纹理多参数分析在帕金森病患者脑磁化率定量中的应用研究

赵欣欣, 裴孟超

Study on multi-parametric texture analysis for quantifying brain magnetic susceptibility in patients with Parkinson′s disease

ZHAO Xinxin, PEI Mengchao

图1 灰质核团感兴趣区定义示意图以及灰度游程矩阵的图示 Note： A. Regions of interest were manually drawn on transverse quantitative susceptibility images. B. Illustration of the process for generating gray-level run-length matrices, considering a 4×4 image represented with four gray-scale values ranging from 0 to 3. A single neighboring pixel (d=1) was considered along four possible directions—0°, 45°, 90°, and 135°—with in the same slice, and 0° in the Z-direction between slices.

Fig 1 Schematic representation of the definition of regions of interest in gray matter nuclei and an illustration of the generation of gray-level run-length matrices