基于bp神经网络的肝纤维化无创性诊断模型研究

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1、目录中文摘要.....................................................................1英文摘要.....................................................................3引言............................................................................5正文.................................................................

2、...........61资料与方法....................................................................61.1一般资料.....................................................................61.2诊断标准.....................................................................61.2.1慢性乙型肝炎西医诊断标准......................................

3、......61.2.2慢性乙型肝炎的中医辨证分型诊断标准..............................61.2.3慢性乙型肝炎的病理学诊断标准.......................................61.3病例纳入和排除标准.......................................................71.3.1纳入标准...................................................................71.3.2排除标准.......................

4、............................................71.4临床资料收集................................................................81.4.1观察项目...................................................................81.4.2实验室指标................................................................81.5肝穿刺组织病理学检测方法..........

5、....................................81.6统计学处理..................................................................91.7神经网络诊断模型的建立.................................................91.8模型的验证.................................................................102结果..........................................

6、.................................102.1各项临床指标与肝纤维化分期的相关性分析结果....................102.2肝纤维化BP神经网络诊断模型诊断结果..............................102.2.1有效指标筛选结果.......................................................132.2.2神经网络模型的建立与应用...........................................1312.2.3检验模型的实际预测效果.............

7、.................................152.2.4ANN模型预测能力与实际情况比较ROC曲线....................152.2.5影响因素的敏感度分析.................................................163讨论........................................................................