Surgery – Truss – Pad
Patent
1986-10-08
1988-07-26
Jaworski, Francis J.
Surgery
Truss
Pad
73626, A61B 1000
Patent
active
047593725
ABSTRACT:
An ultrasonic probe used for ultrasonic diagnosis apparatus. A plurality of ultrasonic transducer elements are provided in a convexity at the tip of a probe so as to constitute a convex array ultrasonic probe. The curvature radius of the convexity is set at not greater than 12 mm and the pitch of adjacent transducer elements is set at not greater than 1/30 of the curvature radius and a ratio .DELTA./Y is set at not greater than 1/35, where Y represents the beam focal distance and .DELTA. represents the lateral resolution of the probe.
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Hovelice, J. F. et al., "Medical Ultrasonic Imaging: An Overview", Proc. IEEE, vol. 67, No. 4, Apr. 1979.
Wells, P. N. T., "Biomedical Ultrasonics", Academic Press, London, 1977, pp. 244-245.
Ikeda Hiroshi
Katakura Kageyoshi
Kondo Shin-ichi
Ogawa Toshio
Umemura Shin'ichiro
Hitachi , Ltd.
Hitachi Medical Corp.
Jaworski Francis J.
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