Medical diagnostic ultrasound imaging system and method with fractional harmonic seed signal

摘要

Medical diagnostic ultrasonic imaging systems and methods image at a fractional harmonic such as f0/2 or 3f0/2, where f0 is the fundamental frequency of the associated transmit beam. In order to improve fractional harmonic imaging, the transmit beam includes a fractional harmonic seed component, which may also have a center frequency of f0/2 or 3f0/2. Multiple pulse imaging methods using transmit beams having such fractional harmonic seed components further enhance fractional harmonic imaging.