摘要:
The present invention discloses an ultrasound imaging system and method which make a harmonic image of a good SNR(signal-to-noise ratio) by effectively removing fundamental frequency components through a pulse-compressing using the weighted chirp signals. The ultrasound imaging system includes: a transducer array for converting weighted chirp signals to ultrasound signals, and transmitting the ultrasound signals to a target object; a receiver for receiving signals reflected from the target object; a pulse-compressor for selectively pulse-compressing fundamental frequency components or harmonic frequency components in the reflected signals; and a producer for producing receive-focused signals from the pulse-compressed signals. Therefore, the ultrasound imaging system can form ultrasound image using the fundamental frequency components, and can form ultrasound harmonic image using the harmonic frequency components according to 2fo-correlation method or 2fo-correlation(PI) method.
摘要:
A three-dimensional (3D) ultrasound imaging system performs receive-focusing at voxels corresponding to pixels of a display device. The system comprises a display device; transducers for transmitting ultrasound signals toward the object and receiving echo signals from a voxel corresponding to a pixel on the display device, wherein the voxel is on a scanning region of the object; an RF volume memory for storing signals from the transducers; a signal processor for processing the stored signals to obtain 3D data sets with respect to the voxel; and an image former for forming the 3D image.
摘要:
Disclosed is a synthetic aperture focusing method for ultrasound imaging system based on planar waves. The planar waves are transmitted to a target object with an angle of wave propagation corresponding to a center position of a receive subaperture, and echo signals reflected from the target object are received by the receive subaperture, and the received echo signals are stored in a receive pattern memory, and the stored echo signals are dynamic-focused, and finally the dynamic-focused signals are combined to form at least one beam pattern.