Editorial to utility of directional high‐density mapping catheter (Advisor HD Grid) in complex scar‐related atrial tachycardia by Koji Kumagai

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Idiopathic ventricular arrhythmias arising from the left ventricular outflow tract: Tips and tricks by Koji Kumagai, MD, PhD

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Non-Linear Wear Propagation Property and Prediction Method Having Influencing Pitting Failure of Helical Gears by Koji Kumagai, Hanlin Liu, Syuhei Kurokawa

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Pitting failure of helical gears induced by trochoidal interference and multidirectional, interacting wear by Koji KUMAGAI, Yuta NAITO, Syuhei KUROKAWA

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Mesh efficiency analysis of conical involute gears by Kunihiko MORIKAWA, Mikio NAGAHARA, Koji KUMAGAI, Masaharu KOMORI, Susumu MATSUMOTO

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Three-dimensional electroanatomical mapping for non-pulmonary vein foci in a patient with complete situs inversus and dextrocardia by Kentaro Minami, Koji Kumagai, Yoshinao Sugai, Kohki Nakamura, Shigeto Naito, Shigeru Oshima

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Efficacy of atrial substrate modification based on dominant frequency of paroxysmal atrial fibrillation by Koji Kumagai, PhD, Kentaro Minami, Daisuke Kutsuzawa, PhD, Shigeru Oshima, PhD

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Balloon Pulmonary Angioplasty for Takayasu Arteritis and Peripheral Pulmonary Artery Stenosis Mimicking Chronic Thromboembolic Pulmonary Hypertension by Shigefumi Fukui, Yuko Shirota, Takao Nakano, Tsukasa Sato, Kaoru Hasegawa, Hisashi Kikuta, Takeyoshi Kameyama, Koji Kumagai, Tatsuya Komaru

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Rapidly formed right ventricular thrombus detected by intracardiac echocardiography before catheter ablation in a case of arrhythmogenic right ventricular cardiomyopathy by Masahiro Nakano, MD, Yoshiaki Yamaguchi, MD, PhD, Daisuke Kutsuzawa, MD, PhD, Koji Kumagai, MD, PhD

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Provocation and Localization of Arrhythmogenic Triggers from Persistent Left Superior Vena Cava in Patients with Atrial Fibrillation by Kentaro Minami, Kohki Nakamura, Eiko Maeno, Keitaro Iida, Ikuta Saito, Taiki Masuyama, Yoshiyuki Kitagawa, Toshiaki Nakajima, Yosuke Nakatani, Shigeto Naito, Shigeru Toyoda, Milan Chovanec, Jan Petrů, Jan Škoda, Koji Kumagai, Petr Neužil

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Utility and Validation of Corrected Left Ventricular Filling Time for Determining the Optimal AV Delay in Patients Receiving Cardiac Resynchronization Therapy by Rumi Higuchi, RMS, Hiroshi Tada, MD, Hiroki Okaniwa, RMS, Tsutomu Nakajima, CE, Naoki Takemura, MD, Etsuko Fuke, MD, Chizuru Sato, MD, Tatsuya Hayashi, MD, Yuko Miki, MD, Tamotsu Sakamoto, MD, Rie Fukasawa, MD, Koji Kumagai, MD, Shigeto Naito, MD, Shigeru Oshima, MD

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Registry for Evaluating Healthy Life Expectancy and Long-Term Outcomes after Catheter Ablation of Atrial Fibrillation in the Very Elderly (REHEALTH AF) study: rationale and design... by Kengo Kusano, Ayako Okada, Koji Miyamoto, Eizo Tachibana, Wataru Shimizu, Masato Murakami, Tomoo Harada, Kojiro Tanimoto, Takeshi Kato, Satoru Sakagami, Katsuhito Fujiu, Tatsuya Hayashi, Yasuo Okumura, Kazuhiro Satomi, Tomoyuki Shiozawa, Hideki Kobayashi, Michifumi Tokuda, Teiichi Yamane, Ryohsuke Narui, Seigo Yamashita, Satoru Miyanaga, Ikutaro Nakajima, Hidehira Fukaya, Hajime Kihara, Shiro Nakahara, Koichi Nagashima, Kenta Murotani, Shinya Suzuki, Ryuta Watanabe, Katsuaki Yokoyama, Hidemori Hayashi, Yu-ki Iwasaki, Yuhi Fujimoto, Yasushi Mukai, Koichiro Ejima, Takayuki Otsuka, Masaomi Kimura, Masahide Harada, Junjiroh Koyama, Hideharu Okamatsu, Mitsuru Takami, Morio Shoda, Kenichi Hiroshima, Tadashi Fujino, Keijiro Nakamura, Koji Kumagai, Yuji Watari, Mina Hatsuno, Kazuki Iso, Kazumasa Sonoda, Yoshiyasu Aizawa, Akio Chikata, Masaru Inoue, Hitoshi Minamiguchi, Nobuhiko Makino, Yoshinao Yazaki, Hideshi Aoyagi, Makoto Ichikawa, Hironori Haruta, Takafumi Hiro, Kimie Okubo, Ken Arima, Taiki Tojo, Yoshiaki Fukuda, Koji Oiwa, Tamami Fujiishi, Masashi Akabane, Norikazu Ishikawa, Haruna Tabuchi, Kenjiro Miyamoto, Hiroshi Mase

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