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24 results on '"Murata, Syo"'

1. 放射線災害分野に関するe-learning研修システムの開発とその教育効果

Author

ARAI, Tomohiro, primary, ISHIHARA, Toshihiro, additional, WATANABE, Yuichi, additional, TAKEDA, Satoshi, additional, FUKAMIZU, Yoshiya, additional, ISHIDA, Takato, additional, IIJIMA, Hayate, additional, INABA, Mamoru, additional, KONISHI, Eiichiro, additional, KANEKO, Takayuki, additional, YOSHIDA, Junichi, additional, KITAGAWA, Tomohiko, additional, NASUKAWA, Atsumu, additional, NADA, Takanori, additional, TAKAHASHI, Hiroki, additional, OYAMA, Hayato, additional, KOIKE, Takahisa, additional, MURATA, Syo, additional, EBATA, Kiyokadzu, additional, and KANEKO, Junichi, additional

Published
2024
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3. Age-Related Changes in Relaxation Times, Proton Density, Myelin, and Tissue Volumes in Adult Brain Analyzed by 2-Dimensional Quantitative Synthetic Magnetic Resonance Imaging

Author

Hagiwara, Akifumi, Fujimoto, Kotaro, Kamagata, Koji, Murata, Syo, Irie, Ryusuke, Kaga, Hideyoshi, Someya, Yuki, Andica, Christina, Fujita, Shohei, Kato, Shimpei, Fukunaga, Issei, Wada, Akihiko, Hori, Masaaki, Tamura, Yoshifumi, Kawamori, Ryuzo, Watada, Hirotaka, and Aoki, Shigeki

Published
2020
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8. Using modulated and smoothed data improves detectability of volume difference in group comparison, but reduces accuracy with atlas-based volumetry using Statistical Parametric Mapping 12 software

Author

Goto, Masami, primary, Murata, Syo, additional, Hori, Masaaki, additional, Nemoto, Kiyotaka, additional, Kamatgata, Koji, additional, Aoki, Shigeki, additional, Abe, Osamu, additional, Sakamoto, Hajime, additional, Sakano, Yasuaki, additional, Kyogoku, Shinsuke, additional, and Daida, Hiroyuki, additional

Published
2021
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9. Connectome analysis of male world‐class gymnasts using probabilistic multishell, multitissue constrained spherical deconvolution tracking

Author

Tomita, Hiroyuki, primary, Kamagata, Koji, additional, Andica, Christina, additional, Uchida, Wataru, additional, Fukuo, Makoto, additional, Waki, Hidefumi, additional, Sugano, Hidenori, additional, Tange, Yuichi, additional, Mitsuhashi, Takumi, additional, Lukies, Matthew, additional, Hagiwara, Akifumi, additional, Fujita, Shohei, additional, Wada, Akihiko, additional, Akashi, Toshiaki, additional, Murata, Syo, additional, Harada, Mutsumi, additional, Aoki, Shigeki, additional, and Naito, Hisashi, additional

Published
2021
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10. Effect of hybrid of compressed sensing and parallel imaging on the quantitative values measured by 3D quantitative synthetic MRI: A phantom study

Author

Murata, Syo, primary, Hagiwara, Akifumi, additional, Fujita, Shohei, additional, Haruyama, Takuya, additional, Kato, Shimpei, additional, Andica, Christina, additional, Kamagata, Koji, additional, Goto, Masami, additional, Hori, Masaaki, additional, Yoneyama, Masami, additional, Hamasaki, Nozomi, additional, Hoshito, Haruyoshi, additional, and Aoki, Shigeki, additional

Published
2021
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11. Comparison of Brain Volume Measurements Made with 0.3- and 3-T MR Imaging

Author

Murata, Syo, primary, Hagiwara, Akifumi, additional, Kaga, Hideyoshi, additional, Someya, Yuki, additional, Nemoto, Kiyotaka, additional, Goto, Masami, additional, Kamagata, Koji, additional, Irie, Ryusuke, additional, Hori, Masaaki, additional, Andica, Christina, additional, Wada, Akihiko, additional, Kumamaru, Kanako Kunishima, additional, Shimoji, Keigo, additional, Otsuka, Yujiro, additional, Hoshito, Haruyoshi, additional, Tamura, Yoshifumi, additional, Kawamori, Ryuzo, additional, Watada, Hirotaka, additional, and Aoki, Shigeki, additional

Published
2021
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12. Using modulated and smoothed data improves detectability of volume difference in group comparison, but reduces accuracy with atlas-based volumetry using Statistical Parametric Mapping 12 software.

Author

Goto, Masami, Murata, Syo, Hori, Masaaki, Nemoto, Kiyotaka, Kamatgata, Koji, Aoki, Shigeki, Abe, Osamu, Sakamoto, Hajime, Sakano, Yasuaki, Kyogoku, Shinsuke, and Daida, Hiroyuki

Abstract

Background: Atlas-based volumetry using three-dimensional T1-weighted (3D-T1W) magnetic resonance imaging (MRI) has been used previously to evaluate the volumes of intracranial tissues. Purpose: To evaluate the detectability of volume difference and accuracy for volumetry using smoothed data with an atlas-based method. Material and Methods: Twenty healthy individuals and 24 patients with idiopathic normal-pressure hydrocephalus (iNPH) underwent 3-T MRI, and sagittal 3D-T1W images were obtained in all participants. Signal values (as tissue probability) of voxels in five segmented data types (gray matter, white matter, cerebrospinal fluid [CSF], skull, soft tissue) derived from the 3D-T1W images with SPM 12 software were assigned simulated 3D-T1W signal intensities to each tissue image. The assigned data were termed "reference data." We created a reference 3 D-T1W image that included the reference data of all five tissue types. Standard volumes were measured for the reference CSF data with region of interest of lateral ventricle in native space, and measured volumes were obtained for non-smoothed and smoothed-modulated data. Detectability was evaluated between measured volumes in the healthy control and iNPH groups. Accuracy was evaluated as the difference between the mean measured and standard volumes. Results: In group comparison of measured volumes between the healthy control and iNPH groups, the lowest P value was for smoothed-modulated CSF data. In both groups, the largest difference from the standard volume was found for the mean of the measured volumes for smoothed-modulated CSF data. Conclusion: Our study shows that using smoothed data can improve detectability in group comparison. However, using smoothed data reduces the accuracy of volumetry. [ABSTRACT FROM AUTHOR]

Published
2022
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13. Brain White-Matter Degeneration Due to Aging and Parkinson Disease as Revealed by Double Diffusion Encoding

Author

Kamiya, Kouhei, primary, Kamagata, Koji, additional, Ogaki, Kotaro, additional, Hatano, Taku, additional, Ogawa, Takashi, additional, Takeshige-Amano, Haruka, additional, Murata, Syo, additional, Andica, Christina, additional, Murata, Katsutoshi, additional, Feiweier, Thorsten, additional, Hori, Masaaki, additional, Hattori, Nobutaka, additional, and Aoki, Shigeki, additional

Published
2020
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14. Neurocognitive and psychiatric disorders‐related axonal degeneration in Parkinson's disease

Author

Andica, Christina, primary, Kamagata, Koji, additional, Hatano, Taku, additional, Saito, Yuya, additional, Uchida, Wataru, additional, Ogawa, Takashi, additional, Takeshige‐Amano, Haruka, additional, Hagiwara, Akifumi, additional, Murata, Syo, additional, Oyama, Genko, additional, Shimo, Yashushi, additional, Umemura, Atsushi, additional, Akashi, Toshiaki, additional, Wada, Akihiko, additional, Kumamaru, Kanako K., additional, Hori, Masaaki, additional, Hattori, Nobutaka, additional, and Aoki, Shigeki, additional

Published
2020
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15. White Matter Myelin Changes Related to Long-term Intensive Training in Japanese World-class Gymnasts

Author

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

Published
2020
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17. Age-Related Changes in Relaxation Times, Proton Density, Myelin, and Tissue Volumes in Adult Brain Analyzed by 2-Dimensional Quantitative Synthetic Magnetic Resonance Imaging.

Author

Hagiwara, Akifumi, Fujimoto, Kotaro, Kamagata, Koji, Murata, Syo, Irie, Ryusuke, Kaga, Hideyoshi, Someya, Yuki, Andica, Christina, Fujita, Shohei, Kato, Shimpei, Fukunaga, Issei, Wada, Akihiko, Hori, Masaaki, Tamura, Yoshifumi, Kawamori, Ryuzo, Watada, Hirotaka, and Aoki, Shigeki

Published
2021
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18. SMS-TSE sequenceとConventional TSE sequenceのMT効果の比較・検討

Author

Murata, Syo, Murata, Katsutoshi, Hori, Masaaki, Kamagata, Koji, Suzuki, Michimasa, K, Kumamaru Kanako, Irie, Ryusuke, Sato, Shuji, Hamasaki, Nozomi, Fukunaga, Issei, Tsuruta, Kohei, Uchioke, Saori, Hoshito, Haruyoshi, and Aoki, Shigeki

Abstract

Multi-band sequence can obtain multi slices simultaneously. Relation between simultaneous multi-slice (SMS) turbo spin echo and MT effect were investigated by changing slice excitation time interval. As a result, SMS showed larger MT effect than conventional technique., 第45回日本磁気共鳴医学会大会

Published
2017

19. NODDIにおけるintracellular volume fractionの拡散時間依存性

Author

Hori, Masaaki, Tsuruta, Kohei, Kamiya, Kohei, Irie, Ryusuke, Andica, Christina, Suzuki, Michimasa, Maekawa, Tomoko, Koshino, Saori, Fukunaga, Issei, Murata, Syo, Murata, Katsutoshi, and Aoki, Shigeki

Subjects
sense organs, skin and connective tissue diseases
Abstract

We investigated time dependence changes of intracellular volume fractin (IVCF) and intraneurite volume fraction (INVF) using oscillationg gradient spin-echo sequence. Both ICVF and INVF decreased with longer diffusion time and showed weak correlation with changes of apparent diffusion coefficient., 第45回日本磁気共鳴医学会大会

Published
2017

24. Comparison of Brain Volume Measurements Made with 0.3- and 3-T MR Imaging.

Author

Murata S, Hagiwara A, Kaga H, Someya Y, Nemoto K, Goto M, Kamagata K, Irie R, Hori M, Andica C, Wada A, Kumamaru KK, Shimoji K, Otsuka Y, Hoshito H, Tamura Y, Kawamori R, Watada H, and Aoki S

Subjects
Brain diagnostic imaging, Humans, Reproducibility of Results, Imaging, Three-Dimensional methods, Magnetic Resonance Imaging methods
Abstract

The volumes of intracranial tissues of 40 healthy volunteers acquired from 0.3- and 3-T scanners were compared using intraclass correlation coefficients, correlation analyses, and Bland-Altman analyses. We found high intraclass correlation coefficients, high Pearson's correlation coefficients, and low percentage biases in all tissues and most of the brain regions, although small differences were observed in some areas. These findings may support the validity of brain volumetry with low-field magnetic resonance imaging.

Published
2022
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