Diffuse focus ultrasound hyperthermia system
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United States of America Patent
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Jan 16, 1990
Grant Date -
N/A
app pub date -
Jun 21, 1988
filing date -
Jun 21, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system for delivering ultrasound hyperthermic therapy to a subject includes a plurality of piezoelectric ultrasound transducer elements arranged in a two-dimensional array to provide multiple sources of ultrasonic energy, and variable activation elements for activating the transducer elements individually and at variable electrical energy levels. A plurality of lens elements is provided for transmitting the multiple sources of ultrasonic energy to the subject, in conjunction with focusing elements which individually vary the attitude of the lens elements to change the focal regions of the individual lenses. The transducer elements and lens elements can be corresponding 'pie-slice' sectors arranged in a circular array, in combination with a central circular transducer and lens.
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