| 一种基于chirp编码的高帧速率超声成像方法 |
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| 引用本文： | 王靓,汤文文,舒淑丽. 一种基于chirp编码的高帧速率超声成像方法[J]. 现代生物医学进展, 2008, 8(2): 354-355,360 |
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| 作者姓名： | 王靓 汤文文 舒淑丽 |
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| 作者单位： | 东南大学信息科学与工程学院,南京,210096 |
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| 摘 要： | 在医学超声成像系统中,帧速率由每帧图像的扫查发射次数所决定.同时发射多条波束可以提高图像的帧速率,但是这会带来不同波束间相互干扰的问题,形成伪像.本文基于编码激励的原理,提出了一种新的高帧速率成像方法.该方法通过发射一组线性频率调制编码信号,有效的降低了波束间的互扰.可以在不影响图像质量的情况下,成倍的提高图像的帧速率.
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| 关 键 词： | 编码激励 线性频率调制 高帧速率成像 互扰 chirp 编码信号 帧速率 医学超声 成像方法 Coding Based Method Ultrasound Imaging Frame Rate 情况 图像质量 影响 线性频率调制 原理 编码激励 伪像 问题 相互干扰 波束 |
| 文章编号： | 1673-6273（2008）02-0354-02 |
| 收稿时间： | 2007-09-18 |
| 修稿时间： | 2007-10-15 |
A High Frame Rate Ultrasound Imaging Method Based on Chirp Coding |
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| WANG Liang,TANG Wen-wen,SHU shu-li. A High Frame Rate Ultrasound Imaging Method Based on Chirp Coding[J]. Progress in Modern Biomedicine, 2008, 8(2): 354-355,360 |
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| Authors: | WANG Liang TANG Wen-wen SHU shu-li |
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| Abstract: | In medical ultrasound imaging systems, frame rate is determined by the number of transmit events per frame. Frame rate can be increased with simultaneous transmission of a number of coded signals, but it will cause the interferences coming from different beams, and a pseudo-image is produced, In this article, a new method for high frame rate imaging is given which is based on the theory of coded excitation. The cross-talks between different beams can be reduced by transmitting a group of chirp coded signals simultaneously. It shows that this method can doubled the frame rate without degradation of image quality. |
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| Keywords: | Coded excitation Chirp High Frame Rate Imaging Cross-talk |
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