Výsledky vyhledávání - "Hiroyuki, Kabasawa"

MR Imaging in the 21st Century: Technical Innovation over the First Two Decades

Autor: Hiroyuki Kabasawa

Publikováno v: Magnetic Resonance in Medical Sciences. 21:71-82

Clinical MRI systems have continually improved over the years since their introduction in the 1980s. In MRI technical development, the developments in each MRI system component, including data acquisition, image reconstruction, and hardware systems,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39c4442b934bf0130f3dfb38da5ac9d4
https://doi.org/10.2463/mrms.rev.2021-0011

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Impact of deep learning reconstruction on intracranial 1.5 T magnetic resonance angiography

Autor: Koichiro Yasaka, Naoki Yoshioka, Taku Tajima, Rintaro Miyo, Masaaki Akahane, Osamu Abe, Hiroyuki Akai, Hiroyuki Kabasawa, Kuni Ohtomo, Shigeru Kiryu, Haruto Sugawara

Publikováno v: Japanese Journal of Radiology. 40:476-483

Purpose The purpose of this study was to evaluate whether deep learning reconstruction (DLR) improves the image quality of intracranial magnetic resonance angiography (MRA) at 1.5 T. Materials and methods In this retrospective study, MRA images of 40

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0beba7915b004e750f2e7ddf4d27f02a
https://doi.org/10.1007/s11604-021-01225-2

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Comparison of Silent Navigator Waveform Generation Methods

Autor: Hiroyuki Kabasawa, Atsushi Nozaki, Masahiro Jinzaki, Yuji Iwadate, Yoshinobu Nunokawa, Shigeo Okuda

Publikováno v: Magnetic Resonance in Medical Sciences

The silent navigator technique utilizes a non-selective excitation and an appropriate respiratory waveform generation method is necessary for an accurate motion detection. We compared three methods for silent navigator waveform generation. The profil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba986905373ae5f45ef5a68258dadb16
https://doi.org/10.2463/mrms.tn.2018-0168

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Reproducibility and Variability of Quantitative Cerebral Blood Flow Measured by Multi-delay 3D Arterial Spin Labeling According to Sex and Menstrual Cycle

Autor: Hiroyuki Kabasawa, Masafumi Harada, Yoshitake Takahashi, Maki Otomo, Takashi Abe, Yuki Matsumoto, Mitsuharu Miyoshi, Yuki Kanazawa, Yumi Abe

Publikováno v: The journal of medical investigation : JMI. 67(3.4)

Purpose : To determine the reproducibility of corrected quantitative cerebral blood flow (qCBF) through measurement of transit flow time using multi-delay three-dimensional pseudo-continuous arterial spin labeling (pCASL) in healthy men and women and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1aa64f74138deb671c49b0092590457
https://pubmed.ncbi.nlm.nih.gov/33148909

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Optimal Plane Selection for Measuring Post-prandial Blood Flow Increase within the Superior Mesenteric Artery: Analysis Using 4D Flow and Computational Fluid Dynamics

Autor: Hiroyuki Kabasawa, Masanori Kawate, Harumi Sakahara, Tetsuya Wakayama, Masataka Sugiyama, Masaki Terada, Naoki Ooishi, Yasuo Takehara, Oliver Wieben, Atsushi Nozaki, Kevin M. Johnson, Haruo Isoda, Shinji Naganawa

Publikováno v: Magnetic Resonance in Medical Sciences

Purpose 2D cine phase contrast (PC)-MRI is a standard velocimetry for the superior mesenteric artery (SMA); however, the optimal localization of the measurement plane has never been fully discussed previously. The purpose of this Institutional Review

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2c645c41b7fcdce4df919942ad2c1833
https://pubmed.ncbi.nlm.nih.gov/32009062

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Four-dimensional phase-contrast vastly undersampled isotropic projection reconstruction (4D PC-VIPR) MR evaluation of the renal arteries in transplant recipients: Preliminary results

Autor: Hatsuko Nasu, Harumi Sakahara, Daisuke Motoyama, Tetsuya Wakayama, Seiichiro Ozono, Kevin M. Johnson, Naoki Ohishi, Masataka Sugiyama, Yuko Hirose, Oliver Wieben, Hiroyuki Kabasawa, Yasuo Ishii, Wang Yang, Takasuke Ushio, Yasuo Takehara

Publikováno v: Journal of Magnetic Resonance Imaging. 46:595-603

PURPOSE To assess the performance of four-dimensional phase-contrast vastly undersampled isotropic projection reconstruction (4D PC-VIPR) at 3.0T in depicting intrarenal arteries compared with computed tomography angiography (CTA), and its correlatio

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https://doi.org/10.1002/jmri.25607

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Comparison of monoexponential, intravoxel incoherent motion diffusion-weighted imaging and diffusion kurtosis imaging for assessment of hepatic fibrosis

Autor: Jeong Min Lee, Hiroyuki Kabasawa, Jeong Hee Yoon, Dongeun Kim, Joon Koo Han, Kyung Bun Lee

Publikováno v: Acta radiologica (Stockholm, Sweden : 1987). 60(12)

BackgroundHepatic fibrosis is a dynamic, reversible process which can result in liver failure. Diagnosis and monitoring of hepatic fibrosis are clinically important.PurposeTo compare the diagnostic...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::26dbd9674e0a234d117ade52a7412a4a
https://pubmed.ncbi.nlm.nih.gov/30935212

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