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Evaluation of lumbar facet joint and intervertebral disc degeneration using histogram analysis of T2 and T2*values
Xiaoqing Liang1, Weiyin Vivian Liu2, and Xiaoming Li1
1Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China, 2MR Research,GE Healthcare, Beijing, China
LFJ degeneration occurs earlier and progresses more slowly than IVD degeneration. Histogram analysis of T2 and T2* values is feasible for detecting IVD but not LFJ degeneration. 
Figure 2. ROC analysis of T2 and T2* histogram parameters for identifying normal (Pfirrmann grades Ⅰ and Ⅱ) and abnormal (grades Ⅲ to Ⅴ) discs.
Figure 1. Degeneration incidence of lumbar facet joint (LFJ) and intervertebral disc (IVD) in different age groups. * P < 0.05, **P < 0.01, ***P < 0.001.