1Balen FG, Allen CM, Lees WR, et al. Review ultrasound contrast agents [J]. Clin Radio, 1994 ; 49 ( 2 ) : 77 -82.
2Takiuchi S, Ito H, Iwakura K, et al. Ultrasonic tissue characterization predicts myocardial viability in early stage of reperfused acute myocardial infarction [J]. Circulation, 1998 ;97 (4) :356-62.
3Suwa M, Ito T, Kobashi A, et al. Myocardial integrated ultrasonic back-scatter in patients with dilated cardiomyopathy:prediction of response to beta-blocker therapy[J]. Am Heart J,2000 ; 139 (5) :905-12.
4Salvetti M, Muiesan ML, Paini A ,et al. Myocardial ultrasound tissue characterization in patients with chronic renal failure[J].J Am Soc Nephrol, 2007 ;18(6) : 1953-8.
5Boon A, Cheliex E, Lodder J, et al. Cardiac valve calcification : characteristics of patients with calcification of the mitral annulus or aortic valve [J]. Heart,1997;78(5) :472-4.