Mitani T, Ueda M, Yamada N, Saito D, Haraoka S, Nagashima H, Tanetani S, Sakakibara H
J Cardiogr. 1982 Sep;12(3):709-15.
Phase analysis using RI multigated method was performed in 32 patients with various conditions including right and left bundle branch blocks (RBBB and LBBB), myocardial infarction, WPW syndrome, QT prolongation syndrome, atrioventricular (A-V) dissociation, valvular heart disease, and others. Pixel numbers were plotted into the histogram regarding the one cardiac cycle as 360 degrees. Standard deviation (S.D.) of a phase was calculated from the histogram in order to quantify asynchrony of the ventricles. Results were as follows: 1. Phase analysis was useful as a parameter of asynchrony. 2. There was a close negative correlation between left ventricular ejection fraction (LVEF) and S.D. of a phase. (r = -0.86, n = 32, p less than 0.001) 3. A marked time lag was observed in the infarcted area, and its value was mild in RBBB and LBBB. 4. A time lag between right and left ventricles was diminished or slightly reversed in the cases of RBBB with left anterior hemiblock compared to the cases of lone RBBB. 5. No significant changes were observed in other heart diseases with phase analysis.
采用RI多门控方法对32例患有各种病症的患者进行了相位分析，这些病症包括右束支传导阻滞和左束支传导阻滞（RBBB和LBBB）、心肌梗死、WPW综合征、QT延长综合征、房室（A-V）分离、瓣膜性心脏病等。将一个心动周期视为360度，把像素数绘制到直方图中。为了量化心室的不同步性，从直方图中计算相位的标准差（S.D.）。结果如下：1. 相位分析作为不同步性的参数是有用的。2. 左心室射血分数（LVEF）与相位的S.D.之间存在密切的负相关。（r = -0.86，n = 32，p < 0.001）3. 在梗死区域观察到明显的时间延迟，其值在RBBB和LBBB中较轻。4. 与单纯RBBB病例相比，左前半阻滞合并RBBB病例的左右心室之间的时间延迟减小或略有逆转。5. 相位分析在其他心脏病中未观察到显著变化。
