Hardware system of X-wave generator with simple driving pulses

Xu Li; Yaqin Li; Feng Xiao; Mingyue Ding; Ming Yuchi

doi:10.1117/12.2006716

29 March 2013 Hardware system of X-wave generator with simple driving pulses

Xu Li, Yaqin Li, Feng Xiao, Mingyue Ding, Ming Yuchi

Proceedings Volume 8675, Medical Imaging 2013: Ultrasonic Imaging, Tomography, and Therapy; 867518 (2013) https://doi.org/10.1117/12.2006716
Event: SPIE Medical Imaging, 2013, Lake Buena Vista (Orlando Area), Florida, United States

Abstract

The limited diffraction beams such as X-wave have the properties of larger depth of field. Thus, it has the potential to generate ultra-high frame rate ultrasound images. However, in practice, the real-time generation of X-wave ultrasonic field requires complex and high-cost system, especially the precise and specific voltage time distribution part for the excitation of each distinct array element. In order to simplify the hardware realization of X-wave, based on the previous works, X-wave excitation signals were decomposed and expressed as the superposition of a group of simple driving pulses, such as rectangular and triangular waves. The hardware system for the X-wave generator was also designed. The generator consists of a computer for communication with the circuit, universal serial bus (USB) based micro-controller unit (MCU) for data transmission, field programmable gate array (FPGA) based Direct Digital Synthesizer(DDS), 12-bit digital-to-analog (D/A) converter and a two stage amplifier.The hardware simulation results show that the designed system can generate the waveforms at different radius approximating the theoretical X-wave excitations with a maximum error of 0.49% triggered by the quantification of amplitude data.

Citation Download Citation

Xu Li, Yaqin Li, Feng Xiao, Mingyue Ding, and Ming Yuchi "Hardware system of X-wave generator with simple driving pulses", Proc. SPIE 8675, Medical Imaging 2013: Ultrasonic Imaging, Tomography, and Therapy, 867518 (29 March 2013); https://doi.org/10.1117/12.2006716

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KEYWORDS

Ultrasonics

Field programmable gate arrays

Imaging systems

Lutetium

Data communications

Diffraction

Medical imaging

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