Výsledky vyhledávání - "Yasuhiko Iryo"

Evaluation of Intracranial Vasculatures in Healthy Subjects with Arterial-Spin-Labeling-Based 4D-MR Angiography at 3T

Autor: Shinichiro Nishimura, Toshinori Hirai, Minako Azuma, Eri Hayashida, Yasuhiko Iryo, Yasuyuki Yamashita, Machiko Tateishi, Masanobu Nakamura, Mika Kitajima

Publikováno v: Magnetic Resonance in Medical Sciences

Contrast inherent inflow-enhanced multi-phase angiography combining multiple-phase flow-alternating inversion-recovery (CINEMA-FAIR) is an arterial-spin-labeling-based four-dimensional magnetic resonance angiography (4D-MRA) technique. Two neuroradio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b55c90e034cb6ccd454a282d88b2e25b
http://europepmc.org/articles/PMC5608130

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Evaluation of Intracranial Dural Arteriovenous Fistulas: Comparison of Unenhanced 3T 3D Time-of-flight MR Angiography with Digital Subtraction Angiography

Autor: Yoshinori Shigematsu, Yasuhiko Iryo, Shigetoshi Yano, Minako Azuma, Yutaka Kai, Toshinori Hirai, Mika Kitajima, Keishi Makino, Yasuyuki Yamashita, Hideo Nakamura

Publikováno v: Magnetic Resonance in Medical Sciences. 14:285-293

Purpose We compared gross characterization of intracranial dural arteriovenous fistulas (DAVFs) between unenhanced 3-tesla 3-dimensional (3D) time-of-flight (TOF) magnetic resonance angiography (MRA) and digital subtraction angiography (DSA). Methods

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f737e48ff3c20f23041833baa7b6e82
https://doi.org/10.2463/mrms.2014-0120

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Evaluation of contrast-enhanced MR angiography in the follow-up of visceral arterial aneurysms after coil embolization

Autor: Toshinori Hirai, Yasuyuki Yamashita, Yasuhiko Iryo, Ichiro Ikushima, Kazuchika Yonenaga

Publikováno v: Acta Radiologica. 54:493-497

Background The placement of detachable coil has become the alternative method of treating visceral arterial aneurysms (VAAs). Imaging follow-up is necessary after coil embolization because of frequent incomplete occlusion. Purpose To compare contrast

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cbfc7261c1229b724a5e2bee7958806b
https://doi.org/10.1177/0284185113475920

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Additive value of 320-section low-dose dynamic volume CT in relation to 3-T MRI for the preoperative evaluation of brain tumors

Autor: Minako Azuma, Mika Kitajima, Toshinori Hirai, Daisuke Utsunomiya, Takeshi Nakaura, Yasuyuki Yamashita, Seitaro Oda, Eri Hayashida, Yasuhiko Iryo, Masafumi Kidoh, Hideo Nakamura

Publikováno v: Japanese journal of radiology. 34(10)

To assess whether 320-section low-dose dynamic volume computed tomography (320-LDVCT) with adaptive iterative dose reduction (AIDR) adds value to 3-T MRI for the preoperative evaluation of brain tumors. The study population was comprised of 16 consec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::51f2e48f10606d823a44b02cabadd293
https://pubmed.ncbi.nlm.nih.gov/27566608

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Ultraselective transcatheter infusion of epirubicin in water-in-oil-in-water emulsion for small hepatocellular carcinoma

Autor: Y. Yamashita, Ichiro Ikushima, Akihiko Ishii, Koji Seguchi, Yasuhiko Iryo, Syushi Higashi

Publikováno v: The British Journal of Radiology. 85:e584-e589

We have previously reported the clinical efficacy of water-in-oil-in-water (W/O/W) emulsions, particularly for non-selective transcatheter arterial infusion (TAI) therapy. W/O/W emulsions limit damage to normal hepatic parenchyma, because of their mi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e319a915201a4c46bfff02ca116cd049
https://doi.org/10.1259/bjr/16376960

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Evaluation of Intracranial Arteriovenous Malformations With Four-Dimensional Arterial-Spin Labeling-Based 3-T Magnetic Resonance Angiography

Autor: Yoshinori Shigematsu, Toshinori Hirai, Yutaka Kai, Shinichiro Nishimura, Mika Kitajima, Yuki Ohmori, Yasuhiko Iryo, Minako Azuma, Masanobu Nakamura, Yasuyuki Kaku, Yasuyuki Yamashita, Takayuki Kawano

Publikováno v: Journal of computer assisted tomography. 40(2)

Objective We aimed to assess the usefulness of 3-T 4-dimensional (4D) arterial spin-labeling (ASL)-based magnetic resonance angiography (MRA) with color-coded time-of-arrival (TOA) maps for the evaluation of cerebral arteriovenous malformations (AVMs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8bae4fd839008ba9277838d00c97d99
https://pubmed.ncbi.nlm.nih.gov/26599964

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Visualization of the Medial and Lateral Geniculate Nucleus on Phase Difference Enhanced Imaging

Autor: Tetsuya Yoneda, Machiko Tateishi, Yasuhiko Iryo, Minako Azuma, Kosuke Morita, Yasuyuki Yamashita, Toshinori Hirai, Masanori Komi, Mika Kitajima

Publikováno v: AJNR Am J Neuroradiol

BACKGROUND AND PURPOSE: The precise identification and measurement of the medial geniculate nucleus and lateral geniculate nucleus on MR imaging remain technically challenging because the thalamic nuclei are small structures. We compared the visualiz

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52f0aaa4b3c1bd5c8a5ed6c0545b135b
https://europepmc.org/articles/PMC7968773/

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Lateral Asymmetry and Spatial Difference of Iron Deposition in the Substantia Nigra of Patients with Parkinson Disease Measured with Quantitative Susceptibility Mapping

Autor: Yasuhiko Iryo, Yi Wang, Satoshi Yamashita, Y. Yamashita, M. Kitajima, Kazumichi Yamada, Yukio Ando, Tetsuya Yoneda, Minako Azuma, Machiko Tateishi, Toshinori Hirai

Publikováno v: AJNR. American journal of neuroradiology. 37(5)

Quantitative susceptibility mapping is useful for assessing iron deposition in the substantia nigra of patients with Parkinson disease. We aimed to determine whether quantitative susceptibility mapping is useful for assessing the lateral asymmetry an

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e4c2d199cd8087fbd28b753cce39b0f5
https://pubmed.ncbi.nlm.nih.gov/26822728

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Can CT angiography reconstructed from CT perfusion source data on a 320-section volume CT scanner replace conventional CT angiography for the evaluation of intracranial arteries?

Autor: Daisuke Utsunomiya, Takeshi Nakaura, Toshinori Hirai, Shigetoshi Yano, Seitaro Oda, Takayuki Kawano, Eri Hayashida, Minako Azuma, Yasuyuki Yamashita, Yasuhiko Iryo, Keishi Makino, Hideo Nakamura, Masafumi Kidoh

Publikováno v: Japanese journal of radiology. 33(6)

To compare conventional CT angiography (CTA) and CTA reconstructed from CT perfusion source data (perfusion CTA) acquired on a 320-section CT scanner for the evaluation of intracranial arteries. Our study included 7 patients who had undergone trappin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d50e159f48859b19cdd0e059edbbaa7e
https://pubmed.ncbi.nlm.nih.gov/25952405

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Collateral circulation via the circle of Willis in patients with carotid artery steno-occlusive disease: evaluation on 3-T 4D MRA using arterial spin labelling

Autor: Shinichiro Nishimura, Minako Azuma, Yasuyuki Yamashita, Masanobu Nakamura, Yoshinori Shigematsu, Toshinori Hirai, Yasuteru Inoue, Masaki Watanabe, Mika Kitajima, Yukio Ando, Yasuhiko Iryo

Publikováno v: Clinical radiology. 70(9)

Aim To evaluate whether 3-T four-dimensional (4D) arterial spin-labelling (ASL) -based magnetic resonance angiography (MRA) is useful for assessing the collateral circulation via the circle of Willis in patients with carotid artery steno-occlusive di

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb6297532a0e2d7ce7124c84fedae590
https://pubmed.ncbi.nlm.nih.gov/26059270

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