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A new test object has been developed that generates images of transducer beam patterns on B‐mode hardcopy. The extent and depth of the transducer focal zone are measured from these images. The predictions made from test object images were verified in the clinical images obtained from two 3.5‐MHz...
Subplacental tissue frequently appears as a less echogenic zone adjacent to the more echogenic parenchymal texture of the placenta on gray‐scale sonograms. This complex of parenchymal structures is useful in specifically localizing placental position and extent, especially in posteriorly...
Clinical use of A‐ and B‐mode echoencephalography in neurology, neurosurgery, and pediatrics is discussed, and some results are presented. Descriptions are given of several techniques to obtain two‐dimensional echoencephalographic pictures. Two‐dimensional echoencephalography can be particularly...
Echocardiographic recordings from a patient with a prosthetic mitral valve revealed echoes within the left ventricular cavity that mimicked the motion pattern of a „normal”︁ anterior mitral leaflet. The echo pattern was continuous, recorded from multiple views, and by two‐dimensional images it...
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