Impact of multi-b-value on texture features of DWI in liver cirrhosis
10.13929/j.1003-3289.201709043
- VernacularTitle:多b值对肝硬化DWI纹理特征提取的影响
- Author:
Jing ZHANG
1
;
Qingtao QIU
;
Jinghao DUAN
;
Qingjun JIANG
;
Gang SUN
;
Guanzhong GONG
;
Dengwang LI
;
Yong YIN
Author Information
1. 山东师范大学物理与电子科学学院
- Keywords:
Liver cirrhosis;
Magnetic resonance imaging;
Diffusion weighted imaging;
Texture feature
- From:
Chinese Journal of Medical Imaging Technology
2018;34(4):610-615
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the impact of multi-b-value on texture features of DWI in liver cirrhosis.Methods DWI manifestations of liver cirrhosis in 37 patients were analyzed retrospectively,and DWI of 27 healthy volunteers (control group) were enrolled as controls.The b values were set as 0,20,50,100,200,400,800,1 000,1 200 and 1500 s/mm2,respectively.Three ROIs at different levels of every set image were selected,and 37 texture features within these ROIs were extracted.Unstable texture features affected by different b-values were screened with the percent coefficient of variation (％COV),and the fitting degree between the unstable texture features and b values were analyzed with exponential fitting.Results Among 37 texture features,20 (20/37,54.05 ％) were unstable.With the increase of b values,exponential upward trend was found in 10 texture features,exponential downward trend was found in 4 texture features,and the relative trends could not be defined in other 6 unstable texture features.Conclusion The b values of DWI impact the texture features in liver cirrhosis.Correlations exist among some texture features and b values.
