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J Korean Soc Med Ultrasound. 2001 Dec;20(4):267-271. Korean. Original Article.
Choi JC , Oh JY , Lim JU , Nam KJ .
Department of Diagnostic Radiology, Dong-A University, Medical College, Korea.

PURPOSE: To evaluate whether there was any difference in the brightness of echogenicity on gray scale ultrasound imaging between the liver with chronic hepatitis and the normal liver using Adobe photoshop 5.0. MATERIALS and METHODS: Seventy-five patients with pathologically proven chronic hepatitis and twenty normal volunteers were included in this study. Adobe photoshop 5.0 histogram was used to measure the brightness of image. The measured brightness of the liver was divided by the brightness of the kidney, and the ratio was calculated and compared between patients with chronic hepatitis and the normal control groups. In addition, the degree of fibrosis was also evaluated. RESULTS: The difference in brightness between the normal liver and live with chronic hepatitis was statistically significant, but no statistically significant difference was observed between the brightness of the liver and the degree of fibrosis in the liver. CONCLUSION: Tissue echo quantification using Adobe Photoshop 5.0 may be a helpful diagnostic method for the patients with chronic hepatitis.

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