Quantitative evaluation of CT Images by means of Shannon Entropy

摘要

We perform a quantitative evaluation of CT Images using Shannons Entropy (SE). The study based on a large set of simulated CT data, which were produced using a deterministic simulation tool. The data evaluation is done in two steps, first the SE is calculated directly from the voxelized data and second the SE is calculated from the partial derivative of the volumes. Comparing the two SE values leads to a clear mapping of the acquisition parameter space used in the simulation. Additionally, we compare SE and signal to noise ratio (SNR) for the same dataset.