The Design and Analysis of Split Row-Column Addressing Array for 2-D Transducer.
For 3-D ultrasound imaging, the row-column addressing (RCA) with 2Nconnections for anN×N2-D array makes the fabrication and interconnection simpler than the fully addressing withN² connections. However, RCA degrades the image quality because of defocusing in signal channel direction in the transmit event. To solve this problem, a split row-column addressing scheme (SRCA) is proposed in this paper. Rather than connecting all the elements in the signal channel direction together, this scheme divides the elements in the signal channel direction into several disconnected blocks, thus enables focusing beam access in both signal channel and switch channel directions. Selecting an appropriate split scheme is the key for SRCA to maintaining a reasonable tradeoff between the image quality and the number of connections. Various split schemes for a 32 × 32 array are fully investigated with point spread function (PSF) analysis and imaging simulation. The result shows the split scheme with five blocks (4, 6, 12, 6, and 4 elements of each block) can provide similar image quality to fully addressing. The splitting schemes for different array sizes from 16 × 16 to 96 × 96 are also discussed.
Department of Bio-medical Engineering, School of Life Science and Technology, "Image Processing and Intelligence Control" Key Laboratory of Education Ministry of China, Huazhong University of Science and Technology, Wuhan 430074, China. leemax@126.com.
Xu
X
Li
Department of Bio-medical Engineering, School of Life Science and Technology, "Image Processing and Intelligence Control" Key Laboratory of Education Ministry of China, Huazhong University of Science and Technology, Wuhan 430074, China. jiayanping163@126.com.
Yanping
Y
Jia
Department of Bio-medical Engineering, School of Life Science and Technology, "Image Processing and Intelligence Control" Key Laboratory of Education Ministry of China, Huazhong University of Science and Technology, Wuhan 430074, China. myding@hust.edu.cn.
Mingyue
M
Ding
Department of Bio-medical Engineering, School of Life Science and Technology, "Image Processing and Intelligence Control" Key Laboratory of Education Ministry of China, Huazhong University of Science and Technology, Wuhan 430074, China. m.yuchi@hust.edu.cn.
Ming
M
Yuchi
3-D ultrasound imaging; imaging simulation; row-column addressing; split schemes
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