Works by Hiroshi Toyama

Results: 105
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    Coronary computed tomography angiographic detection of in-stent restenosis via deep learning reconstruction: a feasibility study.

    Published in:
    European Radiology, 2024, v. 34, n. 4, p. 2647, doi. 10.1007/s00330-023-10110-7
    By:
    • Kawai, Hideki;
    • Motoyama, Sadako;
    • Sarai, Masayoshi;
    • Sato, Yoshihiro;
    • Matsuyama, Takahiro;
    • Matsumoto, Ryota;
    • Takahashi, Hiroshi;
    • Katagata, Akio;
    • Kataoka, Yumi;
    • Ida, Yoshihiro;
    • Muramatsu, Takashi;
    • Ohno, Yoshiharu;
    • Ozaki, Yukio;
    • Toyama, Hiroshi;
    • Narula, Jagat;
    • Izawa, Hideo
    Publication type:
    Article
    3

    Pulmonary MRI with ultra-short TE using single- and dual-echo methods: comparison of capability for quantitative differentiation of non- or minimally invasive adenocarcinomas from other lung cancers with that of standard-dose thin-section CT.

    Published in:
    European Radiology, 2024, v. 34, n. 2, p. 1065, doi. 10.1007/s00330-023-10105-4
    By:
    • Ohno, Yoshiharu;
    • Yui, Masao;
    • Yamamoto, Kaori;
    • Ikedo, Masato;
    • Oshima, Yuka;
    • Hamabuchi, Nayu;
    • Hanamatsu, Satomu;
    • Nagata, Hiroyuki;
    • Ueda, Takahiro;
    • Ikeda, Hirotaka;
    • Takenaka, Daisuke;
    • Yoshikawa, Takeshi;
    • Ozawa, Yoshiyuki;
    • Toyama, Hiroshi
    Publication type:
    Article
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    Comparison of lung CT number and airway dimension evaluation capabilities of ultra-high-resolution CT, using different scan modes and reconstruction methods including deep learning reconstruction, with those of multi-detector CT in a QIBA phantom study.

    Published in:
    European Radiology, 2023, v. 33, n. 1, p. 368, doi. 10.1007/s00330-022-08983-1
    By:
    • Ohno, Yoshiharu;
    • Akino, Naruomi;
    • Fujisawa, Yasuko;
    • Kimata, Hirona;
    • Ito, Yuya;
    • Fujii, Kenji;
    • Kataoka, Yumi;
    • Ida, Yoshihiro;
    • Oshima, Yuka;
    • Hamabuchi, Nayu;
    • Shigemura, Chika;
    • Watanabe, Ayumi;
    • Obama, Yuki;
    • Hanamatsu, Satomu;
    • Ueda, Takahiro;
    • Ikeda, Hirotaka;
    • Murayama, Kazuhiro;
    • Toyama, Hiroshi
    Publication type:
    Article
    5

    Comparison of utility of deep learning reconstruction on 3D MRCPs obtained with three different k-space data acquisitions in patients with IPMN.

    Published in:
    European Radiology, 2022, v. 32, n. 10, p. 6658, doi. 10.1007/s00330-022-08877-2
    By:
    • Matsuyama, Takahiro;
    • Ohno, Yoshiharu;
    • Yamamoto, Kaori;
    • Ikedo, Masato;
    • Yui, Masao;
    • Furuta, Minami;
    • Fujisawa, Reina;
    • Hanamatsu, Satomu;
    • Nagata, Hiroyuki;
    • Ueda, Takahiro;
    • Ikeda, Hirotaka;
    • Takeda, Saki;
    • Iwase, Akiyoshi;
    • Fukuba, Takashi;
    • Akamatsu, Hokuto;
    • Hanaoka, Ryota;
    • Kato, Ryoichi;
    • Murayama, Kazuhiro;
    • Toyama, Hiroshi
    Publication type:
    Article
    6

    Use of the specific binding ratio distribution to characterise multiple system atrophy in advanced iodine-123-labelled N-(3-fluoropropyl)-2ß-carbomethoxy-3ß-(4-iodophenyl) nortropane serotonin transporter imaging.

    Published in:
    Asia Oceania Journal of Nuclear Medicine & Biology, 2025, v. 13, n. 1, p. 33, doi. 10.22038/aojnmb.2024.78274.1557
    By:
    • Kazuya Takahashi;
    • Masanobu Ishiguro;
    • Yoshitaka Inui;
    • Takashi Ichihara;
    • Cong Shang;
    • Ryunosuke Nagao;
    • Yasuaki Mizutani;
    • Mizuki Ito;
    • Hirohisa Watanabe;
    • Nobutoku Motomura;
    • Hiroshi Toyama
    Publication type:
    Article
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    Deep learning-based and hybrid-type iterative reconstructions for CT: comparison of capability for quantitative and qualitative image quality improvements and small vessel evaluation at dynamic CE-abdominal CT with ultra-high and standard resolutions.

    Published in:
    Japanese Journal of Radiology, 2021, v. 39, n. 2, p. 186, doi. 10.1007/s11604-020-01045-w
    By:
    • Matsukiyo, Ryo;
    • Ohno, Yoshiharu;
    • Matsuyama, Takahiro;
    • Nagata, Hiroyuki;
    • Kimata, Hirona;
    • Ito, Yuya;
    • Ogawa, Yukihiro;
    • Murayama, Kazuhiro;
    • Kato, Ryoichi;
    • Toyama, Hiroshi
    Publication type:
    Article
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    核医学内用療法におけるイメージング技術.

    Published in:
    Japanese Journal of Nuclear Medicine / Kaku Igaku, 2014, v. 51, n. 3, p. 56
    By:
    • Ishiguro Masanobu;
    • Katō Masaki;
    • Uno Masaki;
    • Ichihara Takashi;
    • Natsume Takahiro;
    • Ōta Seiichirō;
    • Kikukawa Kaoru;
    • Toyama Hiroshi
    Publication type:
    Article
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    A Trial of <sup>89</sup>Sr Bremsstrahlung SPECT.

    Published in:
    Japanese Journal of Nuclear Medicine / Kaku Igaku, 2011, v. 48, n. 2, p. 101
    By:
    • Ota, Seiichiro;
    • Toyama, Hiroshi;
    • Uno, Masaki;
    • Kato, Masaki;
    • Ishiguro, Masanobu;
    • Natsume, Takahiro;
    • Ito, Fumitaka;
    • Kikukawa, Kaoru;
    • Tadokoro, Masanori;
    • Ichihara, Takashi;
    • Katada, Kazuhiro
    Publication type:
    Article
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    MR neurography for the evaluation of CIDP.

    Published in:
    2017
    By:
    • Ishikawa, Tomomasa;
    • Asakura, Kunihiko;
    • Mizutani, Yasuaki;
    • Ueda, Akihiro;
    • Murate, Ken‐Ichiro;
    • Hikichi, Chika;
    • Shima, Sayuri;
    • Kizawa, Madoka;
    • Komori, Masako;
    • Murayama, Kazuhiro;
    • Toyama, Hiroshi;
    • Ito, Shinji;
    • Mutoh, Tatsuro
    Publication type:
    journal article
    28

    Japanese multicenter database of healthy controls for [<sup>123</sup>I]FP-CIT SPECT.

    Published in:
    European Journal of Nuclear Medicine & Molecular Imaging, 2018, v. 45, n. 8, p. 1405, doi. 10.1007/s00259-018-3976-5
    By:
    • Matsuda, Hiroshi;
    • Murata, Miho;
    • Mukai, Yohei;
    • Sako, Kazuya;
    • Ono, Hidetoshi;
    • Toyama, Hiroshi;
    • Inui, Yoshitaka;
    • Taki, Yasuyuki;
    • Shimomura, Hideo;
    • Nagayama, Hiroshi;
    • Tateno, Amane;
    • Ono, Kenjiro;
    • Murakami, Hidetomo;
    • Kono, Atsushi;
    • Hirano, Shigeki;
    • Kuwabara, Satoshi;
    • Maikusa, Norihide;
    • Ogawa, Masayo;
    • Imabayashi, Etsuko;
    • Sato, Noriko
    Publication type:
    Article
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    PET imaging of brain with the ß-amyloid probe, [<sup>11</sup>C]6-OH-BTA-1, in a transgenic mouse model of Alzheimer’s disease.

    Published in:
    European Journal of Nuclear Medicine & Molecular Imaging, 2005, v. 32, n. 5, p. 593, doi. 10.1007/s00259-005-1780-5
    By:
    • Toyama, Hiroshi;
    • Ye, Daniel;
    • Ichise, Masanori;
    • Jeih-San Liow;
    • Lisheng Cai;
    • Jacobowitz, David;
    • Musachio, John L.;
    • Jinsoo Hong;
    • Crescenzo, Mathew;
    • Tipre, Dnyanesh;
    • Jian-Qiang Lu;
    • Zoghbi, Sami;
    • Vines, Douglass C.;
    • Seidel, Jurgen;
    • Katada, Kazuhiro;
    • Green, Michael V.;
    • Pike, Victor W.;
    • Cohen, Robert M.;
    • Innis, Robert B.
    Publication type:
    Article
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    The washout rate of (123)I-BMIPP and the evolution of left ventricular function in patients with successfully reperfused ST-segment elevation myocardial infarction: comparisons with the echocardiography.

    Published in:
    2010
    By:
    • Biswas SK;
    • Sarai M;
    • Yamada A;
    • Toyama H;
    • Motoyama S;
    • Harigaya H;
    • Hara T;
    • Naruse H;
    • Hishida H;
    • Ozaki Y;
    • Biswas, Shankar K;
    • Sarai, Masayoshi;
    • Yamada, Akira;
    • Toyama, Hiroshi;
    • Motoyama, Sadako;
    • Harigaya, Hiroto;
    • Hara, Tomonori;
    • Naruse, Hiroyuki;
    • Hishida, Hitoshi;
    • Ozaki, Yukio
    Publication type:
    journal article
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    The washout rate of <sup>123</sup>I-BMIPP and the evolution of left ventricular function in patients with successfully reperfused ST-segment elevation myocardial infarction: comparisons with the echocardiography.

    Published in:
    International Journal of Cardiovascular Imaging, 2010, v. 26, p. 155, doi. 10.1007/s10554-009-9575-6
    By:
    • Biswas, Shankar K.;
    • Sarai, Masayoshi;
    • Yamada, Akira;
    • Toyama, Hiroshi;
    • Motoyama, Sadako;
    • Harigaya, Hiroto;
    • Hara, Tomonori;
    • Naruse, Hiroyuki;
    • Hishida, Hitoshi;
    • Ozaki, Yukio
    Publication type:
    Article
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    <sup>123</sup>I-BMIPP and <sup>99m</sup>Tc-TF discordance on myocardial scintigraphy and it’s correlation with functional recovery following acute myocardial infarction: role of conventional echocardiography.

    Published in:
    International Journal of Cardiovascular Imaging, 2009, v. 25, n. 8, p. 765, doi. 10.1007/s10554-009-9497-3
    By:
    • Biswas, Shankar K.;
    • Sarai, Masayoshi;
    • Toyama, Hiroshi;
    • Yamada, Akira;
    • Motoyama, Sadako;
    • Harigaya, Hiroto;
    • Hara, Tomonori;
    • Iwase, Masatsugu;
    • Hishida, Hitoshi;
    • Ozaki, Yukio
    Publication type:
    Article
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    Simple and low-cost tele-nuclear medicine conference system with the e-mail protocol.

    Published in:
    2001
    By:
    • Toyama, Hiroshi;
    • Emoto, Yutaka;
    • Ito, Kiyonobu;
    • Mizuno, Shinji;
    • Ohashi, Ichiro;
    • Nakamura, Mototoshi;
    • Nomura, Masayo;
    • Matsumura, Kaname;
    • Ichise, Masanori;
    • Kako, Nobuo;
    • Tohyama, Junko;
    • Ohno, Kazuko;
    • Watanabe, Yuri;
    • Kudo, Gen;
    • Hattori, Hidekazu;
    • Kikukawa, Kaoru;
    • Fujii, Naoko;
    • Senda, Kouhei;
    • Hoshi, Hiroaki;
    • Koga, Sukehiko
    Publication type:
    research
    40

    Early and delayed Tc-99m ECD brain SPECT in SLE patients with CNS involvement.

    Published in:
    2000
    By:
    • Kikukawa, Kaoru;
    • Toyama, Hiroshi;
    • Katayama, Masao;
    • Nishimura, Tetsuhiro;
    • Ejiri, Kazutaka;
    • Minami, Kazuyuki;
    • Matsumura, Kaname;
    • Miyama, Hitomi;
    • Emoto, Yutaka;
    • Maeda, Hisato;
    • Senda, Kohei;
    • Takeuchi, Akira;
    • Oshima, Hisaji;
    • Yoshida, Shunji;
    • Torikai, Katsutaka;
    • Koga, Sukehiko;
    • Kikukawa, K;
    • Toyama, H;
    • Katayama, M;
    • Nishimura, T
    Publication type:
    journal article
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    Diagnosis of isolated cardiac sarcoidosis based on new guidelines.

    Published in:
    ESC Heart Failure, 2020, v. 7, n. 5, p. 2662, doi. 10.1002/ehf2.12853
    By:
    • Kawai, Hideki;
    • Sarai, Masayoshi;
    • Kato, Yasuchika;
    • Naruse, Hiroyuki;
    • Watanabe, Ayumi;
    • Matsuyama, Takahiro;
    • Takahashi, Hiroshi;
    • Motoyama, Sadako;
    • Ishii, Junnichi;
    • Morimoto, Shin‐ichiro;
    • Toyama, Hiroshi;
    • Ozaki, Yukio
    Publication type:
    Article
    46

    Deep Learning Reconstruction for DWIs by EPI and FASE Sequences for Head and Neck Tumors.

    Published in:
    Cancers, 2024, v. 16, n. 9, p. 1714, doi. 10.3390/cancers16091714
    By:
    • Ikeda, Hirotaka;
    • Ohno, Yoshiharu;
    • Yamamoto, Kaori;
    • Murayama, Kazuhiro;
    • Ikedo, Masato;
    • Yui, Masao;
    • Kumazawa, Yunosuke;
    • Shimamura, Yurika;
    • Takagi, Yui;
    • Nakagaki, Yuhei;
    • Hanamatsu, Satomu;
    • Obama, Yuki;
    • Ueda, Takahiro;
    • Nagata, Hiroyuki;
    • Ozawa, Yoshiyuki;
    • Iwase, Akiyoshi;
    • Toyama, Hiroshi
    Publication type:
    Article
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    Machine learning for lung texture analysis on thin-section CT: Capability for assessments of disease severity and therapeutic effect for connective tissue disease patients in comparison with expert panel evaluations.

    Published in:
    Acta Radiologica, 2022, v. 63, n. 10, p. 1363, doi. 10.1177/02841851211044973
    By:
    • Ohno, Yoshiharu;
    • Aoyagi, Kota;
    • Takenaka, Daisuke;
    • Yoshikawa, Takeshi;
    • Fujisawa, Yasuko;
    • Sugihara, Naoki;
    • Hamabuchi, Nayu;
    • Hanamatsu, Satomu;
    • Obama, Yuki;
    • Ueda, Takahiro;
    • Hattori, Hidekazu;
    • Murayama, Kazuhiro;
    • Toyama, Hiroshi
    Publication type:
    Article