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Spatial resolution testing of microCT

Jan 26, 2017

Numerous methods to assess the performance of microCT systems have been proposed over the years. Typically, the limiting factor at high resolution are the focal spot dimensions. This is why many tests rely on determining the spot size from 2D projection images only. The true spatial resolution in 3D however depends on many more factors, not in the least the mechanical accuracy of the system. The required temporal stability makes for a much more demanding situation than for relatively short duration 2D tests. Finally, the processing and reconstruction algorithms also have a significant influence on the achievable spatial resolution in 3D.

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