Performance of image intensifier-equipped X-ray systems for three-dimensional imaging

摘要: Abstract The performance of image intensifier (II)-equipped C-arm systems for three-dimensional (3D) imaging was investigated. quality evaluated in terms spatial resolution (modulation transfer function, MTF), contrast resolution, geometrical accuracy and homogeneity depending on the format, focal spot size, number projections angular span covered during data acquisition. Experiments have been performed a vascular system equipped with 38-cm intensifier. Several objects, including CT performance, MTF pelvis phantoms, were scanned under various conditions. It shown that reasonable acquisition parameters, below 100 HU could be obtained standard strategies. Focusing an almost isotropic up to 22 lp/cm at 10% modulation when 17-cm II used. resulting images limited by remaining scatter truncations. order voxel size.