Validation of Longitudinal Peak Systolic Strain by Speckle Tracking Echocardiography With Visual Assessment and Myocardial Perfusion SPECT in Patients With Regional Asynergy

Kenya Kusunose; Hirotsugu Yamada; Susumu Nishio; Yukio Mizuguchi; Masahito Choraku; Yasuhiro Maeda; Shinobu Hosokawa; Nobuo Yamazaki; Noriko Tomita; Toshiyuki Niki; Koji Yamaguchi; Kunihiko Koshiba; Takeshi Soeki; Tetsuzo Wakatsuki; Masashi Akaike; Masataka Sata

doi:10.1253/circj.CJ-10-0551

Imaging

Validation of Longitudinal Peak Systolic Strain by Speckle Tracking Echocardiography With Visual Assessment and Myocardial Perfusion SPECT in Patients With Regional Asynergy

Kenya Kusunose, Hirotsugu Yamada, Susumu Nishio, Yukio Mizuguchi, Masahito Choraku, Yasuhiro Maeda, Shinobu Hosokawa, Nobuo Yamazaki, Noriko Tomita, Toshiyuki Niki, Koji Yamaguchi, Kunihiko Koshiba, Takeshi Soeki, Tetsuzo Wakatsuki, Masashi Akaike, Masataka Sata

Author information

Kenya Kusunose
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School
Hirotsugu Yamada
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School
Susumu Nishio
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School
Yukio Mizuguchi
Cardiovascular Section, Higashi Tokushima National Hospital, National Hospital Organization
Masahito Choraku
Health Insurance Naruto Hospital
Yasuhiro Maeda
Health Insurance Naruto Hospital
Shinobu Hosokawa
Division of Cardiology, Tokushima Red Cross Hospital
Nobuo Yamazaki
Cardiovascular Ultrasound Japan, GE Yokogawa Medical Systems Ltd
Noriko Tomita
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School
Toshiyuki Niki
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School
Koji Yamaguchi
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School
Kunihiko Koshiba
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School
Takeshi Soeki
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School
Tetsuzo Wakatsuki
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School
Masashi Akaike
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School
Masataka Sata
Department of Cardiovascular Medicine, Institute of Health Biosciences, The University of Tokushima Graduate School

Keywords: Myocardial infarction, Regional asynergy, Single-photon emission computed tomography (SPECT), Speckle tracking, Strain

JOURNAL FREE ACCESS

2011 Volume 75 Issue 1 Pages 141-147

DOI https://doi.org/10.1253/circj.CJ-10-0551

View "Advance Publication" version (November 16, 2010).

Details

Abstract

Background: Automated function imaging (AFI) is a recently developed method of calculating the longitudinal peak systolic strains (LS) of the regional left ventricular (LV) wall using speckle tracking echocardiography and displaying them on a single bull's-eye map. The feasibility of AFI in patients with regional LV wall motion abnormalities caused by myocardial infarction (MI) was evaluated by comparison with visual assessment and myocardial perfusion single-photon emission computed tomography (SPECT). Methods and Results: Segmental LS was measured by AFI in 60 patients with MI (67±11 years) and 58 controls (71±9 years). Wall thickening (WT) was measured by SPECT in 20 patients with MI. There was a strong positive linear relationship between the wall motion score index by expert visual assessment and global LS. The receiver-operating characteristic analysis revealed the best cutoff value of 11% <LS to identify hypokinetic segments. The overall accuracy of wall motion scoring by LS in the 2,006 segments was 96.8% (κ=0.90) compared with visual assessment. The correlation coefficient between LS and WT was R²=0.65 in the 340 segments. Conclusions: Assessment of LV regional asynergy by AFI showed good agreement with visual and SPECT assessments. AFI is clinically useful for quantitative assessment of LV regional wall motion abnormalities. (Circ J 2011; 75: 141-147)

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