Hertz, CM (English spelling) HertzCM

Japanese: Hertz,C.M.(英語表記)HertzCM
Hertz, CM (English spelling) HertzCM

…Ultrasound is a method of recording the movement of various parts of the heart or large blood vessels using ultrasound. It is also called UCG (short for ultrasound cardiography). Since it was first reported by Sweden's C.M. Hertz (1920- ) and others in 1954, echocardiography has developed significantly and is now an indispensable method for diagnosing cardiovascular diseases. Ultrasound is sound with a frequency of 20,000 Hz or higher. The two characteristics of ultrasound, (1) its ability to travel in a straight line and (2) its ability to be reflected at the boundary between two media with different acoustic impedances, can be used to analyze the shape and movement of the heart's valves, walls, membranes, and large blood vessels. …

*Some of the terminology that refers to "Hertz, CM" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…超音波を用いて心臓内各部あるいは大血管の運動を記録する方法で,UCG(ultrasound cardiographyの略)ともいわれる。1954年にスウェーデンのヘルツC.M.Hertz(1920‐ )らによって初めて報告されて以来,心エコー図法の発達は著しく,現在では循環器疾患の診断に欠くことのできない方法となっている。超音波とは周波数2万Hz以上の音であり,超音波のもつ,(1)直進性,(2)音響インピーダンスの異なる二つの媒質の境界面で反射される,という二つの特性を利用して,心臓の弁,壁,膜および大血管の形態と運動を分析することができる。…

※「Hertz,C.M.」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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