| 人体软组织微观结构的超声散射分析 |
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| 引用本文： | 左汉锋,杨兆瑞.人体软组织微观结构的超声散射分析[J].陕西师范大学学报,1997,25(3):44-46. |
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| 作者姓名： | 左汉锋 杨兆瑞 |
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| 作者单位： | 陕西师范大学应用声学研究所，西安医科大学第一临床医学院 |
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| 摘 要： | 分别利用ＡＲ倒谱和小波变换的方法，研究脾脏组织超声散射元的平均间距．结果表明，离体和在体情况下组织散射元的平均间距不同．ＡＲ倒谱和小波变换相结合是确定组织散射元间距的有效方法．
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| 关 键 词： | 脾脏 超声散射 平均间距 小波变换 |
Analytic proof of extended optic source coherence |
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| Guo Hongxia,Wang Binghe.Analytic proof of extended optic source coherence[J].Journal of Shaanxi Normal University: Nat Sci Ed,1997,25(3):44-46. |
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| Authors: | Guo Hongxia Wang Binghe |
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| Abstract: | From the mechanism of the optic source irradiation, the coherence of extended optic source is analysed using Fourier analysis method and the principle of vibration superposition. It is proved that all extended optic sources are incoherent with each other, that the so called point optic source is actually a kind of idealized optic source and that obtaining coherent optic source is far more difficult than obtaining coherent mechanical wave source. |
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| Keywords: | extended optic source wave series Fourier analysis coherence |
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