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Ultrasound imaging preferable to ultrasound contrast echography

  • US 5,724,976 A
  • Filed: 12/27/1995
  • Issued: 03/10/1998
  • Est. Priority Date: 12/28/1994
  • Status: Expired due to Term
First Claim
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1. An ultrasound probe, comprising:

  • a transducer formed with a piezoelectric member for performing a conversion between an electric signal and an ultrasound signal bidirectionally; and

    at least three electrodes including a ground electrode attached to the piezoelectric member so as to have a passband characteristic of at least two kinds of frequency components whose center frequencies retain a multiple relation with each other and represent a multi-humped frequency characteristic.

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