RECEIVED WAVE PHASE-SHAPING CIRCUIT FOR ULTRASONIC DIAGNOSTIC APPARATUS

摘要

PURPOSE:To enable the obtaining of a plurality of ultrasonic beams in real time without enlarging the circuit size in a received wave phase-shaping circuit for an ultrasonic diagnostic apparatus. CONSTITUTION:Analog variable delay lines at respective channels of array vibrator elements 11-1n are arranged in plurality 311 and 312 per vibrator element 11 while switch gears 101-10n are provided to connect the analog variable delay lines 311-3n2 with a mutual switching. The switch gears 101-10n are controlled in switching by a control signal from a control circuit section 7 while digital delay means (41-4n, and 51-5n) are controlled in time division. This enables the obtaining of a plurality of ultrasonic beams in real time without enlarging the whole size of a received wave phase-shaping circuit dispensing with a plurality of systems thereof.