An optimization procedure for spatial and density resolution in hard X-ray micro-computed tomography

Thurner, Philipp J., Beckmann, Felix and Müller, Bert (2004) An optimization procedure for spatial and density resolution in hard X-ray micro-computed tomography. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 225 (4), 599-603. (doi:10.1016/j.nimb.2004.05.027).

Record type: Article

Abstract

The quality of the X-ray tomogram not only depends on the spatial resolution but also on the density resolution or contrast. Based on the theory of [Nucl. Instr. and Meth. 206 (1983) 541] it is concluded that the density resolution can be substantially improved by merging of pixels, referred to as binning, prior to reconstruction. We demonstrate that the quality of a given 3D-data set, i.e. the tomogram of stained biological cells seeded on a polymer multifilament yarn in phosphate buffered saline, can be optimized with respect to the product of spatial and density resolution – the image quality factor. This procedure improves or even enables the visualization and quantification of selected constituents in the tomogram.

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