Patent ID: 8503755
Filing Date: 2013-08-06
Classification: A61B,G06T

Abstract:
1. Method to determine an estimated value of a radiation attenuation coefficient μ j of a voxel j that is associated with a segment of a tissue, wherein the attenuation coefficient μ indicates an attenuation rate of radiation in the tissue, the radiation being emitted with an energy by an emitter and is detected by a detector, the method comprising: in a computerized processor, automatically obtaining an estimate of the noise value Δ{tilde over (μ)} of the voxel attenuation coefficients μ, from a thickness and density of the tissue and information about the emitted radiation; in said processor, automatically estimating an average attenuation coefficient in said processor, automatically calculating parameters of a prior function U(μ) from the estimated noise value Δ{tilde over (μ)} and the average attenuation coefficient in said processor, iteratively calculating the estimated value of the radiation attenuation coefficient μ