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由于成象和计算机技术的发展,由投影图象重建目标的截面构造,已成为工程物理、医疗诊断技术中十分重要的课题.将投影图象看作是投影光线经过目标透射衰减的线积分函数,Radon等做过早期的数学工作,即称为Radon积分变换.而这一方法的实际研究和应用,则起始于20年前的计算机层析X射线扫描技术(即CT技术)的发明.它通过全方位上获得的投影图象来重建目标的截面构造.在近20多年中,CT技术在人体组织成象,核医学技术中得到了十分重要的应用.另一方面,波与目标的相互作用以及目标的结构重建,一直是
Due to the development of imaging and computer technology, the cross-section structure of the reconstruction target from projection images has become a very important issue in engineering physics and medical diagnosis technology.It is considered that the projection image is a linear integral function of the projection transmission light through the target transmission attenuation , Radon and other early mathematics work, known as Radon integral transformation.The actual research and application of this method began in 20 years ago, the computer tomography (CT technology) invention. It reconstructs the cross-sectional structure of the target through the projection images obtained in all aspects.For more than 20 years, CT technology has been very important in human tissue imaging and nuclear medicine technology.On the other hand, wave and target Interaction and the restructuring of the target have always been