Lens gratings for dose optimization of medical X-ray phase contrast imaging

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Preusche O
Zeitschrift: Optics Express
Jahr der Veröffentlichung: 2016
Band: 24
Heftnummer: 23
Seitenbereich: 26161-26174
ISSN: 1094-4087
Sprache: Englisch


Abstract

A novel way to build arrays of X-ray lenslets is proposed for use in medical imaging, in particular for X-ray phase contrast imaging. Focusing on Talbot-Lau interferometers, this work is about patient dose reduction, especially for design energies above 50 keV. 

A low dose poses a fabrication problem, because it requires an analyzer grating which is both fine and high: It has to be fine for a good angular sensitivity. It has to be high to absorb well. However, gratings can currently be built either fine or high. 

The proposed solution is to use a fine novel lens grating in front of a high analyzer grating: The lens grating uses lenslets to combine fine fringes into wider strips. This coarser pattern is then analyzed by a high grating. Regular binary production processes are sufficient to build lens gratings. Simulation-based results show that lens gratings can save dose with no impact on reconstructed images.


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Preusche, Oliver
Professur für Informatik (Numerische Simulation mit Höchstleistungsrechnern)


Zitierweisen

APA:
Preusche, O. (2016). Lens gratings for dose optimization of medical X-ray phase contrast imaging. Optics Express, 24(23), 26161-26174. https://dx.doi.org/10.1364/OE.24.026161

MLA:
Preusche, Oliver. "Lens gratings for dose optimization of medical X-ray phase contrast imaging." Optics Express 24.23 (2016): 26161-26174.

BibTeX: 

Zuletzt aktualisiert 2018-18-10 um 12:40