A new method of analyzing edge effect in phase contrast imaging with incoherent X-rays

被引：51

作者：

Ishisaka, A ^{[1
]}

Ohara, H ^{[1
]}

Honda, C ^{[1
]}

机构：

[1] Konica Corp, Med & Graph Imaging R&D Ctr, Hino, Tokyo 1918511, Japan

来源：

OPTICAL REVIEW | 2000年 / 7卷 / 06期

关键词：

phase contrast; incoherent X-ray; edge effect; half-width of edge enhancement; Cu; Mo; and W anodes X-ray tubes; refraction;

D O I：

10.1007/s10043-000-0566-z

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A method has been devised to calculate the half-width of the phase contrast enhanced edge of an X-ray image with incoherent X-rays. This method is based on changes in the wave fronts of X-rays after penetrating an object, and it takes into account the blur due to penumbra observed in practical radiographic imaging. The method closely predicted edge enhancement when images of a plastic fiber were produced with practical X-ray tubes (Cu, Mo, and W anodes with focus-diameters of 10, 100, and 40 mum, respectively). Thus, the method shows promise in facilitating phase contrast X-ray imaging in both medical radiography and non-destructive inspection using incoherent X-rays from X-ray tubes with substantial focus-sizes.

引用

页码：566 / 572

页数：7

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