Dual mode ultrasonic imager system

Details Dual mode ultrasonic imager system Dual mode ultrasonic imager system

1995-08-17

1996-10-22

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Acoustic image conversion

With memory means

12866005, G03B 4206, A61B 800

Patent

active

055684467

ABSTRACT:
A dual mode ultrasonic imager system operative in both a two dimensional 2-D) mode and doppler mode, includes a plurality of transducers for receiving analog ultrasonic signals and converting them to analog electrical signals, and an analog to digital (A/D) converter system for converting the analog electrical signals to digital signals for further processing. The A/D converter system includes a digital to analog (D/A) converter for converting the digital signals into analog feedback signals, and an analog summer for receiving the analog electrical signals and combining them with the analog feedback signals. An integrator is selectively coupled to receive an output signal from the analog summer and to generate an integrated analog signal. An A/D converter selectively receives, and converts to an equivalent digital signal, one of the integrated analog signal and an output signal of the analog summer. During the 2-D mode, the integrator is bypassed and the A/D converter receives the output signal of the analog summer for conversion to a digital signal. In the doppler mode, the A/D converter receives from the integrator the integrated analog signal and converts it to a digital signal.

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