In order to address the limitations of traditional handheld ultrasound scanning systems,such as narrow field of view,and non-standardization,this article presents the design and implementation of comprehensive ultrasound imaging system based on a ring array.This system encompasses a 512-element ultrasonic annular array,a high-performance 256/1 024-channel acquisition circuit,an efficient PCIe-based data transmission module,and comprehensive software for acquisition control and rapid imaging.The multi-channel acquisition circuit comprising eight 32/128 ultrasonic transceiver control modules enables full-matrix data acquisition and high-speed transmission of 512 annular array elements within 12 seconds,achieving a remarkable data transmission efficiency of 1.2 Gb/s.The system boasts a broadband frequency range of 0.16～15 MHz and adjustable A/D sampling rates ranging from 12.5～100 MHz,which meets the diverse requirements of clinical and experimental applications.The acquisition control software facilitates multi-mode ultrasound data acquisition,enabling the rapid imaging monitoring and secure storage of full-matrix data for subsequent precise image reconstruction.Phantom and in-vivo experiments show that the system can obtain an imaging range exceeding 10 cm×10 cm,resolve 1 mm abnormalities accurately,and provide detailed visualization of interfaces within biological tissues such as fat,muscle,and bone.These results demonstrate the system's capability of performing circumferential scanning,producing comprehensive and standardized medical ultrasound images with a wide field of view.
关键词
医学超声/超声成像系统/环阵换能器/数据采集系统
Key words
medical ultrasound/ultrasound imaging systems/ring transducer/data acquisition system
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