Document Detail

Automated three-dimensional analysis of mitral annular dynamics in patients with myocardial infarction using automated mitral annular tracking method.
MedLine Citation:
PMID:  16970717     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: A newly developed automated mitral annular tracking method (AMAT) has recently become available and enables us to perform automated analysis of mitral annular dynamics. PURPOSE: To evaluate mitral annular dynamics using AMAT. METHODS: AMAT was performed using a Toshiba Aplio SSA-770 ultrasound system in 15 normal healthy volunteers (group N), 16 patients with anterior MI (group A), and 12 inferior MI (group B). The distance between an annular point at end-diastole and at end-systole (distance D) was automatically measured using AMAT at the basal portion of the anterior, lateral, posterior, inferior, and inferoseptal wall. The angle between the mitral annular plane at end-diastole and the direction of movement of each mitral annular point from end-diastole to end-systole (angle A) was also automatically measured at all five mitral annular points. The coefficients of variation (CV) of both distance D and of angle A were calculated as indices of asynchrony of mitral annular dynamics. RESULTS: CV of distance D in group A (22 +/- 9% (P < 0.01 vs group N)) and group B (22 +/- 10% (P < 0.01 vs group N)) were both significantly larger than in group N (13 +/- 4%). CV of angle A in group A (15 +/- 10% (P < 0.05 vs group N)) and group B (15 +/- 10% (P < 0.05 vs group N)) were also significantly larger than that in group N (8 +/- 3%). CONCLUSION: Automated analysis using AMAT showed that mitral annular dynamics of patients with MI were less symmetrical than in normal healthy volunteers.
Yasuhiko Takemoto; Takeshi Hozumi; Kenichi Sugioka; Hiroyuki Watanabe; Yoshiki Matsumura; Minoru Yoshiyama; Kazuhide Takeuchi; Junichi Yoshikawa
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Echocardiography (Mount Kisco, N.Y.)     Volume:  23     ISSN:  0742-2822     ISO Abbreviation:  Echocardiography     Publication Date:  2006 Sep 
Date Detail:
Created Date:  2006-09-14     Completed Date:  2007-01-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8511187     Medline TA:  Echocardiography     Country:  United States    
Other Details:
Languages:  eng     Pagination:  658-65     Citation Subset:  IM    
Department of Internal Medicine and Cardiology, Osaka City University School of Medicine, Osaka, Japan.
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MeSH Terms
Analysis of Variance
Case-Control Studies
Echocardiography, Three-Dimensional* / methods
Image Processing, Computer-Assisted*
Middle Aged
Mitral Valve / physiopathology*,  ultrasonography*
Myocardial Contraction
Myocardial Infarction / pathology,  physiopathology*,  ultrasonography
Research Design
Stroke Volume

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