1Hosten N, Pule R, Lemke A J, et al. Contrast-enhanced power Doppler sonography; improved detection of characteristic flow patterns in focal liver lesions[J]. J Clin Ultrasound , 1999 , 27:107.
2Numata K, Tanaka K, Kilu T, et al. Contrast-enhanced, wideband harmonic gray-scale imaging of hepatocelliular carcinoma:correlation with helical computed tomographic findings [J]. J Ultrasound Med, 2001,20(2) :89.
3Strobel D, Krodel U, Martus P, et al. Clinical evaluation of contrast-enhanced color Doppler sonogroaphy in the differential diagnosis of liver tumors[J]. J Clin Ultrasound, 2000,28:1.
4Solbiati L, Tonolini M, Cova L, et al. The role of contrastenhanced ultrasound in the detection of focal liver leasion[J].Eur Radiology, 2001, 11(3): E15.
5Nicolau C, Catalá V, Brú C. Characterization of focal liver lesions with contrast-enhanced ultrasound [J]. Eur Radiol, 2003, 13:N70.
6Strobel D , Krudel U, Martus P , et al. Clinical eveluation of contrast-enhanced color Doppler sonography in the differential diagnosis of liver tumors[J]. J Clin Ultrasound, 2000, 26:1.
7Beissert M, Delorme S, Mutze S, et al. Comparison of B-mode and conventional colour/power Doppler ultrasound, contrastenhanced Doppler ultrasound and spiral the diagnosis of focal lesions of the liver: Results of a multicentre study [J]. J Ultraschall Med, 2002, 23(4): 245.
8Hollet MD,Brooke JR,Nino-Murcia M,et al.Dual-phase CT of the liver:value of arterial phase scans in the detection of small(≤1.5 cm) malignant neoplasms.AJR,1995,164:879-884
9Sadek AG,Mitchel DG,Siegelman ES,et al.Early hepatocellular carcinoma that develops within macroregenerative nodules growth rate depicted at serial MR imaging.Radiology,1995,195:753-756
