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超声心动图已广泛用作心脏病的无创伤性检查,M 型超声心动图(简称 M 型)只能记录心脏结构的一维图象,因而受到限制。心脏实时切面显象——二维超声心动图(two-dimen-sional echocardiography,简称二维超声)克服了 M 型的限制,更适用于评价心肌收缩异常和估计心室功能,对于冠状动脉疾病的研究是必须的。本文综述二维超声在临床应用方面的新近进展。超声心动圈系统各种二维超声系统各有其优缺点,可分为相控阵系统和机械扇形扫查两大类,每一类都有多种组合装置。以较新的微处理机为基础的
Echocardiography has been widely used as a noninvasive test for heart disease. M-mode echocardiography (M-type) only records one-dimensional images of cardiac structures and is therefore limited. Real-time heart imaging - Two-dimensional echocardiography (two-dimensional echocardiography, referred to as two-dimensional ultrasound) to overcome the M-type limit, more suitable for evaluation of myocardial contractility and assessment of ventricular function, the study of coronary artery disease It’s required. This article reviews the recent advances in the clinical application of two-dimensional ultrasound. Echocardiography system A variety of two-dimensional ultrasound systems have their own advantages and disadvantages, can be divided into phased array system and mechanical sector scan two categories, each has a variety of combinations. Based on newer microprocessors