Sub pixel resolution using spectral-spatial encoding in x-ray imaging.

ABSTRACT:

Purpose

Previous efforts at increasing spatial resolution have relied on decreasing focal spot and or detector element size. Many "super resolution" methods require physical movement of a component of the imaging system. This work describes a method for achieving spatial resolution on a scale smaller than the detector pixel without motion of the object or detector.

Methods

We introduce a weighting of the photon energy spectrum on a length scale smaller than a single pixel using a physical filter that can be placed between the focal spot and the object, between the object and the detector, or integrated into the x-ray source or detector. We refer to the method as sub pixel encoding (SPE). We show that if one acquires multiple measurements (i.e. x-ray projections), information

SUBMITTER: Szczykutowicz TP 

PROVIDER: S-EPMC8550400 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature