南方医科大学学报 ›› 2021, Vol. 41 ›› Issue (5): 767-774.doi: 10.12122/j.issn.1673-4254.2021.05.19

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触发采集式三维超声成像系统的设计与实现

许程耀,李赣萍,黄庆华,杨豪豪,王 青,冯前进   

  • 出版日期:2021-05-20 发布日期:2021-06-11

Establishment of a 3D ultrasound imaging system based on pulse-triggered image acquisition

  • Online:2021-05-20 Published:2021-06-11

摘要: 目的 实现基于VerasonicsTM Vantage128开放式超声平台的触发采集式三维超声成像系统,验证该系统的三维超声成像可行性。方法 触发采集式三维超声成像系统由探头运动控制、图像采集存储以及三维重建显示三部分组成。为提升图像采集的精度,该系统通过采集脉冲控制超声平台外部触发,配合探头机械扫描,完成图像采集;并采用基于体素的三维重建方法进行图像重建与显示;最后,自编超声平台的用户控制界面,直接调控系统各部分功能,并进行标准体模扫描测试以及人体颈动脉扫描,进而评估体模与颈动脉的三维重建效果。结果 本研究构建了触发采集式三维超声成像系统,标准体模扫描测试及颈动脉三维成像实验结果显示,该系统的各部分具备应有功能,可通过自编用户控制界面控制系统软件,对待测物体进行扫描、图像采集和重建显示,得到完整清晰的三维视图和三方向切面图。结论 本文所设计和实现的三维超声成像系统能够实现对体模与生物组织的三维超声成像,为后续相关研究和临床应用奠定了良好基础。

关键词: 三维超声成像系统;触发采集;开放式超声平台;机械扫描

Abstract: Objective To establish a 3D ultrasound imaging system based on pulse-triggered image acquisition using the linear probe on the VerasonicsTM vantage 128 platform and evaluate its performance in scanning standard phantom and human carotid artery. Methods The 3D ultrasound imaging system included 3 modules for probe motion control, image acquisition and storage, and 3D image reconstruction and display. To improve the precision of image acquisition, we used fixed frequency pulses to control the external trigger function combined with mechanical scanning. Voxel-based 3D reconstruction was used for image reconstruction and display. The user interface was designed to allow direct operations of the platform. We carried out scanning tests of standard ultrasound phantom and human carotid artery to evaluate the performance of this imaging system. Results We successfully constructed a 3D ultrasound imaging system based on pulse-triggered image acquisition. The results of standard phantom and human carotid scanning tests showed that each module of the system was fully functional. The self- designed user interface of this ultrasound imaging system allowed full control of the system functions for original image acquisition, 3D image reconstruction, and display of cross-sections in 3 different views. Conclusion This 3D ultrasound imaging system achieves high-quality 3D ultrasound imaging and provides the basis for further study and clinical application of 3D ultrasound imaging.

Key words: 3D ultrasound imaging system; pulse-triggered; opening ultrasound platform; mechanical scanning