Comparison of T1ρ,MR and arthroscopy in the diagnosis of knee joint cartilage

VernacularTitle:T1ρ序列、MR和关节镜在膝关节软骨成像中的应用对比
Author: Lixiang GAO ¹ ; Huishu YUAN
Author Information

1. 北京大学第三医院放射科
Keywords: knee joint; cartilage; magnetic resonance imaging; arthroscopy
From: Journal of Practical Radiology 2018;34(2):256-259
CountryChina
Language:Chinese
Abstract: Objective To explore the value of T1ρin the diagnosis of knee osteoarthritis(OA),and to compare the diagnostic ability of T1ρ, MR and arthroscopy for early patellar cartilage injury.Methods 28 patients underwent T1ρMR imaging.We processed the images and measured T1ρvalues of the normal and damage cartilage.All cases were recorded results of MR and arthroscopy.Results T1ρ sequence could show cartilage clearly,and performed different colour levels,T1ρvalues of normal cartilage were less than 50 ms,and increased with aggravation of cartilage injury.The differences ofⅠ-ⅡandⅢ-Ⅳhad statistically significant.9 cases in grade 0 under MR and arthroscopy performed high values in T1ρ,which similar to gradeⅠ-Ⅱinjury,the diagnosis sensitivity of T1ρfor early cartilage injury was higher than MR and arthroscopy.In addition,arthroscopy and MR had high consistency in the diagnosis of cartilage.Conclusion T1ρcan effectively predict early cartilage injury and knee OA non-invasively,and can detect early cartilageinjury before MR and arthroscopy.