Patent ID: 7630528
Filing Date: 2009-12-08
Classification: G06T

Abstract:
1. A method of motion compensation in a projection data set of an object of interest performed in conjunction with an imaging system, the method comprising the steps of: selecting a plurality of gating windows, the plurality of gating windows comprising a first gating window comprising first projection data and a second gating window comprising second projection data; estimating a motion of the object of interest on the basis of the projection data of the first and the second gating windows; performing a motion compensated reconstruction on the basis of the motion estimation; wherein the first and second gating windows at least partially overlap on a time axis, wherein the selection of the first gating window and the second gating window comprises the steps of: selecting a first phase point; determining the first gating window comprising first projection data, wherein the first gating window corresponds to the first phase point; selecting a second phase point on the basis of the first phase point; determining a second gating window comprising second projection data, wherein the second gating window corresponds to the second phase point.