Construction and evaluation of a high-energy grating-based x-ray phase-contrast imaging setup

Christian Hauke; Florian Horn; Georg Pelzer; Jens Rieger; Sebastian Lachner; Veronika Ludwig; Maria Seifert; Max Schuster; Johannes Wandner; Andreas Wolf; Thomas Weber; Thilo Michel; Gisela Anton

doi:10.1117/12.2216879

31 March 2016 Construction and evaluation of a high-energy grating-based x-ray phase-contrast imaging setup

Christian Hauke, Florian Horn, Georg Pelzer, Jens Rieger, Sebastian Lachner, Veronika Ludwig, Maria Seifert, Max Schuster, Johannes Wandner, Andreas Wolf, Thomas Weber, Thilo Michel, Gisela Anton

Author Affiliations +

Proceedings Volume 9783, Medical Imaging 2016: Physics of Medical Imaging; 97835F (2016) https://doi.org/10.1117/12.2216879
Event: SPIE Medical Imaging, 2016, San Diego, California, United States

Abstract

Interferometric x-ray imaging becomes more and more attractive for applications such as medical imaging or non-destructive testing, because it provides the opportunity to obtain additional information on the internal structure of radiographed objects.¹² Therefore, three types of images are acquired: An attenuation image like in conventional x-ray imaging, an image of the differential phase-shift generated by the object and the so called dark-field image, which contains information about the object’s granularity even on sub-pixel scale.³ However, most experiments addressing grating-based x-ray phase-contrast imaging with polychromatic sources are restricted to energies up to about 40 keV. For the application of this imaging method to thicker objects like human specimens or dense components, higher tube voltages are required. This is why we designed and constructed a laboratory setup for high energies, which is able to image larger objects.⁴ To evaluate the performance of the setup, the mean visibility of the field of view was measured for several tube voltages. The result shows that the mean visibility has a peak value of 23% at a tube voltage of 60 kV and is constantly greater than 16% up to a tube voltage of 120 kV. Thus, good image quality is provided even for high energies. To further substantiate the performance of the setup at high energies, a human ex-vivo foot was examined at a tube voltage of 75 kV. The interferometric x-ray images show a good image quality and a promising diagnostic power.

Citation Download Citation

Christian Hauke, Florian Horn, Georg Pelzer, Jens Rieger, Sebastian Lachner, Veronika Ludwig, Maria Seifert, Max Schuster, Johannes Wandner, Andreas Wolf, Thomas Weber, Thilo Michel, and Gisela Anton "Construction and evaluation of a high-energy grating-based x-ray phase-contrast imaging setup", Proc. SPIE 9783, Medical Imaging 2016: Physics of Medical Imaging, 97835F (31 March 2016); https://doi.org/10.1117/12.2216879

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
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Visibility

X-ray imaging

X-rays

Image quality

Interferometry

Sensors

Signal attenuation

Show All Keywords

Keywords/Phrases

Search In:

Publication Years