Sampling variability of computer-aided fractal-corrected measures of liver fibrosis in needle biopsy specimens
Sampling variability of computer-aided fractal-corrected measures of liver fibrosis in needle biopsy specimens作者机构：Laboralori di Medicina Quanlitativa Islituto Clinico Humanitas IRCCS Rozzano Milan Italy Department of Pathology Istituto ClinicoHumanitas IRCCS Rozzano Milan Italy Laboratory of Clinical Research in Oncology Mario Negri Institute of Pharmacological Research Milan Italy Clinical Research Office Istituto ClinicoHumanitas IRCCS Rozzano Milan Italy Department of General Surgery and Transplantation Ospedale Maggiore IRCCS Milan Italy
出 版 物：《World Journal of Gastroenterology》 (世界胃肠病学杂志（英文版）)
年 卷 期：2006年第12卷第47期
页 面：7660-7665页
核心收录：
学科分类：1002[医学-临床医学] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 10[医学]
基 金：Supported by "Michele Rodriguez" Foundation Institute forQuantitative Measures in Medicine Milan Italy
主 题：Cirrhosis Hepatitis C virus Inter-sample variability Extra-cellular matrix Image analysis
摘 要：AIM： TO assess the sampling variability of computeraided, fractal-corrected measures of fibrosis in liver biopsies. METHODS： Samples were derived from six to eight different parts of livers removed from 12 patients with clinically and histologically proven cirrhosis undergoing orthotopic liver transplantation. Sirius red-stained sections with a thickness of 2 μm were digitized using a computer-aided image analysis system that automatically measures the surface of fibrosis, as well as its outline perimeter, fractal surface and outline dimensions, wrinldedness, and Hurst coefficient. RESULTS： We found a high degree of inter-sample variability in the measurements of the surface [coefficient of variation （CV） = 43% ± 13%] and wrinkledness （CV = 28% ± 9%） of fibrosis, but the inter-sample variability of Hurst＇s exponent was low （CV = 14% ± 2%）. CONCLUSION： This study suggests that Hurst＇s exponent might be used in clinical practice as the best histological estimate of fibrosis in the whole organ, and evidences the fact that biopsy sections, which are fundamental for the qualitative diagnosis of chronic hepatitis, play a key role in the quantitative estimate of architectural changes in liver tissue.
维普期刊数据库