1Department of Radiology, Institute of Radiation Medicine, Seoul National University College of Medicine. 2Department of Radiology, Institute of Biomedical Engineering, Seoul National University College of Medicine.
Published online: January 1, 2001.
ABSTRACT
PURPOSE: To evaluate the contrast between hepatic vein and hepatic parenchyma with controlled velocities of ultra-sound in normal and fatty liver. MATERIALS AND METHODS: 31 patients with normal liver and 39 patients with moderate degree of fatty liver were s-tudies with sonography with controlled velocities of ultrasound (1,580 m/sec, 1,540 m/sec, 1,500 m/sec, 1,460 m/sec). Sonographic images were captured with picture grabbing(Sono-PACS) and were recalled with vi-sual C++(Microsoft Redmond. WA, USA). The contrast between hepatic vein and parenchyma was measured and analyzed on each sonographic image. RESULTS: The number of patients with the highest contrast between hepatic vein and hepatic parenchyma among the 31 patients with normal liver were 5(16.1%) with 1,580m/sec, 12(38.8%) with 1,540m/sec, 9(29.0%) with 1,500m/sec, and 5(16.1%) with 1,460m/sec. The number of patients with the highest contrast between hepatic vein and hepatic parenchyma among the 39 patients with fatty liver were 3(7.7%) with 1,580m/sec, 7(17.9%) with 1,540m/sec, 12(30.8%) with 1,500m/sec and 17(43.6%) with 1,460m/sec. CONCLUSION: The velocity of ultrasound for the highest contrast between hepatic vein and hepatic parenchyma in normal liver was 1,540 m/sec, and 1,460 m/sec in fatty liver.
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