Amir Zekavat, Grammatiki Lioliou, Oriol Roche I Morgo, Charlotte Maughan Jones, Gabriel Galea, Eirini Maniou, Adam Doherty, Marco Endrizzi, Alberto Astolfo, Alessandro Olivo, Charlotte Klara Hagen
To report on a micro computed tomography (micro-CT) system capable of x-ray phase contrast imaging and of increasing spatial resolution at constant magnification. 

Approach: The micro-CT system implements the edge illumination (EI) method, which relies on two absorbing masks with periodically spaced transmitting apertures in the beam path; these split the beam into an array of beamlets and provide sensitivity to the beamlets' directionality, i.e., refraction. In EI, spatial resolution depends on the width of the beamlets rather than on the source/detector point spread function (PSF), meaning that resolution can be increased by decreasing the mask apertures, without changing the source/detector PSF or the magnification...
April 17, 2024: Physics in Medicine and Biology