Justin A. Reed;Gregory P. Darlington;Tim Etchells;Jessica E. Parsons;Charles D. Emery;Barry Friemel
发明人:
Barry Friemel,Jessica E. Parsons,Charles D. Emery,Gregory P. Darlington,Justin A. Reed,Tim Etchells
申请号：
US12606129
公开号：
US08480600B2
申请日:
2009.10.26
申请国别(地区):
US
年份:
2013
代理人:
摘要：
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.
