Abstract:
:As a new method, x-ray diffraction enhanced imaging (DEI) has extremely high sensitivity for weakly absorbing low-Z samples in medical and biological fields. Conventional performance parameters, such as spatial resolution and low-contrast resolution, are not enough to describe the characteristics of a DEI system. This paper focuses on refraction-angle resolution which describes the ability of a DEI system to differentiate the x-rays refracted by the sample. The analysis of refraction-angle resolution is composed of two parts: the analysis of the single DEI image measured in a certain position of the rocking curve and the analysis of the refraction-angle image calculated by extraction methods. A 2D computer simulation experiment is performed to prove the results of the analyses. The limitations and conclusions of refraction-angle resolution are described in the end.
journal_name
Phys Med Bioljournal_title
Physics in medicine and biologyauthors
Huang ZF,Kang KJ,Li Zdoi
10.1088/0031-9155/51/12/002subject
Has Abstractpub_date
2006-06-21 00:00:00pages
3031-9issue
12eissn
0031-9155issn
1361-6560pii
S0031-9155(06)20216-1journal_volume
51pub_type
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