Material decomposition from a single x-ray projection via single-grid phase contrast imaging
Abstract
This study describes a new approach for material decomposition in x-ray imaging, utilizing phase contrast both to increase sensitivity to weakly attenuating samples and to act as a complementary measurement to attenuation, therefore allowing two overlaid materials to be separated. The measurements are captured using the single-exposure, single-grid x-ray phase contrast imaging technique, with a novel correction that aims to remove propagation-based phase effects seen at sharp edges in the attenuation image. The use of a single-exposure technique means that images can be collected in a high-speed sequence. Results are shown for both a known two-material sample and for a biological specimen.
- Publication:
-
Optics Letters
- Pub Date:
- July 2020
- DOI:
- 10.1364/OL.389770
- arXiv:
- arXiv:2002.04417
- Bibcode:
- 2020OptL...45.4076G
- Keywords:
-
- Physics - Medical Physics;
- Electrical Engineering and Systems Science - Image and Video Processing
- E-Print:
- doi:10.1364/OL.389770