A quantitative analysis system for myocardial contrast echocardiography based on eliminating particle swarm optimization clustering algorithm
Du Guo-qing, Tian Jia-wei, Guo Yan-hui, Su Yang, Zhang Meng
Chinese Journal of Tissue Engineering Research . 2010, (43): 8065 -8068 .  DOI: 10.3969/j.issn.1673-8225.2010.43.022