Head and Neck Imaging
MR T2-mapping of Intervertebral Disk after Internal Fixation Surgery of Lumbar Spine:A Feasibility and Reproducibility Study*
Author：HUANG Yao-qu, ZHAO Xiao-mei, WU Qiong-hui et al.
affiliation：Room of MRI, Foshan Hospital of Traditional Chinese Medicine, Foshan 528000, Guangdong, China
PDFAbstract
Objective To explore the feasibility and reproducibility of MR T2- mapping technique in evaluating intervertebral disk degeneration of adjacent segment after internal fixation surgery. Methods Within 1 week preoperatively and 6 to 8 weeks postoperatively,24 patients were underwent T2-mapping examination. The T2 value of nucleus pulposus was measured by two senior MRI radiologists. To assess the reproducibility of this evaluation, inter-and intra-observer statistics were performed. Results The T2 values of 24 patients were measured successfully. The preand postoperative T2 values of the adjacent proximate disks were 93.2±22.3ms and 95.5±20.1ms respectively (t=-1.00,P＞0.05),and the pre- and postoperative T2 values of the adjacent distal disks were 87.9±27.7ms and 83.7±23.0ms(t=1.77,P＞0.05). The inter- and intra-observer analysis yielded intraclass correlation coefficients (ICC) for measures in a range from 0.85 to 0.94(P＜0.01). Conclusion MR T2-mapping examination after internal fixation surgery is feasible, it will be a potential quantitative method in evaluating intervertebral disk degeneration of adjacent segment for its excellent reproducibility.
【Keyword】Intervertebral Disk Degeneration; T2 Relaxation Time; Internal Fixation; Magnetic Resonance Imaging
【Chart number】R445.2;R684
【Document Identification Number】A
【DOI】10.3969/j.issn.1672-5131.2015.11.033
Chinese journal of CT and MRI
th13Volume， th 11 Issue
2015Year11Month
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