Patent ID: 8090182
Filing Date: 2012-01-03
Classification: A61B,G06T

Abstract:
1. An image reconstructing device for obtaining a cross-sectional image of an object from projections (hereinafter referred to as “radiographic projections”) obtained by irradiating the object with a beam of radiation, comprising: means (a) for obtaining an evaluation function (hereinafter referred to as an “energy”) (E means (b) for modifying a portion of the current estimated cross-sectional image; means (c) for obtaining an energy (E means (d) for obtaining a differential (ΔE) between the energy (E means (e) for determining whether or not the modification is to be accepted, based on an acceptance function using the differential (ΔE) and a temperature parameter (T) for controlling an acceptance probability, and reflecting a result of the determination on the current estimated cross-sectional image; and means (f) for changing a value of the temperature parameter (T) every time the number of iterations of a series of processes of the means (a) to (e) reaches a predetermined value.