7Itoh A, Ueao E,Tobao E, et al. Comparison between ultrasonic elas- togram and histologic findings in breast diseases [ C ]. Seventh Con- gress of Asian Federation of Societies for Ultrasound in Medicine and Biology ( AFSUMB 2004 ), 2004 : 330.
8Chiadoni L, Tadde S, Virdis A. Endojthelial function and common carotid artery wall thickening in patients with essential hypertension [ J ]. Hypertension, 1998,32 ( 1 ) :25 - 29.
9Ophir J, Cespedes I, Ponnekanti H, et al. Elastography : a quantita- tive method for imaging the elasticity of biological tissues [ J ]. Ultra- son Imaging,1991,13(2) :111 - 134.
10Katakami N,Kaneto H,Matsuhisa M,et al.Clustering of several cardio. vascular risk factors afects tissue characteristics of the carotid artery. Atherosclerasis, 2008,198( 1 ) :208-213.