Title :
Capon Beamforming for Active Ultrasound Imaging Systems
Author :
Holm, Sverre ; Synnevåg, Johan-Fredrik ; Austeng, Andreas
Author_Institution :
Waves & Acoust. Lab., ESPCI, Paris
Abstract :
Medical ultrasound imaging has unique requirements regarding spatial and amplitude resolution, near-field focusing, wide bandwidth, and real-time operation. Only recently has Capon beamforming been adapted to this. We give examples of images of point targets, cysts, and regions dominated by speckle and discuss how subaperture smoothing, diagonal loading and range/time averaging must be balanced for best performance.
Keywords :
array signal processing; medical image processing; ultrasonic imaging; Capon beamforming; active ultrasound imaging systems; amplitude resolution; diagonal loading; medical ultrasound imaging; near-field focusing; real-time operation; spatial resolution; speckle; subaperture smoothing; wide bandwidth; Acoustic imaging; Apertures; Array signal processing; Biomedical imaging; Delay; High-resolution imaging; Image resolution; Sonar; Spatial resolution; Ultrasonic imaging;
Conference_Titel :
Digital Signal Processing Workshop and 5th IEEE Signal Processing Education Workshop, 2009. DSP/SPE 2009. IEEE 13th
Conference_Location :
Marco Island, FL
Print_ISBN :
978-1-4244-3677-4
Electronic_ISBN :
978-1-4244-3677-4
DOI :
10.1109/DSP.2009.4785896
