Titlebook: Evaluation of Cardiac Function by Echocardiography; Walter Bleifeld,Sven Effert,Detlef G. Mathey Conference proceedings 1980 Springer-Verl

synovium

History of Echocardiography,roduction of echocardiography by Edler and Hertz [9] from the University of Lund in Sweden, to speak of the “History of Echocardiography”. Even with a conservative assessment at least 10% of all publications in cardiology today are concerned with echocardiography.

不能和解

Principles of Ultrasound,ort electromagnetic pulses. A Sonar depth measurement system uses sound. With knowledge of the propagation velocity the distance between transmitter and reflector can be calculated. This is the principle on which diagnostic ultrasound systems are based.

网络添麻烦

Measurements of Cardiac Dimensions with Ultrasonic Crystals: New Aspects of Left Ventricular Diasto method based on the determination of the interval required for a constant-velocity, ultrasonic pulse to travel from a transmitter to a receiver (Fig. 1). The transmitter and receiver were discs of piezoelectric material covered with plastic convex lenses. Due to the fundamental properties of piezoe

Juvenile

cartilage

GEAR

沉思的鱼

vascular

人造

Immobilize