生物组织X光照片的层析合成法的研究——Ⅱ.优化层片特性的模拟 |
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引用本文: | 齐翔林,汪云九.生物组织X光照片的层析合成法的研究——Ⅱ.优化层片特性的模拟[J].生物物理学报,1991,7(1):10-13. |
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作者姓名: | 齐翔林 汪云九 |
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作者单位: | 中国科学院生物物理所
,北京 |
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摘 要: | 在圆层析合成法中,我们提出了两种X光扫描采样的方法.一种是以零阶贝塞尔函数为窗函数,采用单个的采样园锥.另一种是以圆长球函数为窗函数,用Fourier-Bessel级数展开的系数为权,采用多重采样圆锥.在适当选择窗函数的参数下,给出了采样几何学的设计及对不同窗函数的衰减特性进行了模拟.
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关 键 词: | X光照片 层析合成法 生物组织 |
CIRCULAR TOMOSYNTHESIS FOR X-RAY RADIOGRAPHS OF TISSUES (2) SIMULATION OF OPTIMAL TOMOSYNTHESIS SLICE |
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Abstract: | In 3-dimensional reconstruction of tomosynthesis, we have proposed two kinds of scanning sample methods for X-ray radiographs. One is single-cone sampling tomosynthesis which corresponds to the zero order Bessel window function. Other is the prolate window function for a triple-cone sampling tomosynthesis. With the proper choice of the windnw parameters, the sampling geometry was designed and the attenuations of the different window functions were simulated. |
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