Two-dimensional echocardiography

Two-dimensional echocardiography is also called cross-sectional echocardiography (short for two-dimensional echocardiography), which is referred to as two-dimensional ultrasound for short. The echo signals reflected from the human body are composed of cross-sectional images in the form of light spots, also known as brightness modulation (Brightnessmode). It can clearly, intuitively and in real time display the shape, spatial position and continuous relationship of various structures of the heart. It is the basic inspection method. Echocardiography has been widely used as a non-invasive examination of heart disease. M-mode echocardiography can only record one-dimensional images of the structure of the heart, and is therefore limited. Real-time cardiac imaging—two-dimensional echocardiography overcomes M-type limitations and is more suitable for evaluating abnormal cardiac contractions and estimating ventricular function. When two-dimensional echocardiography is used to examine the heart, three mutually perpendicular planes are basically used, which are named long-axis section, short-axis section, and four-chamber heart section. Basic two-dimensional echocardiographic section 1. Long-axis section of the paraventricular left ventricle; 2. Horizontal short-axis section of the cuspid valve; 3. Four-chamber section of the cusp; 4. Four-chamber section of the subocclusion. Two-dimensional echocardiography is the basis for the development of various types of echocardiography. Contrast-enhanced ultrasound and transesophageal echocardiography must be based on two-dimensional echocardiographic images. It can show the fault structure, adjacency relationship and dynamic changes of the large vessels of the heart from different directions in two dimensions. It is the core examination method of cardiac ultrasound and is suitable for the examination of various types of cardiovascular diseases.