| 摘要: |
| 传统的自由臂三维超声成像系统不能做到实时交互的重建.介绍了实时交互的自由臂三维超声成像系统RIF-3DUSIS(real-time and interactive freehand three-dimensional ultrasound imaging system),包括其整体设计思想、三维重建方法和软硬件系统结构.RIF-3DUSIS的特点是:(1) 在扫描过程中,实时进行采集和三维重建,并使得操作者能够对重建体模型进行实时的交互操作;(2) 在扫描的同时,不仅通过动态显示重建体提供可视化的反馈信息,而且不断更新显示已重建的比率,以定量地引导扫描重建的进度;(3) 在每一步操作之前都会给出提示信息,引导操作者进行操作.实验结果表明了RIF-3DUSIS实时重建的有效性和动态交互的灵活性. |
| 关键词: 三维超声成像 自由臂 重建 实时 动态交互 |
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| 基金项目:Supported by the National Natural Science Foundation of China under Grant No.60532050 (国家自然科学基金); the National Outstanding Youth Foundation of China under Grant No.60225008 (国家杰出青年科学基金); the National High-Tech Research and Development Plan of China under Grant No.2004AA420060 (国家高技术研究发展计划(863)); the Beijing Natural Science Foundation of China under Grant Nos.4042024, 4051002 (北京市自然科学基金) |
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| A Real-Time and Interactive Freehand Three-Dimensional Ultrasound Imaging System |
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DAI Ya-Kang,TIAN Jie,XUE Jian
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| Abstract: |
| Conventional freehand three-dimensional (3-D) ultrasound imaging systems cannot achieve real-time and interactive reconstruction. The overall design idea, 3-D reconstruction method, and hardware/software system structure of the developed real-time and interactive freehand 3-D ultrasound imaging system, which is called RIF-3DUSIS, is introduced in this article. The characteristics of RIF-3DUSIS are as follows: (1) acquisition, 3-D reconstruction, and interactive manipulation of the reconstructed volume model in real time during scanning process; (2) While scanning, not only displaying reconstructed volume dynamically to provide visual feedback, but also updating display of reconstructed ratio sequentially to conduct reconstruction plan quantitatively; (3) Showing instruction information before each operation step so as to instruct operator’s work. Experimental results indicate the effectiveness of real-time reconstruction and the flexibility of dynamic interaction of RIF-3DUSIS. |
| Key words: 3-D ultrasound imaging freehand reconstruction real-time dynamic interaction |
