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:
Sep. 25, 2007
Filed:
Jul. 19, 2004
Bjørn A. J. Angelsen, 7051 Trondheim, NO;
Tonni F. Johansen, 7026 Trondheim, NO;
Trond Karsten Varslot, 7024 Trondheim, NO;
Bjørn A. J. Angelsen, 7051 Trondheim, NO;
Tonni F. Johansen, 7026 Trondheim, NO;
Trond Karsten Varslot, 7024 Trondheim, NO;
Other;
Abstract
An estimation method for correction filters for wavefront aberration correction in ultrasound imaging is given. The aberration is introduced due to spatial variations of the ultrasound propagation velocity in heterogeneous tissue. The correction filters are found as eigenvectors of the cross-correlation matrix of the element signals. In particular, the eigenvectors with a small spatial linear/plane phase component is sought. Detailed methods for calculating the eigenvectors are given.