超声心动图可定量测定心腔的大小和观察各瓣膜的活动情况,鉴别在X光下所见到的组织结构,特别与心音图同时记录可较精确地反映心音产生的机理。各项无创伤性检查技术必须和临床资料,尤其是心脏听诊紧密结合,才具有正确诊断的价值。超声心音图的技术超声心动图检查需要临床和熟练的技术相结合,在观察中应改变手法与方向,以达到所要求的清晰的图形。在儿童由于胸壁狭小, 可使超声与心音两者探头的位置发生矛盾。满意的技术是超声心动图记录的必要条件。近来,我们应用改良的Irex记录仪,可同时使用二个超声探头,这样能同时看到心腔中 Echocardiography can quantify the size of the heart chamber and observe the activities of the valve to identify the organization seen in X-ray structure, especially with the phonocardiogram recorded at the same time can be more accurately reflect the mechanism of heart sound production. The non-invasive examination techniques and clinical data must be closely integrated, especially cardiac auscultation, it has the correct value of diagnosis. Techniques for Echocardiography Echocardiography requires a combination of clinical and proficient techniques in which observations and directions should be changed in order to achieve the desired sharp picture. Due to the narrow chest wall in children, ultrasound and heart sounds can both probe the location of the contradiction. Satisfactory technique is a prerequisite for echocardiographic recording. Recently, with the improved Irex Recorder, we can use two ultrasound probes at the same time, so we can see the heart chamber