Medical ultrasonic imaging system with dynamic focusing

Details Medical ultrasonic imaging system with dynamic focusing Medical ultrasonic imaging system with dynamic focusing

1992-01-31

1993-12-14

Jaworski, Francis

Surgery

Truss

Pad

73625, A61B 800, G01N 2900

Patent

active

052693074

ABSTRACT:
The present invention provides a medical ultrasonic imaging device with dynamic focusing that is capable of operating at high frequencies and providing high resolution. One embodiment of the device includes a plurality of transducers, arranged in either a linear or curved array, for converting an ultrasonic signal received by the device into a plurality of electrical signals. This embodiment of the device also includes a plurality of vector modulators for phase-shifting the plurality of electrical signals to achieve fine focusing. A delay line array is further included in the device that allows each of the phase-shifted electrical signals to be delayed by a selected amount to achieve coarse focusing of the electrical signals. Further included in the device is a summer of summing the time delayed and phase-shifted electrical signals to provide focused image data.

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