METHOD AND APPARATUS FOR FEEDBACK CONTROL OF HIFU TREATMENTS

Title:

METHOD AND APPARATUS FOR FEEDBACK CONTROL OF HIFU TREATMENTS

Document Type and Number:

WIPO Patent Application WO/2010/048633

Kind Code:

A3

Abstract:

HIFU therapy to a desired tissue site is controlled based on detected changes in one or more characteristics of a received backscatter signal resulting from exposure of the tissue to HIFU or other interrogation signals. In one embodiment, the bloom of backscatter signals outward from a treatment region (e.g., towards the HIFU transducer) is detected and monitored. Once the bloom reaches a predetermined location, treatment is stopped. Other signal characteristics such as angular distribution of frequency components in the backscatter signal, changes in reflection, power required to saturate a tissue characteristic, changes in attenuation and changes in a cumulative energy distribution function of the backscatter signal that change as a result of the application of HIFU power are also used to control the delivery of HIFU signals in accordance with other embodiments of the disclosed technology.

Inventors:

FRIEMEL BARRY (US)
PARSONS JESSICA E (US)
EMERY CHARLES D (US)
DARLINGTON GREGORY P (US)
REED JUSTIN A (US)
ETCHELLS TIM (US)

Application Number:

PCT/US2009/062127

Publication Date:

August 05, 2010

Filing Date:

October 26, 2009

Export Citation:

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Assignee:

MIRABILIS MEDICA INC (US)
FRIEMEL BARRY (US)
PARSONS JESSICA E (US)
EMERY CHARLES D (US)
DARLINGTON GREGORY P (US)
REED JUSTIN A (US)
ETCHELLS TIM (US)

International Classes:

A61N7/00; A61N7/02

Domestic Patent References:

WO2006129099A1

2006-12-07

Foreign References:

US20070270792A1	2007-11-22
US20080154131A1	2008-06-26
US20070083120A1	2007-04-12
US20070255267A1	2007-11-01

Other References: