Orita Y, Makino N, Ootsubo H, Takeshita A, Nakamura M, Nakamura K, Kushitani M
Jpn Heart J. 1985 May;26(3):371-8. doi: 10.1536/ihj.26.371.
We developed a "dual-frame image-freezing unit", which enables acquisition of two stop-frame images of the two-dimensional echocardiogram at different points within one cardiac cycle. We assessed the clinical usefulness of this unit by estimating the left ventricular ejection fraction with apical biplane two-dimensional echocardiography in 25 patients who underwent left ventricular biplane cineangiography. The unit functioned successfully in all instances. It was much easier to obtain the left ventricular end-diastolic and end-systolic echocardiographic images than to obtain such images using conventional videotape play-back. The quality of the images obtained by this unit was better than those obtained from videotape play-back. The echocardiographic estimates of the left ventricular ejection fraction showed an excellent correlation with estimates obtained by contrast left ventricular cineangiography. We conclude that this dual-frame image-freezing unit can be satisfactorily applied for the assessment of the left ventricular ejection fraction by two-dimensional echocardiography.
我们开发了一种“双帧图像冻结装置”，它能够在一个心动周期内的不同时间点采集二维超声心动图的两幅定格图像。我们通过对25例接受左心室双平面电影血管造影术的患者进行心尖双平面二维超声心动图检查来评估左心室射血分数，从而评估该装置的临床实用性。该装置在所有情况下均成功运行。与使用传统录像带回放获取图像相比，使用该装置获取左心室舒张末期和收缩末期超声心动图图像要容易得多。该装置获取的图像质量优于录像带回放获取的图像。超声心动图对左心室射血分数的估计与左心室造影对比法获得的估计值具有极好的相关性。我们得出结论，这种双帧图像冻结装置可令人满意地应用于通过二维超声心动图评估左心室射血分数。
