tensor from Dissipative Heat Flow

Uneyama Takashi

… We can derive the mobility tensor from the dissipative heat flow, and construct the Langevin equation by combining it with the free energy. … Our method can be applied to various systems, such as the dumbbell model and the diffusion type equation for the density field, to give the coarse-grained dynamic equations for them. …

Nihon Reoroji Gakkaishi 48(2), 65-78, 2020

J-STAGE
12

MRI evaluation of myelopathic pain after spinal cord injury or spinal cord tumor surgery [in Japanese]

Tsuji Osahiko , Matsubayashi Kohei , Horiuchi Yosuke , Komaki Yuji , Hata Junichi , Konomi Tsunehiko , Fujiyoshi Kanehiro , Kosugi Shizuko , Nakamura Masaya

… Besides fMRI and VBM analysis, we developed diffusion MRI techniques which could depict neuronal axons and myelination within the spinal cord ("diffusion tensor tractgraphy" and "myelin map", respectively). …

PAIN RESEARCH 35(1), 34-44, 2020

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13

Functional Assessment of Lumbar Nerve Roots Using Coronal-plane Single-shot Turbo Spin-echo Diffusion Tensor Imaging

Sakai Takayuki , Aoki Yasuchika , Watanabe Atsuya , Yoneyama Masami , Ochi Shigehiro , Miyati Tosiaki

… We investigated the usefulness of diffusion tensor imaging using single-shot turbo spin-echo sequence (TSE–DTI) in detecting the responsible nerve root by multipoint measurements of fractional anisotropy (FA) values. …

Magnetic Resonance in Medical Sciences 19(2), 159-165, 2020

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14

Creation of Stereo Color Anatomical Charts Showing Nerve Fibers in the Cerebral Lobe and Gyrus of the Brain for Use in the MR Examination [in Japanese]

Segawa Hiroo , Miki Akihiro , Yamasaki Tatsuya , Ide Yasuhiro , Mori Yuichirou , Tanii Takashi , Matsumoto Nozomi , Sasakawa Yasuhiro

… Conversely, with diffusion tensor tractography (DTT), we can visually understand the trajectory of nerve fibers through color. …

Japanese Journal of Radiological Technology 76(4), 394-403, 2020

J-STAGE
15

Outcome in Stroke Patients Is Associated with Age and Fractional Anisotropy in the Cerebral Peduncles: A Multivariate Regression Study

Koyama Tetsuo , Uchiyama Yuki , Domen Kazuhisa

… Diffusion tensor fractional anisotropy (FA) in the corticospinal tracts has been used to assess the long-term outcome in stroke patients. … Diffusion tensor FA images were obtained between 14 and 21 days post-stroke. …

Progress in Rehabilitation Medicine 5(0), n/a, 2020

J-STAGE
16

Evaluating the Impact of White Matter Conductivity Anisotropy on Reconstructing EEG Sources by Linearly Constrained Minimum Variance Beamformer

Samadzadehaghdam Nasser , MakkiAbadi Bahador , Masjoodi Sadegh

… In this study, we enhanced the forward model by considering the white matter anisotropic conductivity tensor estimated from diffusion-weighted images. …

Advanced Biomedical Engineering 9(0), 53-61, 2020

J-STAGE
17

Diffusion Tensor Tractography of the Lumbar Nerves before a Direct Lateral Transpsoas Approach [in Japanese]

Eguchi Yawara , Oikawa Yasuhiro , Norimoto Masaki , Ohtori Seiji

… We report the assessment of anatomical relationships between lumbar nerves and vertebral bodies using diffusion tensor imaging (DTI). …

Journal of Spine Research 11(2), 29-37, 2020

J-STAGE Ichushi Web
18

Widely Impaired White Matter Integrity and Altered Structural Brain Networks in Psychogenic Non-Epileptic Seizures

太田深秀 , Daichi Sone , Noriko Sato , Miho OTA , Yukio Kimura , Hiroshi Matsuda

… This study aimed to reveal details of white matter microstructure and alterations in brain structural networks in patients with PNES by using diffusion tensor imaging (DTI) and graph theoretical connectivity analysis.Methods: Seventeen patients with PNES and 26 age- and sex-matched healthy controls were enrolled. …

Neuropsychiatric Disease and Treatment (15), 3549-3555, 2019-12

IR
19

Fate of spin polarization in a relativistic fluid: An entropy-current analysis

Hattori Koichi , Hongo Masaru , Huang Xu-Guang , Matsuo Mamoru , Taya Hidetoshi

… The first and second laws of local thermodynamics constrain possible structures of the constitutive relations including a spin current and the antisymmetric part of the (canonical) energy-momentum tensor. …

Physics Letters B (795), 100-106, 2019-08-10

IR
20

Diffusion tensor imaging of the spinal cord : Imaging biomarker to characterize the severity of cervical myelopathy and predict surgical outcomes [in Japanese]

牧聡 , 國府田正雄 , 北村充広 , 古矢丈雄 , 飯島靖 , 齋藤淳哉 , 宮本卓弥 , 志賀康浩 , 稲毛一秀 , 折田純久 , 山崎正志 , 大鳥精司

日本整形外科学会雑誌 93(7), 445-449, 2019-07

Ichushi Web

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