3Quaia E,Degobbis F,Tona G,et a.Differential patterns of contrast enhancement in different focal liver lesions after injection of the microbubble US contrast agent SonoVue.Radiol Med,2004,107:155-165.
4Suzuki Y,Fujimoto Y,Hosoki Y,et al.Clinical utility of sequential imaging of hepatocellular carcinoma by contrast-enhanced power Doppler ultrasonography.Eur J Radiol,2003,48:214-219.
5de Ledinghen V,Laharie D,Lecesne R,et al.Detection of nodules in liver cirrhosis: spiral computed tomography or magnetic resonance imaging?A prospective study of 88 nodules in 34 patients.Eur J Gastroenterol Hepatol,2002,14:159-165.
6Leen E,Angerson WJ,Yarmenitis S,et al.Multi-centre clinical study evaluating the efficacy of SonoVue (BR1),a new ultrasound contrast agent in Doppler investigation of focal hepatic lesions.Eur J Radiol,2002,41:200-206.
7Kim T,Murakami T,Takahashi S,et al.Optimal phases of dynamic CT for detecting hepatocellular carcinoma: evaluation of unenhanced and triple-phase images.Abdom Imag,1999,24:473-480.
8Yucel C,Ozdemir H,Gurel S,et al.Detection and differential diagnosis of hepatic masses using pulse inversion harmonic imaging during the liver-specific late phase of contrast enhancement with Levovist.J Clin Ultrasound,2002,30:203-212.
9Matsui O,Kadoya M,Kameyama T,et al.Benign and malignant nodules in cirrhotic livers:distinction based on blood supply.Radiology,1991,178:493-497.
10Dalla-Palma L,Bertolotto M,Quaia E,et al.Detection of liver metastases with pulse inversion harmonic imaging: preliminary results.Eur Radiol,1999,9 （Suppl 3）:S382-387.?A?A
