| 刘珍珍,陈建宇,蔡兆熙,蒋新华,张娅,杨泽宏,雷立昌.腰椎间盘退变MRI：T1rho值与Pfirrmann分级及T2值的相关性[J].中国医学影像技术,2014,30(2):260~264 |
| 腰椎间盘退变MRI：T1rho值与Pfirrmann分级及T2值的相关性 |
| MRI of lumbar intervertebral disc degeneration：Correlation of T1rho value with Pfirrmann grade and T2 value |
| 投稿时间：2013-09-27 修订日期：2013-12-13 |
| DOI： |
| 中文关键词: 腰椎 椎间盘退变 磁共振成像 |
| 英文关键词:Lumbar vertebrae Intervertebral disc degeneration Magnetic resonance imaging |
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| 中文摘要: |
| 目的 探讨T1rho值对椎间盘早期退变的预测价值及其与Pfirrmann分级和T2值的相关性。方法 对93例腰背痛患者行腰椎MR检查，采集腰椎矢状位T1WI及T2WI、轴位T2WI、矢状位T1rho及T2-mapping。利用矢状位T2WI对腰椎间盘退变进行Pfirrmann分级，矢状位T1rho及T2-mapping上分别测量NP区和AF区T1rho值及T2值，分析椎间盘T1rho值与Pfirrmann分级及T2值的关系。结果 93例中，Pfirrmann Ⅰ~Ⅴ级腰椎间盘数分别为0、235、179、41、10个。除PfirrmannⅤ级外，其余各级NP区T1rho值均高于AF区（P<0.001）；随椎间盘退变程度加重，NP区T1rho值降低（Pfirrmann Ⅳ级和Ⅴ级间除外），Pfirrmann Ⅱ级AF区T1rho值均高于Pfirrmann Ⅲ~Ⅴ级；NP区及AF区T1rho值与退变分级均呈负相关（NP区：r=－0.75，P<0.001；AF区：r=－0.32，P<0.001）；Pfirrmann Ⅱ~Ⅲ级腰椎间盘NP区T1rho值与T2值呈中度相关（PfirrmannⅡ级：r=0.46；Pfirrmann Ⅲ级：r=0.44；Pfirrmann Ⅳ级：r=0.16；Pfirrmann Ⅴ级：r=0.04）；AF区T1rho值与T2值相关性差（PfirrmannⅡ级：r=0.13；Pfirrmann Ⅲ级：r=0.15；Pfirrmann Ⅳ级：r=0.19；Pfirrmann Ⅴ级：r=0.62）。结论 T1rho对腰椎间盘早期退变具有预测价值，NP区表现明显；椎间盘早期退变过程中，NP区T1rho值与T2值呈中度相关。 |
| 英文摘要: |
| Objective To explore the predictive value of T1rho value in early stage of intervertebral disc degeneration, and to analyze its correlation with Pfirrmann grade and T2 value. Methods Totally 93 low back pain patients who underwent lumbar MR examination were involved. Lumbar sagittal T1WI and T2WI, traverse T2WI, sagittal T1rho and T2-mapping were obtained. Pfirrmann grade of lumbar discs were evaluated on sagittal T2WI. T1rho and T2 values of NP and AF were measured separately on sagittal T1rho and T2mapping, then the relationship between T1rho, Pfirrmann grade and T2 values was analyzed. Results There were 0, 235, 179, 41, 10 lumbar discs of Pfirrmann Ⅰ, Pfirrmann Ⅱ, Pfirrmann Ⅲ, Pfirrmann Ⅳ and Pfirrmann Ⅴ, respectively. Except for Pfirrmann Ⅴ, T1rho values of NP were higher than those of AF in each disc level (P<0.001). With intervertebral disc degeneration aggravated, T1rho values of NP decreased (except for that between Pfirrmann Ⅳ and Ⅴ), T1rho values of Pfirrmann Ⅱ in AF were higher than that of Pfirrmann Ⅲ—Ⅴ. Negative correlation was found between T1rho values and Pfirrmann grade (NP:r=－0.75, P<0.001;AF: r=－0.32, P<0.001). T1rho value and T2 values of NP showed moderate correlation in Pfirrmann Ⅱ—Ⅲ (Pfirrmann Ⅱ: r=0.46;Pfirrmann Ⅲ: r=0.44;Pfirrmann Ⅳ grade: r=0.16;Pfirrmann Ⅴ: r=0.04);T1rho value and T2 values of AF had poor correlations (Pfirrmann Ⅱ: r=0.13;Pfirrmann Ⅲ: r=0.15;Pfirrmann Ⅳ: r=0.19;Pfirrmann Ⅴ: r=0.62). Conclusion T1rho has predictive value for detecting early stage of lumbar intervertebral disc degeneration, especially in NP. In early stage of lumbar disc degeneration, T1rho values of NP are moderately associated with their T2 values. |
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