A preliminary study of the T1rho values of normal knee cartilage using 3 T-MRI

Hajimu Goto, Yuki Iwama, Masahiko Fujii, Nobukazu Aoyama, Seiji Kubo, Ryosuke Kuroda, Yoshiharu Ohno, Kazuro Sugimura

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28 Citations (Scopus)

Abstract

To investigate the degree of the effect of aging and weight-bearing on T1rho values in normal cartilage. Materials and methods: Thirty-two asymptomatic patients were examined using 3.0-T magnetic resonance imaging (MRI) to determine knee cartilage T1rho values and T2 values. The femoral and tibial cartilage was divided into weight-bearing (WB-Rs) and less-weight-bearing (LWB-Rs) regions. Single regression analysis was used to assess the relationship between cartilage T1rho values and age and between T2 values and age. Analysis of variance and post hoc-testing were used to evaluate differences in WB-Rs and LWB-Rs cartilage T1rho values and T2 values. Multiple linear regression modeling was performed to predict cartilage T1rho values. Results: Cartilage T1rho values correlated positively with age for all cartilage regions tested (p < 0.001). There were no significant correlations between cartilage T2 values and age. In both the medial femoral and tibial cartilage, T1rho values were significantly higher in WB-Rs than in LWB-Rs (p < 0.05). There were no significant differences in T2 values between WB-Rs and LWB-Rs. Multiple linear regression analysis showed that both age and weight-bearing were significant predictors of increased medial knee cartilage T1rho values (p < 0.001). Conclusions: Aging and the degree of weight-bearing correlate with the change in cartilage T1rho values. Based on multiple regression modeling, aging may be a more important factor than weight-bearing for cartilage T1rho values.

Original languageEnglish
Pages (from-to)e796-e803
JournalEuropean journal of radiology
Volume81
Issue number7
DOIs
Publication statusPublished - 07-2012
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Radiology Nuclear Medicine and imaging

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