U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Method for ultrasound imaging

Patent 5113866 Issued on May 19, 1992. Estimated Expiration Date: Icon_subject December 24, 2010. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Ultrasonic sector-scan probe
Patent #: 4580451
Issued on: 04/08/1986
Inventor: Miwa ,   et al.

Ultrasound scanner for tissue characterization
Patent #: 4658827
Issued on: 04/21/1987
Inventor: He ,   et al.

Method and apparatus for ultrasonically scanning a subject with an ultrasound head
Patent #: 4691570
Issued on: 09/08/1987
Inventor: Hassler

Method and apparatus for adaptive focusing in a medical ultrasound imaging apparatus
Patent #: 4817614
Issued on: 04/04/1989
Inventor: Hassler ,   et al.

Ultrasonic diagnosis apparatus
Patent #: 4830016
Issued on: 05/16/1989
Inventor: Tamano ,   et al.

Apodization of ultrasound transmission
Patent #: 4841492
Issued on: 06/20/1989
Inventor: Russell

Adaptive coherent energy beam formation using iterative phase conjugation Patent #: 4989143
Issued on: 01/29/1991
Inventor: O'Donnell, et al.

Inventors

Assignee

Application

No. 632924 filed on 12/24/1990

US Classes:

600/447, Electronic array scanning73/597, Velocity or propagation time measurement73/625, Having plural sonic type transmitter or receiver transducers600/441, Having B-scan and Doppler600/442Tissue attenuation or impedance measurement or compensation

Examiners

Primary: Jaworski, Francis J.
Assistant: Manuel, George

Attorney, Agent or Firm

Foreign Patent References

  • 0320303 EP 06/13/1989

International Class

A61B 008/00

Foreign Application Priority Data

1990-01-15 DE

Abstract

A method for generating an ultrasound image of a plane of a section of an examination subject having a non-uniform speed of sound distribution near the surface of the subject includes the steps of scanning the section plane line-by-line with a transducer array in an adaption phase and calculating values from the received, focussed echo signals which deviate from anticipated values which would arise given a uniform speed of sound distribution, the calculation being undertaken by a cross-correlation function of neighboring elementary transducers. Correction values are formed from the deviating values depending on the angle of incidence of the echo signals on the elementary transducers. In an imaging phase following the adaption phase, the delay values for focussing are modified dependent on the incident angle of the echo signals and dependent on the correction values for this incident angle. Image disturbances due to the non-uniform speed of sound distribution can thus be compensated even in the presence of thick, transducer-proximate disturbing layers in the examination subject.

PatentsPlus Images
Enhanced PDF formats
loading...
PatentsPlus: add to cart
PatentsPlus: add to cartSearch-enhanced full patent PDF image
$9.95more info
PatentsPlus: add to cart
PatentsPlus: add to cartIntelligent turbocharged patent PDFs with marked up images
$18.95more info
 
Sign InRegister
Username  
Password   
forgot password?