6GRAMIAK R, SHAH P M. Echocardiography of the aortic root [J]. Invest Radiol, 1968, 3(5) : 356 -366. 被引量：1
7FEINSTEIN S B, TEN CATE F J, ZWEHL W, et al. Two- dimensional contrast echocardiography. 1. In vitro development and quantitative analysis of echo contrast agents[J]. J Am Coll Cardiol, 1984, 3(1): 14-20. 被引量：1
8FORSBERG F, LIU J B, CHIOU H J, et al. Comparison of fundamental and wideband harmonic contrast imaging of liver tumors [ J ]. Ultrasonics, 2000, 38 ( 1 - 8 ) : 110 - 113. 被引量：1
9PORTER T R, XIE F, KRICSFELD D, et al. Improved myocardial contrast with second harmonic transient ultrasound response imaging in humans using intravenous perfluorocarbon - exposed sonicated dextrose albumin[ J]. J Am Coll Cardiol, 1996, 27 (6): 1 497 -1 501. 被引量：1
10SCHUTT E G, KLEIN D H, MATTREY R M, et al. Injectable microbubbles as contrast agents for diagnostic ultrasound imaging: the key role of perfluorochemicals[ J]. Angew Chem Int Ed Engl, 2003, 42(28) : 3 218 -3 235. 被引量：1
