SUB-APERTURE CONTROL IN HIGH INTENSITY FOCUSED ULTRASOUND

WIPO Patent Application WO/2012/134645

A3

Sub-aperture control is provided for high intensity focused ultrasound. Test transmissions are made sequentially from different sub-apertures. The tissue response at the focal regions is determined (40) and used to select (32) sub-apertures. For example, one or more sub-apertures are not used where temperature does not rise above certain threshold or tissue displacement is weak, such as associated with intervening bone or attenuating tissue. Other factors may be used instead or in addition to tissue response at the focal region. Relative proximity of the sub-apertures to a lesion (34), angular distribution of the sub-apertures (36), shape or size of the sub-aperture focal regions as compared to the tissue to be treated (38), or combinations thereof may be used. Once selected (32), the relative weight for each sub-aperture may be adjusted (42) based on measured tissue response for each sub-aperture, such as to provide more equal treatment contribution from different sub-apertures

ZENG XIAOZHENG (US)
SEKINS KEVIN MICHAEL (US)
BARNES STEPHEN (US)

PCT/US2012/024603

January 31, 2013

February 10, 2012

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SIEMENS MEDICAL SOLUTIONS (US)
SIEMENS CORP (US)
ZENG XIAOZHENG (US)
SEKINS KEVIN MICHAEL (US)
BARNES STEPHEN (US)

A61N7/02

WO2007069157A2	2007-06-21
WO2011156624A2	2011-12-15

US20050240127A1	2005-10-27
US20070106157A1	2007-05-10
US20090024034A1	2009-01-22

KO, Jenny G. et al. (170 Wood Avenue SouthIselin, New Jersey, US)

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