Patent ID: 6213947
Filing Date: 2001-04-10
Classification: A61B,G01S

Abstract:
An ultrasonic transmitting method for a phased-array transducer probe of a medical diagnostic ultrasonic imaging system, said method comprising:(a) launching a first coded ultrasonic transmit beam into a body along a first transmit beam direction, said first coded ultrasonic transmit beam modulated with a first code;(b) launching a second coded ultrasonic transmit beam into the body along a second transmit beam direction, spatially distinct from the first transmit beam direction, before the first transmit beam has left the tissue, said second coded ultrasonic transmit beam modulated with a second code, different from the first code;(c) acquiring receive signals from the body in response to the first and second transmit beams;(d) applying at least some of the receive signals to a first compression filter characterized by a first pulse compression function; and(e) applying at least some of the receive signals to a second compression filter characterized by a second pulse compression function, different from the first pulse compression function.