IMAGING SCIENCE AND PHOTOCHEMISTRY ›› 2023, Vol. 41 ›› Issue (1): 136-141.DOI: 10.7517/issn.1674-0475.221034

• Review and Articles • Previous Articles     Next Articles

Changes of DCE-MRI Parameters in RA Patients Before and After Drug Treatment and Its Effect on Bone Erosion

ZHENG Yi1, JIANG Yingchun1, YANG Hao3, DONG Zhanjun1, CHEN Yan1, LI Siqiang2   

  1. 1. School of Medical, Huanghuai University, Zhumadian 463000, Henan, P. R. China;
    2. School of Biological and Food Processing Engineering, Huanghuai University, Zhumadian 463000, Henan, P. R. China;
    3. Zhumadian Central Hospital, Zhumadian 463000, Henan, P. R. China
  • Received:2022-10-24 Online:2023-01-23 Published:2023-01-31

Abstract: This paper investigated the changes in quantitative parameters of dynamic enhanced magnetic resonance imaging (DCE-MRI) before and after drug treatment for rheumatoid arthritis (RA) and the effects on bone erosion. 112 patients with RA were selected, and quantitative parameters[maximum enhancement (Emax), maximum relative enhancement (REmax), relative enhancement (RE), and slope of maximum enhancement (Slopemax)] were measured by DCE-MRI before and after drug treatment to compare quantitative DCE-MRI parameters and bone erosion scores before and after treatment in patients with and without response. The results showed that Emax, REmax, RE, and Slopemax in non-responders were higher than in responders before and after treatment, and the change values of Emax, REmax, RE, and Slopemax before and after treatment were lower than those of responders (P<0.05). The change values of Emax, REmax, RE, and Slopemax before and after treatment were positively correlated with drug treatment in RA patients(P<0.05). The area under the curve (AUC) of the combination of Emax, REmax, RE, and Slopemax before treatment to predict RA drug treatment responsiveness as non-response was 0.901 (95% CI:0.830-0.949). The bone erosion scores before and after treatment in non-responders were higher than in responders, and the change in bone erosion scores before and after treatment was lower than in responders (P<0.05). The values of Emax, REmax, RE, and Slopemax before and after treatment were positively correlated with the change in bone erosion score in RA patients (P<0.05). It can be seen that the quantitative parameters Emax, REmax, RE, and Slopemax of DCE-MRI before treatment can predict the responsiveness to RA drug treatment, and the change values of each parameter are closely related to the change of bone erosion.

Key words: rheumatoid arthritis, dynamic enhanced magnetic resonance imaging, efficacy, bone erosion