Wery R, Hill J, Dworkin H J
J Nucl Med. 1981 Jun;22(6):546-8.
A simple device using a rotating radioactive source was developed to monitor the presence of a delay between the patient's R wave and the gate signal being sent to the computer. Three commercial ECG gates were tested and significant delays were found in two of them. Identical patient data evaluated using ECG gates with and without significant delays produced calculated left-ventricular ejection fractions of 0.05 and 0.64, respectively.
开发了一种使用旋转放射源的简单装置，以监测患者R波与发送到计算机的门控信号之间是否存在延迟。对三个商用心电图门控装置进行了测试，发现其中两个存在明显延迟。使用有明显延迟和无明显延迟的心电图门控装置评估相同的患者数据，计算出的左心室射血分数分别为0.05和0.64。
