Patent Document ID: 20060182322
Application ID: 11058025
Patent Status: 0

Claim One:
1. A method for quantifying image quality of an x-ray based medical projection imaging system, comprising the steps of: directing a beam of x-ray energy to a detector to produce an image; performing a deterministic calculation of an average probability of primary x-ray quanta with an energy spectrum defined by a tube setup as registered in an active layer of the detector; blurring the image in a frequency domain to produce a blurred image; performing a Fourier transform of the blurred image to produce a transformed blurred image; performing a stochastic simulation based on Monte Carlo track structure calculations for emitted x-ray quanta to determine energy deposition distribution during imaging; performing an analytical calculation as a linear cascaded model to determine influence of physical processes in the detector; calculating the spatial frequency dependent signal to noise ratio using output of said Fourier transform and said stochastic simulation and said analytical calculation according to the following: SNR ⁡ ( u , v ) =  H ⁡ ( v , v )  NPS ⁡ ( u , v ) .