METHOD FOR MAPPING TEMPERATURE RISE USING PULSE-ECHO ULTRASOUND

Title:

METHOD FOR MAPPING TEMPERATURE RISE USING PULSE-ECHO ULTRASOUND

Document Type and Number:

WIPO Patent Application WO2005058138

Kind Code:

A3

Abstract:

A method for measuring the temperature rise in anatomical tissue as a result of ultrasound treatment. A first ultrasound signal is obtained (14) prior to treating the anatomical tissue, then a second ultrasound signal is obtained (18) after the tissue is treated. Complex analytic signals are computed (30) from the first and second ultrasound signals, then the depth-dependent delay is computed (32) from the complex analytic signals. An echo strain map is generated (34) from the slope of the depth-dependent delay. The echo strain map is used to estimate the amount of temperature rise from the first ultrasound signal to the second ultrasound signal (38). An image may then be created (22) showing where temperature rise is occurring in the anatomical tissue.

Inventors:

MAST DOUGLAS T (US)
MAKIN INDER RAJ S (US)
BARTHE PETER G (US)
SLAYTON MICHAEL H (US)

Application Number:

PCT/US2004/041799

Publication Date:

November 24, 2005

Filing Date:

December 10, 2004

Export Citation:

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Assignee:

ETHICON ENDO SURGERY INC (US)
MAST DOUGLAS T (US)
FAIDI WASEEM (US)
MAKIN INDER RAJ S (US)
BARTHE PETER G (US)
SLAYTON MICHAEL H (US)

International Classes:

A61B18/00; A61B5/00; A61B8/00; A61B8/08; A61B8/12; A61B17/32; A61B17/34; A61N7/02; H04R17/00; A61B10/00; A61B10/02; A61B17/22; A61B17/28; A61B19/00; A61N7/00; A61B; (IPC1-7): A61B8/00

Foreign References:

US5657760A	1997-08-19
US5944663A	1999-08-31
US6488626B1	2002-12-03

Other References: