Assessment of Ventricular Tachycardia Scar Substrate by Intracardiac Echocardiography

Takahashi Keiko; Watanabe Ichiro; Okumura Yasuo; Nagashima Koichi; Iso Kazuki; Arai Masaru; Watanabe Ryuta; Kurokawa Sayaka; Ohkubo Kimie; Nakai Toshiko; Hirayama Atsushi; Nikaido Mizuki; Sonoda Kazumasa; Tosaka Toshimasa

doi:10.4264/numa.77.6_379

Original Article:

Assessment of Ventricular Tachycardia Scar Substrate by Intracardiac Echocardiography

Keiko Takahashi, Ichiro Watanabe, Yasuo Okumura, Koichi Nagashima, Kazuki Iso, Masaru Arai, Ryuta Watanabe, Sayaka Kurokawa, Kimie Ohkubo, Toshiko Nakai, Atsushi Hirayama, Mizuki Nikaido, Kazumasa Sonoda, Toshimasa Tosaka

Author information

Keiko Takahashi
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Ichiro Watanabe
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Yasuo Okumura
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Koichi Nagashima
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Kazuki Iso
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Masaru Arai
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Ryuta Watanabe
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Sayaka Kurokawa
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Kimie Ohkubo
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Toshiko Nakai
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Atsushi Hirayama
Division of Cardiology, Department of Medicine, Nihon University School of Medicine, Tokyo, Japan
Mizuki Nikaido
Nihon Kohden Corporation, Tokyo, Japan
Kazumasa Sonoda
Division of Cardiology, Department of Medicine, Tokyo Rinkai Hospital, Tokyo, Japan
Toshimasa Tosaka
Division of Cardiology, Department of Medicine, Tokyo Rinkai Hospital, Tokyo, Japan

Keywords: left ventricular scar, intracardiac echo, CE-CMR, left ventricular voltage map

JOURNAL FREE ACCESS

2018 Volume 77 Issue 6 Pages 379-382

DOI https://doi.org/10.4264/numa.77.6_379

Details

Abstract

We assessed whether signal intensity units (SIUs) on intracardiac echocardiography (ICE) images can be used to identify scar tissue in the left ventricle (LV) and, thus, guide ablation of substrate-based ventricular tachycardia. Two-dimensional ICE images were obtained from 12 patients undergoing catheter ablation and were used for 3D reconstruction of the LV. Electroanatomic maps were also obtained. Contrast-enhanced cardiac magnetic resonance imaging (CE-CMR) was performed in 8 of these patients. The SIUs for the ICE images, low-voltage zones on the electroanatomic maps, and late gadolinium-enhancement areas on the CE-CMR images corresponded. Thus, ICE may be useful for identifying LV scar substrate.

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