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Herman N. Unley, MD
Arch Intern Med. 1974;134(1):187. doi:10.1001/archinte.1974.00320190189053.
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Echocardiography is a new noninvasive tool that is becoming increasingly important in the diagnosis of various cardiovascular conditions. This book enables the reader to grasp the fundamentals of echocardiography and obtain an idea of the "state of the art."

The author discusses the history of echocardiography and exposes the reader to a minimal but adequate amount of technical background. The chapters on instrumentation and examination of the patient give a good idea of the problems in developing an optimal instrument as well as difficulties in obtaining technically good tracings. However, the major emphasis of the book is on clinical application, and there are numerous echocardiograms illustrating the material the author wished to bring out. In addition, there are frequent supplementary diagrams that help clarify the material. Much of the data is presented in the form of the newer "M-mode" scan of heart, whereby the ultrasonic beam is moved from the


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