Based on the development of digital neutron imaging system, the restoration algorithm was presented to remedy the geometric unsharpness of digital neutron radiation images. 以中子数字成像系统的开发为背景,提出一种用于中子数字图像几何不锐度校正的图像复原算法。
THE MEASUREMENT OF TIME Measurement of Unsharpness 不清晰度的测量
Results The early CT findings of MCA infaction include hyperdense MCA sign ( HMCAS), dot sign and the appearance of ischemic infarction of the region supplied by MCA in the early stage, which include lenticula edge unsharpness and low density; 结果大脑中动脉供血区脑梗死超急性期CT表现为MCA高密度征、点状征及MCA供血区早期缺血梗死的表现:如豆状核边缘模糊,密度减低;