| Fourier变换重建超声图像的研究 |
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| 引用本文： | 彭虎,陆建宇,冯焕清,张作生.Fourier变换重建超声图像的研究[J].中国科学技术大学学报,2003,33(5):619-624. |
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| 作者姓名： | 彭虎 陆建宇 冯焕清 张作生 |
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| 作者单位： | 1. 中国科学技术大学电子科学技术系,安徽,合肥,230026
2. 托莱多大学生物工程系,美国,托莱多,43600 |
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| 基金项目： | 中国科学技术大学归国留学基金资助 (KB2 510 ) |
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| 摘 要： | 基于有限衍射波理论的高帧率(high frame rate，HFR)超声成像系统是通过发射平面波成像的．由于采用平面波，故成像区域为矩形．为了得到扇形成像，提出了一种更一般化的Fourier重建图像的方法，它同样基于一次发射就可重建超声图像．与原HFR方法不同的是发射声场可以是非平面波．在非平面波声场中进行了计算机仿真．由于采用了由零阶汉克尔函数所定义的圆柱场，获得了具有扇形形状的超声图像，仿真结果显示了新方法的有效和更具有一般性的特点．
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| 关 键 词： | 高帧率 平面波 汉克尔函数 |
| 文章编号： | 0253-2778(2003)05-0619-06 |
A Study on Ultrasonic Image Construction With Fourier Transform |
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| PENG Hu ,LU Jian-yu ,FENG Huan-qing ,ZHANG Zuo-sheng.A Study on Ultrasonic Image Construction With Fourier Transform[J].Journal of University of Science and Technology of China,2003,33(5):619-624. |
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| Authors: | PENG Hu LU Jian-yu FENG Huan-qing ZHANG Zuo-sheng |
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| Institution: | PENG Hu 1,LU Jian-yu 2,FENG Huan-qing 1,ZHANG Zuo-sheng 1 |
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| Abstract: | The high frame rate (HFR) ultrasosnic imaging system, which is developed based on limited diffraction beams, transmits plane wave to construct an image. Because of the plane wave, the area of image assumes an rectangular form. In order to get sector form images, a generic Fourier image construction is developed. Ultrasonic images can be constructed with a single transmission, which is a non-plane wave. To verify our theory, computer simulations have been performed in the non-plane wave field. The field is a cylindrical one defined by zero order Hankle function, so images with sector format have been obtained. The simulation results are consistent with our theory. |
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| Keywords: | high frame rate plane wave Hankle function |
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