synovium
发表于 2025-3-25 05:40:06
History of Echocardiography,roduction of echocardiography by Edler and Hertz 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
发表于 2025-3-25 07:37:30
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
发表于 2025-3-25 14:47:34
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
发表于 2025-3-25 18:10:31
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cartilage
发表于 2025-3-25 22:23:44
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GEAR
发表于 2025-3-26 02:45:53
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沉思的鱼
发表于 2025-3-26 06:31:34
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vascular
发表于 2025-3-26 12:02:24
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人造
发表于 2025-3-26 16:34:43
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Immobilize
发表于 2025-3-26 19:16:19
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