中国医疗设备2016，Vol.31Issue(8)：21-25,5.DOI:10.3969/j.issn.1674-1633.2016.08.005
基于纹理特征的肝硬化MRI分期
Application of MRI in Cirrhosis Staging Based on Texture Features
摘要
Abstract
Computer aided diagnosis by means of MRI (Magnetic Resonance Imaging) has been gradually used in staging of cirrhosis. In this paper, MRI is applied in staging of cirrhosis based on MR8 iflter banks. A staging system that applies to ifve sequences of liver MRI, including T1-weighted, T2-weighted, arterial phase, portal venous phase and equilibrium phase, is structured to improve staging accuracy. A signiifcant advantage of MR8 iflter banks is the rotation invariance. Therefore, MR8 iflter banks are used to extract texture features and to construct statistical histogram of texton. The statistical histograms are then used to separate the MRI sequences into three stages:normal, early stage and the middle and advanced stage. The experimental results show that the method employed in this paper has an excellent performance of accuracy compared with the classic GLCM (Gray Level Co-occurrence Matrix) method. Especially in T2-weighted sequence and equilibrium phase sequence, the ROI in three stages of both sequences appears a 100% accuracy. On this basis, the ROI results of the five sequences are integrated into the ifnal case accuracy results, which is also 100%.关键词
MR8滤波器组/肝硬化MRI/纹理基元统计直方图/灰度共生矩阵Key words
MR8 iflter bank/cirrhosis MRI/statistical histogram of texton/gray level co-occurrence matrix分类
医药卫生引用本文复制引用
窦乐昕,刘惠..基于纹理特征的肝硬化MRI分期[J].中国医疗设备,2016,31(8):21-25,5.基金项目
国家自然科学基金(61003175和81071127)；中央高校基本科研专项基金；山东省自然科学基金(ZR2014FM001)；山东省泰山学者计划（TSHW201502038）。 （61003175和81071127）
