The compositional difference between ankle and knee cartilage demonstrated by T2 mapping at 7 Tesla MR

被引：28

作者：

Juras, Vladimir ^{[1
,2
]}

Zbyn, Stefan ^{[1
]}

Mlynarik, Vladimir ^{[1
]}

Szomolanyi, Pavol ^{[1
,2
]}

Hager, Benedikt ^{[1
]}

Baer, Peter ^{[1
]}

Frollo, Ivan ^{[2
]}

Tratting, Siegfried ^{[1
,3
,4
]}

机构：

[1] Med Univ Vienna, High Field MR Ctr, Dept Biomed Imaging & Image Guided Therapy, Vienna, Austria

[2] Slovak Acad Sci, Dept Imaging Methods, Inst Measurement Sci, Bratislava, Slovakia

[3] Christian Doppler Lab Clin Mol MR Imaging, Vienna, Austria

[4] Ludwig Boltzmann Inst Expt & Clin Traumatol, Austrian Cluster Tissue Regenerat, Vienna, Austria

来源：

EUROPEAN JOURNAL OF RADIOLOGY | 2016年 / 85卷 / 04期

基金：

奥地利科学基金会;

关键词：

T2; mapping; Cartilage; 3D-TESS; Ankle; knee; ARTICULAR-CARTILAGE; RELAXATION-TIME; OSTEOARTHRITIS; JOINTS; RECONSTRUCTION; RELAXOMETRY; THICKNESS; GENDER;

D O I：

10.1016/j.ejrad.2016.01.021

中图分类号：

R8 [特种医学]; R445 [影像诊断学];

学科分类号：

1002 ; 100207 ; 1009 ;

摘要：

Objectives: The aim was to systematically compare T2 relaxation times of the knee and ankle cartilage within subjects at 7T. Methods: Ten healthy volunteers were examined by 7 Tesla MR using a three-dimensional triple-echo steady state sequence (3D-TESS). The differences between seven cartilage compartments (patella, femur, proximal tibia, and distal tibia and talus in both medial and lateral facet) were analyzed by ANOVA. Results: The results showed statistically significantly higher T2 (mean +/- standard deviation, in milliseconds) values in patellar (25.8 +/- 1.2) and femoral (24.9 +/- 1.3) cartilage compared to the tibial (19.2 +/- 1) and talar (18.1 +/- 0.6 ms) cartilage. The cartilages of the medial and lateral facet in the ankle joint were not significantly different (p > 0.05). Conclusions: This is the first study to systematically compare within-subject T2 values in the knee and ankle non-invasively, in vivo. Our results are in agreement with the previous findings demonstrating different biochemical and biomechanical properties between the knee and ankle cartilage. (c) 2016 Elsevier Ireland Ltd. All rights reserved.

引用

页码：771 / 777

页数：7

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