Volume 19 Issue 6
Jun.  2021
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Article Navigation >  Chinese Journal of General Practice  > 2021  >  19(6): 994-997
WANG Dong-yu, LUO Xiao-ping, LIU Xu-ming, XIANG Jian-yu, HUANG Xu-hao. Study of multimode MRI in the diagnosis of early-stage patellar cartilage injury[J]. Chinese Journal of General Practice, 2021, 19(6): 994-997. doi: 10.16766/j.cnki.issn.1674-4152.001969
Citation: WANG Dong-yu, LUO Xiao-ping, LIU Xu-ming, XIANG Jian-yu, HUANG Xu-hao. Study of multimode MRI in the diagnosis of early-stage patellar cartilage injury[J]. Chinese Journal of General Practice, 2021, 19(6): 994-997. doi: 10.16766/j.cnki.issn.1674-4152.001969
shu

Study of multimode MRI in the diagnosis of early-stage patellar cartilage injury

doi: 10.16766/j.cnki.issn.1674-4152.001969
  • 1.

    Department of Radiology, Wenzhou Traditional Chinese Medicine Hospital, Wenzhou, Zhejiang 325000, China

Funds:

 2017KY632

 Y20180745

  • Received Date: 2020-08-26
    Available Online: 2022-02-16
    Abstract
  •   Objective  To investigate the diagnostic value of diffusion tensor imaging (DTI) and T2*mapping in the evaluation of early-stage patellar cartilage injury.   Methods  Thirty-two cases with patellar cartilage injury and 31 cases with normal patellar cartilage were examined through arthroscopy, and their data recorded from January 2017 to January 2020 were obtained. All the subjects underwent MRI conventional scanning, DTI and T2*mapping examination. The imaging manifestations of DTI and T2*mapping in early-stage patellar cartilage injury and in the control group were analyzed. Differences among quantitative parameters were determined, and the diagnostic efficacy of quantitative parameters in DTI and T2*mapping was analyzed.   Results  The fractional anisotropy (FA), apparent diffusion coefficient (ADC) and T2*value in the early-stage injury group were 0.42±0.08, (1.31±0.17)×10-3 mm2/s and (36.40±8.32) ms, respectively, whereas those in the control group were 0.31±0.09, (1.86±0.27)×10-3 mm2/s and (54.39±8.04) ms, respectively. The differences between the two groups were statistically significant (all P < 0.05). The sensitivity and specificity were 88.3% and 83.6%, and FA threshold was 0.35 in the diagnosis of early-stage patellar cartilage injury. Sensitivity and specificity were 90.6% and 84.2%, respectively, in an ADC threshold of 1.56×10-3 mm2/s and were 85.4% and 80.3%, respectively, in a T2* threshold of 46.88 ms.   Conclusion  The quantitative parameters of multi-modal MRI have a high diagnostic efficiency for early-stage patellar cartilage injury and have clinical values in the diagnosis and evaluation of patellar cartilage injury.

     

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