Feasibility of using energy-resolving detectors in differential phase-contrast imaging

Pavlo Baturin

doi:10.1117/12.2216119

22 March 2016 Feasibility of using energy-resolving detectors in differential phase-contrast imaging

Pavlo Baturin

Proceedings Volume 9783, Medical Imaging 2016: Physics of Medical Imaging; 97835G (2016) https://doi.org/10.1117/12.2216119
Event: SPIE Medical Imaging, 2016, San Diego, California, United States

Abstract

In a common clinical setting, conventional absorption-based imaging provides relatively good contrast between bonelike and soft-tissue materials. The reliability of material differentiation, however, is hampered when materials with similar absorption properties are scanned. This problem can be addressed by utilizing a spectral imaging technique whereby multiple X-ray measurements are taken at different beam conditions. In this work, we discuss the possibility of using a spectral imaging approach in a grating-based, differential-phase contrast-imaging (DPCI) modality. Two approaches, dual exposure with a conventional flat-panel detector (FPD) and a single exposure with a photon-counting energy-resolving detector (PCD), were reviewed. The feasibility of a single-exposure DPCI and a two-bin PCD setup was assessed quantitatively by a least-squares minimization algorithm applied to an X-ray diffraction pattern. It was shown that a two-peak-shaped X-ray spectrum can allow PCDs to be placed unambiguously at single Talbot distances making it possible to simultaneously detect photons in each energy bin with comparable efficiencies. The results of this work can help build a bridge between two rapidly developing imaging modalities, X-ray spectral imaging and X-ray DPCI.

Citation Download Citation

Pavlo Baturin "Feasibility of using energy-resolving detectors in differential phase-contrast imaging", Proc. SPIE 9783, Medical Imaging 2016: Physics of Medical Imaging, 97835G (22 March 2016); https://doi.org/10.1117/12.2216119

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available