Direction-finding system for localization of reflection-causing

Details Direction-finding system for localization of reflection-causing Direction-finding system for localization of reflection-causing

1987-03-13

1989-02-21

Jaworski, Francis J.

Surgery

Truss

Pad

367116, A61B 1000

Patent

active

048056227

ABSTRACT:
A direction-finding system for localization of reflection-causing interfaces in the human body, in particular those of concretions, consists of at least one transmitter (18) emitting pulsed ultrasound and at least two ultrasound receivers (2, 3), of gate circuits (25) associated with each receiver, with variable amplifiers (26), and respective storage media (6) for ultrasonic echo signals (22, 21), and of a following device for sweep magnification (7) consisting of signal memories for readout at an adjustable clock frequency, there being provided variations of the delay differences ML and of the amplitude frequency spectra MF adjustable independently of each other. Connected downstream are devices for auditory direction finding (8, 9, 10, 15).

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