| 数字插值波束形成器在医学超声成像中的应用 |
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| 引用本文： | 舒淑丽,汤文文,王靓. 数字插值波束形成器在医学超声成像中的应用[J]. 中国医疗器械杂志, 2007, 31(5): 328-329 |
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| 作者姓名： | 舒淑丽 汤文文 王靓 |
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| 作者单位： | 东南大学信息科学与工程学院,江苏,南京,210096 |
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| 摘 要： | 在医学超声成像系统中,数字波束形成器是影响其性能及硬件复杂度的关键部分,它要求A/D采样率大大高于奈奎斯特频率以满足延时精度的要求。报告采用数字插值波束形成器,通过插零、滤波的方法实现精延时。结果表明,数字插值波束形成器大大降低了A/D转换电路的复杂度。
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| 关 键 词： | 数字波束形成器 医学超声成像 插值 精延时 |
| 文章编号： | 1671-7104（2007）05-0328-02 |
| 修稿时间： | 2007-05-14 |
Digital Interpolation Beamformer in Medical Ultrasound Imaging |
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| SHU Shu-li,TANG Wen-wen,WANG Liang. Digital Interpolation Beamformer in Medical Ultrasound Imaging[J]. Chinese journal of medical instrumentation, 2007, 31(5): 328-329 |
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| Authors: | SHU Shu-li TANG Wen-wen WANG Liang |
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| Affiliation: | School of Information Science and Engineering,Southeast University,Nanjing,210096 |
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| Abstract: | A digital beamformer in medical ultrasound imaging systems conventionally requires that the returning signals received by transducers are sampled at a rate significantly higher than the Nyquist rate.This paper presents a digital beamformer that employs zero padding followed by digital interpolation filtering to achieve vernier beamformer delays.The experimen- tal results show that the digital interpolation beamformer can greatly decrease the complexity of A/D converter circuitry. |
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| Keywords: | digital beamformer medical ultrasound imaging interpolation vernier delay |
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