Minimally redundant 2-D array designs for 3-D medical ultrasound imaging

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IEEE-Inst Electrical Electronics Engineers Inc

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Araştırma projeleri

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In real-time ultrasonic 3-D imaging, in addition to difficulties in fabricating and interconnecting 2-D transducer arrays with hundreds of elements, there are also challenges in acquiring and processing data from a large number of ultrasound channels. The coarray (spatial convolution of the transmit and receive arrays) can be used to find efficient array designs that capture all of the spatial frequency content (a transmit-receive element combination corresponds to a spatial frequency) with a reduced number of active channels and firing events. Eliminating the redundancies in the transmit-receive element combinations and firing events reduces the overall system complexity and improves the frame rate. Here we explore four reduced redundancy 2-D array configurations for miniature 3-D ultrasonic imaging systems. Our approach is based on 1) coarray design with reduced redundancy using different subsets of linear arrays constituting the 2-D transducer array, and 2) 3-D scanning using fan-beams (narrow in one dimension and broad in the other dimension) generated by the transmit linear arrays. We form the overall array response through coherent summation of the individual responses of each transmit-receive array pairs. We present theoretical and simulated point spread functions of the array configurations along with quantitative comparison in terms of the front-end complexity and image quality.


This work was supported in part by the National Institutes of Health under Grant 99059, in part by TUBITAK of Turkey under Grant 10610333, and in part by Isik University under Grant BAP-05B301.

Anahtar Kelimeler

Beamforming, Biomedical ultrasonics, Image reconstruction, Phased arrays, Ultrasonic imaging, Algorithms, Computer Simulation, Image processing, computer-assisted, Imaging, three-dimensional, Transducers, Ultrasonography, Acoustic waves, Antenna phased arrays, Array processing, Biped locomotion, Data processing, Image quality, Imaging systems, Medical imaging, Optical transfer function, Optoelectronic devices, Piezoelectric transducers, Quality assurance, Redundancy, Restoration, Rough set theory, Three dimensional, Ultrasonics, 2D-arrays, 3D imaging, 3D-scanning, Active channels, Array configurations, Array design, Array pair, Array response, Coherent summation, Fan-beams, Frame rate, Linear arrays, Medical ultrasound imaging, One dimension, Phased arrays, Point-Spread function, Quantitative comparison, Reduced redundancy, Spatial convolution, Spatial frequency, System complexity, Transducer array, Echography, Methodology, Three dimensional imaging


IEEE Transactions on Medical Imaging

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Karaman, M., Karaman, M., Wygant, I. O., Oralkan, O. & Khuri-Yakub, B. T. (2009). Minimally redundant 2-D array designs for 3-D medical ultrasound imaging. IEEE Transactions on Medical Imaging, 28; 31(7), 1051-1061. doi:10.1109/TMI.2008.2010936