| 医用超声成像系统调制传递函数的探讨 |
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| 引用本文： | 张艳丽 冯树理 彭明辰. 医用超声成像系统调制传递函数的探讨[J]. 医疗设备信息, 2003, 18(4): 8-11 |
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| 作者姓名： | 张艳丽 冯树理 彭明辰 |
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| 作者单位： | [1]首都医科大学，北京100054 [2]首都医科大学宣武医院工程科，北京100053 |
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| 摘 要： | 本文采用两种方法，利用超声多组织体模计算超声成像系统的调制传递函数(MTF)。首先，根据超声成像及体模内部结构的特点，将体模内的分辨目标群视作条形输入，提出对比度法求得系统的MTF；其次，利用体模内相同深度处的目标群构造系统的线扩散函数，经过傅里叶变换得到系统的MTF，并对两种方法取得的结果进行了分析。
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| 关 键 词： | 医用超声成像系统 调制传递函数 分辨率 对比度 线扩散函数 医学影像学 |
| 文章编号： | 1007-7510(2003)04-0008-04 |
Study on the modulation transfer function of ultrasonic imaging system |
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| ZHANG Yan-li,FENG Shu-li,PENG Ming-chen. Study on the modulation transfer function of ultrasonic imaging system[J]. Information of Medical Equipment, 2003, 18(4): 8-11 |
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| Authors: | ZHANG Yan-li FENG Shu-li PENG Ming-chen |
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| Affiliation: | ZHANG Yan-li1,FENG Shu-li2,PENG Ming-chen2 |
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| Abstract: | Modulation Transfer Function of ultrasonic imaging system is calculated by two methods using multi-tissue ultrasound phantom. The first, we look resolution target of phantom as changing input with spatial frequency, calculate MTF of ultrasound system by contrast method. The second, we construct the line spread function of ultrasound system using horizontal plane target and vertical plane target of phantom, then transform it by Fourier transform method, then we obtain the MTF of system. At last, we analyze the results of two methods. |
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| Keywords: | Modulation Transfer Function resolution contrast line spread function |
| 本文献已被 CNKI 维普 等数据库收录！ |
