A partial-dithering strategy for edge-illumination x-ray phase-contrast tomography enabled by a joint reconstruction method
Edge-illumination x-ray phase-contrast tomography (EIXPCT) is a promising imaging technology where partially opaque masks are utilized with laboratory-based x-ray sources to estimate the distribution of the complex-valued refractive index. EIXPCT resolution is mainly determined by the period of a sa...
Saved in:
Published in | Physics in medicine & biology Vol. 65; no. 10; p. 105007 |
---|---|
Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
England
IOP Publishing
15.05.2020
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | Edge-illumination x-ray phase-contrast tomography (EIXPCT) is a promising imaging technology where partially opaque masks are utilized with laboratory-based x-ray sources to estimate the distribution of the complex-valued refractive index. EIXPCT resolution is mainly determined by the period of a sample mask, but can be significantly improved by a dithering technique. Here, dithering means that multiple images per tomographic view angle are acquired as the object is moved over sub-pixel distances. Drawbacks of dithering include increased data-acquisition times and radiation doses. Motivated by the flexibility in data-acquisition designs enabled by a recently developed joint reconstruction method, a novel partial-dithering strategy for EIXPCT data-acquisition is proposed. In this strategy, dithering is implemented at only a subset of the tomographic view angles. The strategy can result in spatial resolution comparable to that of the conventional full-dithering strategy, where dithering is performed at every view angle, but the acquisition time is substantially decreased. Here, the effect of dithering parameters on image resolution is explored. |
---|---|
Bibliography: | Institute of Physics and Engineering in Medicine PMB-109275.R1 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0031-9155 1361-6560 1361-6560 |
DOI: | 10.1088/1361-6560/ab66e2 |