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METHOD FOR MOTION CORRECTION OF A RECONSTRUCTED THREE-DIMENSIONAL IMAGE DATASET, BIPLAN X-RAY DEVICE, COMPUTER PROGRAM AND ELECTRONICALLY READABLE DATA CARRIER
METHOD FOR MOTION CORRECTION OF A RECONSTRUCTED THREE-DIMENSIONAL IMAGE DATASET, BIPLAN X-RAY DEVICE, COMPUTER PROGRAM AND ELECTRONICALLY READABLE DATA CARRIER
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机译:重建的三维图像数据集,Biplan X射线设备,计算机程序和电子可读数据载体的运动校正方法
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摘要
Motion correction of a three-dimensional (3D) image dataset reconstructed from a plurality of two-dimensional (2D) projection images acquired by an X-ray device is provided. In order to acquire the projection images, each of two acquisition assemblies covers an angular range of projection angles, and pairs of projection images of a region under examination are acquired at least substantially simultaneously at each acquisition time instant. For each pair of projection images, at least one marker object lying in the region under examination is automatically localized in order to determine 2D location information. 3D position information about the marker object is determined using acquisition geometries of the respective pair of projection images. Motion information describing a motion profile of the marker object over the acquisition period is ascertained from the position information at different acquisition time instants, and the motion information is used for motion correction of the image dataset.
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