The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 12, 2002
Filed:
Mar. 19, 2001
Richard Yung Chiao, Clifton Park, NY (US);
Anne Lindsay Hall, New Berlin, WI (US);
General Electric Company, Niskayuna, NY (US);
Abstract
An optimized pulse waveform is used to excite contrast microbubbles such that the subharmonic signal may be easily isolated for imaging. By reducing the contribution of transmitted fundamental frequency f within the subharmonic band, the subharmonic imaging quality is improved. This is accomplished by transmitting an optimized pulse waveform and then filtering the received signal to isolate the subharmonic signal for imaging. The optimized pulse waveform has low spectral energy within a band of frequencies centered at f /2 and high spectral energy within another band of frequencies centered at f , where both bands are within the transducer passband. The contrast-generated subharmonic signal is extracted by a receive filter centered at f /2.