The value of MRI ZTE and T2 mapping sequence in the diagnosis of knee joint osteochondral injury
YU Xiaojie
LIN Meiyu
YU Jianxiu
YU Chengyi
Abstract：Objective To explore the diagnostic value of zero echo time(ZTE)and T2 mapping sequences for knee joint car-tilage injury.Methods A total of 600 patients with suspected knee joint cartilage injury were selected,and all of them under-went ZTE and T2 mapping sequence scans.Using arthroscopy as the gold standard for diagnosis,the diagnostic efficacy of differ-ent MR sequences for knee joint cartilage injury was compared.Results Among the 600 patients with suspected knee joint car-tilage injury,492 cases were positive and 108 cases were negative according to arthroscopy.447 cases were positive and 153 cases were negative according to MR ZTE sequence scans.479 cases were positive and 121 cases were negative according to MR T2 mapping sequence scans.The sensitivity,accuracy,and negative predictive value of MR T2 mapping sequence scans for diag-nosing knee joint cartilage injury were all higher than those of ZTE sequence scans,and the missed diagnosis rate was lower than that of ZTE sequence scans(all P<0.05).However,there were no statistically significant differences in specificity,misdiagno-sis rate,and positive predictive value among different MR scanning sequences for diagnosing knee joint cartilage injury(all P>0.05).Conclusion Among the ZTE and T2 mapping sequences,the T2 mapping sequence has the highest diagnostic value for knee joint cartilage injury.
Keywords：Knee joint bone and cartilage injuryMagnetic resonance imagingZero echo timeT2 mapping
Publication Date：2025-12-30
Online Publishing Date：2026-02-04(First online date of this platform, not the publication date of the document)
Pages：4( 120-122,126 )