摘要: I will proceed from the assumption that readers are familiar with principles of application ultrasound as a diagnostic tool. A mechanical impulse produced by piezoceramic transducer, which is excited an electrical impulse, enters body and reflected inhomogeneities within acoustic field. These reflections received same transmitter transformed back into signal, rectified coded to intensity screen. Moving weakly focused beam, we generate cross-sectional image body. The inhomogeneous structure therefore very important for reciprocation ultrasound. We calculate on basis unique traveling velocity transform time distance [7].