Comparison of Automatic Boundary Detection and Manual Tracing Technique in Echocardiographic Determination of Left Atrial Volume
スポンサーリンク
概要
- 論文の詳細を見る
Previous reports have indicated that echocardiography with automatic boundary detection (ABD) is useful for the noninvasive estimation of left ventricular volume. However, few data exist regarding the measurement of left atrial (LA) volume, which also provides pivotal information in the clinical setting. Therefore, the feasibility of LA volume measurement by ABD in comparison with the manual tracing using modified Simpson's method (SM) was evaluated. Fifty-nine patients with coronary artery disease with sinus rhythm were examined. Using ABD, a region of interest was set around the LA border and mitral annulus from an apical four-chamber view. The maximal and minimal LA volume (Vmax and Vmin) were measured from the volume waveform. Using the SM, the maximal and minimal LA volume were measured by the manual tracing on frozen frames at the apical four-chamber view. The ABD displayed a curve of LA volume change that consisted of passive emptying, diastasis, and active emptying phases during the left ventricular diastolic period. Under these conditions, the Vmax and Vmin were 43.7±11.2 ml and 21.1±7.6 ml, respectively, yielding the volume change of 22.6±6.0 ml. By the SM, Vmax and Vmin were 43.1±9.9 ml {r=0.94, p<0.0001, y (ABD) = 0.91x (SM) + 3.6} and 22.0±9.0 ml (r=0.91, p<0.0001, y = 0.94x + 0.7), respectively, and the volume change was 22.8±6.1 ml (r=0.82, p<0.0001, y = 0.84x + 3.8). These results indicate that the ABD from the apical four-chamber approach could provide an accurate estimation of LA volume change, suggesting the potential value of this method in assessing LA function, although some technical difficulties need to be further overcome. (Jpn Circ J 1998; 62: 755 - 759)
- 社団法人 日本循環器学会の論文
社団法人 日本循環器学会 | 論文
- Adenosine Triphosphate Exposes Dormant Pulmonary Vein Conduction Responsible for Recurrent Atrial Tachyarrhythmias : Importance of Evaluating the Dormant Conduction During the Re-Do Ablation Procedure
- Impact of Diabetes Mellitus on Rehospitalization for Heart Failure Among Survivors of Acute Myocardial Infarction in the Percutaneous Coronary Intervention Era
- N-Acetylcysteine Reduces the Severity of Atherosclerosis in Apolipoprotein E-Deficient Mice by Reducing Superoxide Production
- Incremental Effects of Eicosapentaenoic Acid on Cardiovascular Events in Statin-Treated Patients With Coronary Artery Disease : Secondary Prevention Analysis From JELIS
- Risk of Smoking and Metabolic Syndrome for Incidence of Cardiovascular Disease : Comparison of Relative Contribution in Urban Japanese Population : The Suita Study