Interior tomographic imaging for x-ray coherent scattering (Conference Presentation)

Sean Pang; Zheyuan Zhu

doi:10.1117/12.2266327

7 June 2017 Interior tomographic imaging for x-ray coherent scattering (Conference Presentation)

Sean Pang, Zheyuan Zhu

Proceedings Volume 10187, Anomaly Detection and Imaging with X-Rays (ADIX) II; 101870B (2017) https://doi.org/10.1117/12.2266327
Event: SPIE Defense + Security, 2017, Anaheim, CA, United States

Abstract

Conventional computed tomography reconstructs the attenuation only high-dimensional images. Coherent scatter computed tomography, which reconstructs the angular dependent scattering profiles of 3D objects, can provide molecular signatures that improves the accuracy of material identification and classification. Coherent scatter tomography are traditionally acquired by setups similar to x-ray powder diffraction machine; a collimated source in combination with 2D or 1D detector collimation in order to localize the scattering point. In addition, the coherent scatter cross-section is often 3 orders of magnitude lower than that of the absorption cross-section for the same material. Coded aperture and structured illumination approaches has been shown to greatly improve the collection efficiency. In many applications, especially in security imaging and medical diagnosis, fast and accurate identification of the material composition of a small volume within the whole object would lead to an accelerated imaging procedure and reduced radiation dose. Here, we report an imaging method to reconstruct the material coherent scatter profile within a small volume. The reconstruction along one radial direction can reconstruct a scalar coherent scattering tomographic image. Our methods takes advantage of the finite support of the scattering profile in small angle regime. Our system uses a pencil beam setup without using any detector side collimation. Coherent scatter profile of a 10 mm scattering sample embedded in a 30 mm diameter phantom was reconstructed. The setup has small form factor and is suitable for various portable non-destructive detection applications.

Conference Presentation

Citation Download Citation

Sean Pang and Zheyuan Zhu "Interior tomographic imaging for x-ray coherent scattering (Conference Presentation)", Proc. SPIE 10187, Anomaly Detection and Imaging with X-Rays (ADIX) II, 101870B (7 June 2017); https://doi.org/10.1117/12.2266327

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
PRESENTATION

WATCH
PRESENTATION SAVE TO MY LIBRARY

GET CITATION

KEYWORDS

Scattering

Coherence imaging

Tomography

Laser scattering

X-rays

Collimation

X-ray imaging

Show All Keywords

Keywords/Phrases

Search In:

Publication Years