Insightec-txsonics Ltd

Insightec, Ltd.

Txsonics, Ltd.

Naama Brenner

Shuki Vitek

David A Freundlich

Jacob Vortman

Roni Yagel

A thermal treatment system including a heat applying element for generating thermal doses for ablating a target mass in a patient, a controller for controlling thermal dose properties of the heat applying element, an imager for providing preliminary images of the target mass and thermal images during the treatment, and a planner for automatically constructing a treatment plan, comprising a series of treatment sites that are each represented by a set of thermal dose properties. The planner automatically constructs the treatment plan based on input information including one or more of a volume of the target mass, a distance from a skin surface of the patient to the target mass, a set of default thermal dose prediction properties, a set of user specified thermal dose prediction properties, physical properties of the heat applying elements, and images provided by the imager. The default thermal dose prediction properties are preferably based on a type of clinical application and include at least one of thermal dose threshold, thermal dose prediction algorithm, maximum allowed energy for each thermal dose, thermal dose duration for each treatment site, cooling time between thermal doses, and electrical properties for the heat applying element. The user specified thermal dose prediction properties preferably include at least one or more of overrides for any default thermal dose prediction properties, treatment site grid density; and thermal dose prediction properties not specified as default thermal dose prediction properties from the group comprised of thermal dose threshold, thermal dose prediction algorithm, maximum allowed energy for each thermal dose, thermal dose duration for each treatment site cooling time between thermal doses, and electrical properties for the heat applying element.

Apparatus for controlling thermal dosing in a thermal treatment system

Apparatus for controlling thermal dosing in an thermal treatment system

A focused ultrasound system includes a plurality of transducer elements disposed about and having an angular position with a central axis. Drive signals drive respective transducer elements that include phase shift values based upon the angular position of each respective transducer element. The phase shift values are based upon an oscillation function that oscillates about the central axis between minimal and maximal phase shift values such that a first on-axis focal zone and a second off-axis focal zone are created. An amplitude and frequency of the oscillation function are controlled to adjust relative acoustic energy levels of the first and second focal zones, and to adjust a radius of the second focal zone, respectively. In addition, the drive signals include an additional predetermined phase shift based upon a radial position of each respective transducer element to adjust a focal distance of the focal zones.

System and methods for controlling distribution of acoustic energy around a focal point using a focused ultrasound system

System and methods for performing a therapeutic procedure using focused ultrasound include providing a piezoelectric transducer including a plurality of transducer elements, such as a concave concentric ring array or a liner array of transducer elements. Drive circuitry is coupled to the transducer for providing drive signals to the transducer elements at one of a plurality of discrete RF frequencies. A controller is coupled to the drive circuitry for periodically changing a frequency of the drive signals to one of the plurality of discrete frequencies, while controlling a phase component of the drive signals to maintain the focus of the transducer at a primary focal zone during a single sonication.

Systems and methods for reducing secondary hot spots in a phased array focused ultrasound system

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Haifa, Israel

Naama Brenner