Detekce a charakterizace ložiskových lézí jater hepatocytárního původu pomocí magnetické rezonance s použitím hepatospecifické kontrastní látky Gd-EOB-DTPA

• Main Author: Mrklovský, Milan
• Other Authors: Žižka, Jan
• Format: Doctoral Thesis
• Language: Czech
• Published: 2012
• Online Access: http://www.nusl.cz/ntk/nusl-311799

Detection and characterization of hepatocellular liver lesions by using MRI with hepatospecific contrast agent Gd-EOB-DTPA Aim: To prospectively compare contrast properties of extracelullar (gadobutrol) and hepatospecific (gadoxetic acid) contrast agents in upper abdominal MRI studies. To prospectively evaluate the possibilities of detection and characterization of hepatocellular liver lesions by means of MRI using hepatospecific contrast agent Gd-EOB-DTPA. Materials and methods: Standardized (0,1 ml/kg) dose of gadobutrol (56 subjects) and gadoxetic acid (51 subjects) was administered intravenously by MRI-compatible injector at 2 ml/s, followed by 20 ml saline flush. MR signal intensity changes (SIC) between precontrast scans and arterial phase, portal venous phase, equilibrium, and delayed scans at 10 and 20 minutes were measured in abdominal aorta, portal vein, common bile duct, liver, and spleen. Mean SIC values for gadobutrol and gadoxetic acid were compared by a two-sample t-test with p-value < 0,05 considered significant. A total of 78 subjects with known arterial hypervascularized liver lesion (other than haemangioma) were examined on MRI with administration of liver specific contrast agent Gd-EOB-DTPA. All studies were performed before and after contrast agent injection in arterial, portal...