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3,734 results on '"Okamoto, Hiroshi"'

151. Aetiology of chronic heart failure in patients from a super‐aged society: the KUNIUMI registry chronic cohort

Author

Fujimoto, Wataru, primary, Toh, Ryuji, additional, Takegami, Misa, additional, Imanishi, Junichi, additional, Hamana, Tomoyo, additional, Odajima, Susumu, additional, Takemoto, Makoto, additional, Kuroda, Koji, additional, Hatani, Yutaka, additional, Yamashita, Soichiro, additional, Iwasaki, Masamichi, additional, Inoue, Takumi, additional, Okamoto, Hiroshi, additional, Todoroki, Takafumi, additional, Okuda, Masanori, additional, Hayashi, Takatoshi, additional, Konishi, Akihide, additional, Tanaka, Hidekazu, additional, Shinohara, Masakazu, additional, Nagao, Manabu, additional, Murata, Shunsuke, additional, Ogata, Soshiro, additional, Nishimura, Kunihiro, additional, and Hirata, Ken‐ichi, additional

Published
2022
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152. Clinical Characteristics and Outcomes of Patients Presenting With Acute Myocardial Infarction Without Cardiogenic Shock

Author

Okamoto, Hiroshi, primary, Nishi, Takeshi, additional, Ishii, Masanobu, additional, Tsujita, Kenichi, additional, Koto, Satoshi, additional, Nakai, Michikazu, additional, Sumita, Yoko, additional, Iwanaga, Yoshitaka, additional, Matoba, Satoaki, additional, Kobayashi, Yoshio, additional, Hirata, Ken-ichi, additional, Hikichi, Yutaka, additional, Yokoi, Hiroyoshi, additional, Ikari, Yuji, additional, and Uemura, Shiro, additional

Published
2022
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159. 254. TODAY’S ISSUES IN ROBOT-ASSISTED ESOPHAGECTOMY

Author

Taniyama, Yusuke, primary, Okamoto, Hiroshi, additional, Sato, Chiaki, additional, Ozawa, Yohei, additional, Ishida, Hirotaka, additional, Koseki, Ken, additional, Kato, Nobufumi, additional, Yamauchi, Takuro, additional, and Kamei, Takashi, additional

Published
2022
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160. 435. A DIAGNOSTIC PITFALL; SMALL CELL CARCINOMA-LIKE FEATURES IN BASALOID SQUAMOUS CELL CARCINOMA OF THE ESOPHAGUS

Author

Ishida, Hirotaka, primary, Kasajima, Atsuko, additional, Yamauchi, Takuro, additional, Kato, Nobufumi, additional, Koseki, Ken, additional, Ozawa, Yohei, additional, Okamoto, Hiroshi, additional, Sato, Chiaki, additional, Taniyama, Yusuke, additional, Fujishima, Fumiyoshi, additional, Kamei, Takashi, additional, and Sasano, Hironobu, additional

Published
2022
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161. Hydrogen Bonding Propagated Phase Separation in Quasi-Epitaxial Single Crystals: A Pd–Br Molecular Insulator

Author

Yoshida, Takefumi, primary, Takaishi, Shinya, additional, Guérin, Laurent, additional, Kojima, Tatsuhiro, additional, Ohtsu, Hiroyoshi, additional, Kawano, Masaki, additional, Miyamoto, Tatsuya, additional, Okamoto, Hiroshi, additional, Kato, Kenichi, additional, Takata, Masaki, additional, Hosomi, Yuka, additional, Yoshida, Shoji, additional, Shigekawa, Hidemi, additional, Tanaka, Hisaaki, additional, Kuroda, Shin-ichi, additional, Iguchi, Hiroaki, additional, Breedlove, Brian K., additional, Li, Zhao-Yang, additional, and Yamashita, Masahiro, additional

Published
2022
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164. A Universal Quantum Electron Microscope for Phase Objects: Hardware Designs and Possible Applications

Author

Okamoto, Hiroshi

Subjects
Quantum Physics, FOS: Physical sciences, Quantum Physics (quant-ph)
Abstract

We present simple designs of a quantum electron microscope that is capable of performing any multi-pixel quantum operations, provided that the specimen is a phase object. The designs are intended for quantum-enhanced measurement of beam-sensitive specimens. A possible application of such a microscope is the Grover search for a structure, out of a set of candidate structures., 5 pages, 3 figures

Published
2022

165. Local Detection of Communities by Neural-Network Dynamics

Author

Okamoto, Hiroshi, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Mladenov, Valeri, editor, Koprinkova-Hristova, Petia, editor, Palm, Günther, editor, Villa, Alessandro E. P., editor, Appollini, Bruno, editor, and Kasabov, Nikola, editor

Published
2013
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167. Extracting Tailored Protein Complexes from Protein-Protein Interaction Networks

Author

Okamoto, Hiroshi, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Lones, Michael A., editor, Smith, Stephen L., editor, Teichmann, Sarah, editor, Naef, Felix, editor, Walker, James A., editor, and Trefzer, Martin A., editor

Published
2012
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168. Cardiac Remodeling: Role of Neovascularization in Heart Failure

Author

Okamoto, Hiroshi, Watanabe, Masashi, Kumamoto, Hideki, Chiba, Satoru, Yoneya, Keiji, Onozuka, Hisao, Mikami, Taisei, Kawaguchi, Hideaki, Abe, Kazuhiro, Kitabatake, Akira, Kitabatake, Akira, editor, Sasayama, Shigetake, editor, Francis, Gary S., editor, and Okamoto, Hiroshi, editor

Published
2000
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169. Topic-Dependent Document Ranking: Citation Network Analysis by Analogy to Memory Retrieval in the Brain

Author

Okamoto, Hiroshi, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Honkela, Timo, editor, Duch, Włodzisław, editor, Girolami, Mark, editor, and Kaski, Samuel, editor

Published
2011
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172. Perioperative Administration of Cystine and Theanine Suppresses Inflammation and Facilitates Early Rehabilitation and Recovery after Esophagectomy: A Randomized, Double-Blind, Controlled Clinical Trial

Author

Okamoto, Hiroshi, primary, Taniyama, Yusuke, additional, Sakurai, Tadashi, additional, Kodama, Gaku, additional, Sato, Chiaki, additional, Fukutomi, Toshiaki, additional, Ozawa, Yohei, additional, Ishida, Hirotaka, additional, Koseki, Ken, additional, Yamauchi, Takuro, additional, Nakano, Toru, additional, Unno, Michiaki, additional, and Kamei, Takashi, additional

Published
2022
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183. Properties of ScAlMgO 4 as Substrate for Nitride Semiconductors.

Author

Matsuoka, Takashi, Morioka, Hitoshi, Semboshi, Satoshi, Okada, Yukihiko, Yamamura, Kazuya, Kuboya, Shigeyuki, Okamoto, Hiroshi, and Fukuda, Tsuguo

Subjects
MODULATION-doped field-effect transistors, CRYSTAL optics, NITRIDES, SAPPHIRES, SEMICONDUCTORS, RAMAN scattering, CRYSTAL lattices
Abstract

SCAM has been expected to be a suitable substrate for GaN blue-light-emitting-diodes (LEDs) and high-power high electron mobility transistors (HEMTs) because of its lower lattice mismatch to GaN than that of the widely used sapphire. Considering both potential device applications, the crystal lattice and optical properties of SCAM substrates were investigated on selected high quality samples. As lattice parameters, the thermal expansion coefficient as well as the lattice constant were extrapolated from room temperature to 2000 °C by using a high temperature X-ray diffraction (XRD) system with the heating unit on a sample stage. The thermal conductance, which is also important for growing bulk SCAM crystals and the operation of devices on the SCAM substrate, was measured. Raman scattering measurements were carried out to better understand crystal lattice characteristics. It was clearly confirmed that prepared SCAM crystals were of high quality. Similar to sapphire, SCAM has the high transparency over the wide wavelength range from ultraviolet to mid-infrared. The refractive index, important for the design of any optical devices, was measured. From these results, it can be said that SCAM is a suitable substrate for nitride devices, especially LEDs and solar cells. [ABSTRACT FROM AUTHOR]

Published
2023
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184. Primary tracheobronchial necrosis after esophagectomy: A nationwide multicenter retrospective study in Japan.

Author

Sakai, Makoto, Saeki, Hiroshi, Sohda, Makoto, Korematsu, Mizuki, Miyata, Hiroshi, Murakami, Daizo, Baba, Yoshifumi, Ishii, Ryo, Okamoto, Hiroshi, Shibata, Tomotaka, Shirabe, Ken, Toh, Yasushi, and Shiotani, Akihiro

Abstract

Background: The clinical features of postoperative primary tracheobronchial necrosis (P‐TBN; the necrosis without anastomotic leakage or other cervical and mediastinal abscess) remains unclear. This nationwide multicenter retrospective study first investigated the clinical features of P‐TBN after esophagectomy for upper aerodigestive tract cancer with a large cohort. Methods: As a study of the Japan Broncho‐Esophagological Society, a nationwide questionnaire survey was conducted in 67 institutions. The clinical data of 6370 patients who underwent esophagectomy for laryngeal, pharyngeal, and esophageal cancer between 2010 and 2019 were collected. Grades of P‐TBN were defined as follows: Grade 1, mucosal necrosis; Grade 2, transmural bronchial wall necrosis without fistula or perforation; Grade 3, transmural bronchial wall necrosis with fistula or perforation. Results: P‐TBN was observed in 48 (0.75%) of 6370 patients. The incidences of P‐TBN for pharyngo‐laryngo‐cervical esophagectomy (PLCE; n = 1650), total pharyngo‐laryngo‐esophagectomy (TPLE; n = 205), and subtotal esophagectomy (SE; n = 4515) were 2.0%, 5.4%, and 0.1%, respectively. The upper mediastinal LN dissection (P = 0.016) and the higher level of the tracheal resection (P = 0.039) were significantly associated with a higher grade of necrosis in PLCE and TPLE. Overall survival rates were significantly lower in patients with Grade 2 (P = 0.009) and Grade 3 (P = 0.004) than in those with Grade 1. Conclusion: The incidence of TBN restricted to P‐TBN was lower than previously reported. Maintaining the tracheal blood flow is essential to prevent worsening P‐TBN, especially in PLCE and TPLE. Our new P‐TBN severity grade may predict the outcome of patients with P‐TBN. [ABSTRACT FROM AUTHOR]

Published
2023
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185. Aetiology of chronic heart failure in patients from a super‐aged society: the KUNIUMI registry chronic cohort.

Author

Fujimoto, Wataru, Toh, Ryuji, Takegami, Misa, Imanishi, Junichi, Hamana, Tomoyo, Odajima, Susumu, Takemoto, Makoto, Kuroda, Koji, Hatani, Yutaka, Yamashita, Soichiro, Iwasaki, Masamichi, Inoue, Takumi, Okamoto, Hiroshi, Todoroki, Takafumi, Okuda, Masanori, Hayashi, Takatoshi, Konishi, Akihide, Tanaka, Hidekazu, Shinohara, Masakazu, and Nagao, Manabu

Subjects
HEART failure, HEART failure patients, HEART valve diseases, ETIOLOGY of diseases, AORTIC stenosis, MITRAL valve insufficiency
Abstract

Aims: With the rapidly increasing ageing population, heart failure is an urgent challenge, particularly in developed countries. The study aimed to investigate the main aetiologies of chronic heart failure in a super‐aged society. Methods and results: The KUNIUMI registry chronic cohort is a community‐based, prospective, observational study of chronic heart failure in Awaji Island, Japan. Inhabitants of this island aged ≥65 years accounted for 36.3% of the population. In the present study, data from patients with symptomatic heart failure were extracted from the registry. A total of 1646 patients were enrolled from March 2019 to March 2021, accounting for ~1.3% of the inhabitants of Awaji Island. We analysed 852 patients with symptomatic heart failure. The mean age was high (78.7 ± 11.1 years), with 357 patients (41.9%) being female. The proportion of women increased significantly with advancing age and constituted more than half of the patients aged 85 years and older (P < 0.01). The prevalence of atrial fibrillation, and in particular long‐standing persistent atrial fibrillation, increased at 70 years of age (P < 0.01). The proportion of patients with heart failure with preserved ejection fraction increased to ~60% when age was over 75 years. Although ischaemic heart disease accounted for 35.0% of chronic heart failure aetiologies, valvular heart disease was the most common cause of chronic heart failure (49.8%). The major types of valvular heart disease were mitral regurgitation and tricuspid regurgitation (27.2% and 21.7%, respectively), both of which increased significantly with age (P < 0.01). The incidence of aortic valve stenosis increased markedly over the age of 85 years (P < 0.01). Atrial functional mitral regurgitation increased with age and was the major cause of mitral regurgitation in patients aged >75 years. Patients with atrial functional mitral regurgitation had a higher prevalence of atrial fibrillation (especially long‐standing persistent atrial fibrillation) and a larger left atrial volume index when compared with patients with other types of mitral regurgitation (P < 0.001, respectively). Conclusions: The KUNIUMI registry chronic cohort showed a change in heart failure aetiology to valvular heart disease in a super‐aged society. Effective and comprehensive countermeasures are required to prepare for the rapid rise in heart failure incidence in a super‐aged society. [ABSTRACT FROM AUTHOR]

Published
2023
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192. Information Retrieval Based on a Neural-Network System with Multi-stable Neurons

Author

Tsuboshita, Yukihiro, Okamoto, Hiroshi, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Duch, Włodzisław, editor, Kacprzyk, Janusz, editor, Oja, Erkki, editor, and Zadrożny, Sławomir, editor

Published
2005
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195. A Case of Takotsubo syndrome after Surgery for Papillary Thyroid Cancer

Author

YAMAMOTO, Yutaka, KUREBAYASHI, Junichi, OKAMOTO, Hiroshi, MIKAMI, Yuka, MORIYA, Takuya, FUKUMA, Yuna, MIKAMI, Tsuyoshi, KAWANO, Shiori, KISHINO, Emi, OGATA, Ryohei, SAITO, Wataru, KOIKE, Yoshikazu, SOHDA, Mai, NOMURA, Tsunehisa, and TANAKA, Katsuhiro

Subjects
Papillary thyroid cancer, Takotsubo syndrome
Published
2021

196. Tumor Microenvironment in Mixed Neuroendocrine Non-Neuroendocrine Neoplasms: Interaction between Tumors and Immune Cells, and Potential Effects of Neuroendocrine Differentiation on the Tumor Microenvironment

Author

Tsunokake, Junichi, primary, Fujishima, Fumiyoshi, additional, Watanabe, Hirofumi, additional, Sato, Ikuro, additional, Miura, Koh, additional, Sakamoto, Kazuhiro, additional, Suzuki, Hiroyoshi, additional, Sawai, Takashi, additional, Itakura, Yuko, additional, Hoshi, Tatsuya, additional, Kunimitsu, Atsushi, additional, Yamauchi, Takuro, additional, Akaishi, Ryujiro, additional, Ozawa, Yohei, additional, Fukutomi, Toshiaki, additional, Okamoto, Hiroshi, additional, Sato, Chiaki, additional, Taniyama, Yusuke, additional, Kamei, Takashi, additional, and Sasano, Hironobu, additional

Published
2022
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198. Layered Plaque in Organic Lesions in Patients With Coronary Artery Spasm

Author

Nishi, Takeshi, primary, Kume, Teruyoshi, additional, Yamada, Ryotaro, additional, Okamoto, Hiroshi, additional, Koto, Satsohi, additional, Yamashita, Masahiro, additional, Ueno, Masahiko, additional, Kamisaka, Kyo, additional, Sasahira, Yoshitaka, additional, Enzan, Ayano, additional, Sudo, Yasuyuki, additional, Tamada, Tomoko, additional, Koyama, Terumasa, additional, Imai, Koichiro, additional, Neishi, Yoji, additional, and Uemura, Shiro, additional

Published
2022
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199. Outcomes of Venoarterial Extracorporeal Membrane Oxygenation Plus Intra‐Aortic Balloon Pumping for Treatment of Acute Myocardial Infarction Complicated by Cardiogenic Shock

Author

Nishi, Takeshi, primary, Ishii, Masanobu, additional, Tsujita, Kenichi, additional, Okamoto, Hiroshi, additional, Koto, Satoshi, additional, Nakai, Michikazu, additional, Sumita, Yoko, additional, Iwanaga, Yoshitaka, additional, Matoba, Satoaki, additional, Kobayashi, Yoshio, additional, Hirata, Ken‐Ichi, additional, Hikichi, Yutaka, additional, Yokoi, Hiroyoshi, additional, Ikari, Yuji, additional, and Uemura, Shiro, additional

Published
2022
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200. Effects of the Current Japanese Guideline for Dedicated, Intensive Lipid-lowering Therapy on Lipid Profile and Coronary Events in Patients After Acute Coronary Syndrome

Author

Yamada, Ryotaro, primary, Kume, Teruyoshi, additional, Okamoto, Hiroshi, additional, Yamashita, Masahiro, additional, Koto, Satoshi, additional, Kamisaka, Kyo, additional, Sasahira, Yoshitaka, additional, Sudo, Yasuyuki, additional, Enzan, Ayano, additional, Tamada, Tomoko, additional, Koyama, Terumasa, additional, Imai, Koichiro, additional, Nishi, Takeshi, additional, Neishi, Yoji, additional, and Uemura, Shiro, additional

Published
2022
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