Fig. 3

Conventional imaging and dMRI variable colour maps of patients with CSM occurring at C5–C6 and matched volunteers. a The volunteers and b the matched CSM patients. Rows 1–3 of the right picture represent the colour maps of different DTI, DKI, and NODDI variables, respectively. The colour maps of the variable are manually adjusted to show the clearest image contrast. In a, the FA value is 0.0955, the MD value is 0.0001, the AD value is 0.0003, the RD value is 0.0002, the MK value is 0.2163, the AK value is 0.0753, the RK value is 0.4833, the ISOVF value is 0.1388, and the ODI value is 0.0129. The NDI value is 0.1306 and the AWF value is 0.0525; in b, the FA value is 0.0892, the MD value is 0.0001, the AD value is 0.0002, the RD value is 0.0002, the MK value is 0.2155, the AK value is 0.0701, and the RK value is 0.0721. The ISOVF value is 0.1616, the ODI value is 0.0722, the NDI value is 0.1211, and the AWF value is 0.01012