科研之友
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PurposeTo assess the feasibility of axial T-2, T2*, and T-1 mapping of lumbar facet joint (LFJ) cartilage for evaluation of early degeneration. @@@ Materials and MethodsWe examined a total of 176 LFJs from 21 volunteers using axial T-2, T2*, and T-1 mapping with a 3.0T magnetic resonance imaging (MRI) scanner. All LFJs were measured and grouped according to the presence of low back pain (LBP), the Weishaupt grading system, and the Pfirrmann grade of the adjacent intervertebral disk (IVD). T-2, T2*, and T-1 values were analyzed and compared among the different groups. @@@ ResultsLow interobserver agreement was found in the Weishaupt grading of LFJs (=0.161). The T-1 values of LFJs were significantly different between adjacent two Pfirrmann grade of disks (grade I 50.153.63 msec / grade II 53.273.80 msec, P=0.002; grade II 53.273.80 msec / grade III 58.404.17 msec, P<0.01), and in different Weishaupt grades of LFJs (P=0.000). T2* values were only found significantly different between Pfirrmann grade I and III of disks (P=0.048). There was no significant difference in T-2 values of LFJs whatever in Pfirrmann (P=0.556) or Weishaupt grades (P=0.694). No significant difference was found in T-2, T2*, and T-1 values between volunteers with LBP and without LBP (P-T2=0.783, PT2*=0.311, P-T1=0.259). @@@ ConclusionAxial T-1 could be an effective and sensitive method to assess for early degenerative changes in LFJ cartilage. Level of Evidence: 1 Technical Efficacy: Stage 2 J. MAGN. RESON. IMAGING 2017;46:468-475
- 出版日期2017-8
- 单位中南大学
