Standke R, Hör G, Maul F D
Eur J Nucl Med. 1983;8(2):77-83. doi: 10.1007/BF00252561.
A fully automated computer program is described for processing equilibrium radionuclide ventriculography data with regard to global and sectorial left ventricular ejection fraction. The precise identification of the left ventricular outline, a prerequisite for reproducible determination of sectorial ejection fraction, was achieved by using morphological and functional criteria in a sequential edge detection technique. The high reproducibility of this method (correlation coefficient r: global ejection fraction r = 0.96, sectorial ejection fraction r = 0.82-0.97) allows the evaluation of a mean normal sectorial ejection fraction profile and its adaptation to the individual left ventricle. Computerized comparison between individual and adjusted normal sectorial ejection fraction permits quantitation of the degree and localization of functional impairment at rest, sectorial comparison between ejection fraction at rest and during peak exercise is used for the detection of ischemic functional impairment. The success rate of end diastolic left ventricular edge detection of 96% and the processing time of 150 s makes this method suitable for routine use.
描述了一种全自动计算机程序，用于处理平衡放射性核素心室造影数据，以获取整体和局部左心室射血分数。通过在顺序边缘检测技术中使用形态学和功能标准，实现了左心室轮廓的精确识别，这是可重复测定局部射血分数的前提条件。该方法具有很高的重现性（相关系数r：整体射血分数r = 0.96，局部射血分数r = 0.82 - 0.97），能够评估平均正常局部射血分数曲线及其与个体左心室的适配情况。个体与调整后的正常局部射血分数之间的计算机化比较可对静息时功能损害的程度和定位进行定量，静息时与运动峰值时的射血分数进行局部比较可用于检测缺血性功能损害。舒张末期左心室边缘检测的成功率为96%，处理时间为150秒，使得该方法适用于常规使用。
