Titlebook: Acoustical Imaging; Lawrence W. Kessler Book 1988 Springer Science+Business Media New York 1988 Phase.beam.diffraction.elasticity.entropy.

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洞穴

Aufgaben aus der Flugzeugstatikctors.. Other approaches have been based on linear and phased arrays.. Shoup, et. al.., proposed the use of sparsely-sampled two-dimensional arrays a number of years ago, and the research group at the University of Michigan. currently builds and uses actual sparsely-sampled two-dimensional arrays fo

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Rotator-Cuff

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Aufgaben aus der Technischen Mechanikaraxial approximation is replaced by a scale factor, the result can also be expressed as a forward difference and evaluated in a single-addition time. Assuming a 1500 m/s background velocity, the maximum errors over a 3 x 3 cm region on the transducer axis fell below 1/3 the wavelength of a 3.5 MHz

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Mechanics

Aufgaben aus der Technischen Mechanik regions are often not perceptible. The contrast of the image can be stretched using any of a number of contrast-enhancement methods such as histogram modification. Finally, the ultrasonic beam, having a depth-variant width, causes the image to be somewhat blurred. The image may be high-pass filtere