Lens system for acoustical imaging

Details Lens system for acoustical imaging Lens system for acoustical imaging

A - Human Necessities

61

B

349/36

A61B 10/00 (2006.01) A61B 8/00 (2006.01) G01S 15/89 (2006.01) G10K 11/32 (2006.01)

Patent

CA 1091337

PATENT APPLICATION of WESTON A. ANDERSON for LENS SYSTEM FOR ACOUSTICAL IMAGING ABSTRACT OF THE DISCLOSURE An object surrounded by media of differing acoustical impedances (e.g., an anatomical organ surrounded by other kinds of tissue within the human body) is acoustically imaged by an array of ultrasonic transducers affixed to the outer surface of an ultrasonic lens. In a preferred embodiment, the lens is homocentric, with the common center of curvature of the inner and outer surfaces of the lens being located at a relatively small acoustic aperture in the body so that object points distributed over a relatively large solid angle from the aperture can be imaged with minimum lens aberations. Where the object to be imaged is a human heart, the acoustic aperture is most conveniently located at an intercostal space between adjacent ribs. - 1 -

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