基金国家自然科学基金( the National Natural Science Foundation of China under Grant No60672098) 重庆市科技公关计划( the KeyTechnologies R&D Program of Chongqing City China under Grant NoCSTC2006AB3027)
基金supported in part by the grants from NNSFC 10905030Beijing Natural Science Foundation (Research on key techniques of medical conebeam CT reconstruction from little data based on com-pressed sensing theory)~~