Assesment of the focal liver lesions with two- dimensional and three-dimensional color doppler ultrasonography, power doppler ultrasonography and dynamic flow imaging

2. ABSTRACTASSESMENT OF THE FOCAL LIVER LESIONS WITH TWO- DIMENSIONALAND THREE-DIMENSIONAL COLOR DOPPLER ULTRASONOGRAPHY,POWER DOPPLER ULTRASONOGRAPHY AND DYNAMIC FLOW IMAGINGIn this study, vascular pattern of focal liver lesions (FCL) were evaluated bytwo- dimensional (2D) and three-dimensional (3D) color Doppler ultrasonography(CDUS), power Doppler ultrasonography (PDUS) and Dynamic flow imaging (DFI).Between January 2004-January 2005, 33 female and 29 male patients (total62) patients between ages of 16-78 years (mean 58.2±14.1 years) were included in tothe study. 14 benign (22.6%) and 48 malignant (%77.6) lesions were diagnosed bypathologic examination or typical radiological findings. In benign lesions, 12 lesions(85.7%) were hemangiomas, 1 (7.15%) lipoma and 1 (7.15%) inflammatorypseudotumor. In malign lesions, 33 lesions (68.7%) were hepatocellular carcinomaand 15 (31.3%) metastases.B-mode, CDUS, PDUS and DFI examinations were performed by ToshibaSSA 770A/80 Aplio device (Tokyo-Japan) using 2-5 MHz multifrequency wide-bandconvex shaped transducer. All patients were examined with 2D and 3D CDUS,PDUS and DFI. The vascular pattern on Doppler sonography was classified intothree types: avascular (Type I), peripheral vascular (Type II), and intratumoralvascular (Type III).All kind of Doppler imaging study were made 51 of 62 patients. The samevascular pattern were found in 38 (74.5 %) of 51 lesions (n= 20 type II, n=17 typeIII, n=2 type I). Significant differences were found in between 2D CDUS and 3DPDUS (p=0.005), 2D PDUS and 3D PDUS (p=0.003), 2D DFI and 3D DFI(p=0,001).33D Doppler imaging is better than 2D Doppler techniques for detectingintratumoral flow. There was no significant difference in between 3D DFI and other3D Doppler modalities. But visually, 3D DFI more clearly depicted intratumoralvascularity than the other Doppler modalities.Key words: Three-Dimensional Doppler, Focal Liver Lesions, Power Doppler,Dynamic Flow.4