期刊
APPLIED RADIATION AND ISOTOPES
卷 94, 期 -, 页码 230-234出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2014.08.014
关键词
X-ray imaging; Micro-CT; Spatial resolution; MTF; V vertical bar tome vertical bar x s; General electric
类别
资金
- DFG Cluster of Excellence Munich-Centre for Advanced Photonics (MAP) [DFG EXC-158]
- DFG Gottfried Wilhelm Leibniz program
- European Research Council (ERC, FP7) [StG 240142]
We report on an experimental characterization of the spatial resolution of a commercial X-ray micro-computed tomography scanner. We have measured the full modulation transfer function (MTF) to assess the spatial resolution. The MTF and those spatial frequencies corresponding to a contrast loss of 50% were determined as a function of different applied X-ray tube parameters and magnification-dependent pixel sizes. A significant influence of the focal spot enlargement on the achievable spatial resolution could be shown. Our results allow for the designation of optimal X-ray tube parameters for a specific application requirement. (C) 2014 The Authors. Published by Elsevier Ltd.
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