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

Vladimir Juras; Štefan Zbýň; Vladimir Mlynarik; Pavol Szomolanyi; Benedikt Hager; Peter Baer; Ivan Frollo; Siegfried Trattnig

doi:10.1016/j.ejrad.2016.01.021

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

Vladimir Juras, Štefan Zbýň, Vladimir Mlynarik, Pavol Szomolanyi, Benedikt Hager, Peter Baer, Ivan Frollo, Siegfried Trattnig

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	771-777
Number of pages	7
Journal	European Journal of Radiology
Volume	85
Issue number	4
DOIs	https://doi.org/10.1016/j.ejrad.2016.01.021
State	Published - Apr 1 2016
Externally published	Yes

Keywords

3D-TESS
Ankle
Cartilage
T2 mapping
knee

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The compositional difference between ankle and knee cartilage demonstrated by T2 mapping at 7 Tesla MR. / Juras, Vladimir; Zbýň, Štefan; Mlynarik, Vladimir; Szomolanyi, Pavol; Hager, Benedikt; Baer, Peter; Frollo, Ivan; Trattnig, Siegfried.

In: European Journal of Radiology, Vol. 85, No. 4, 01.04.2016, p. 771-777.

Research output: Contribution to journal › Article › peer-review

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abstract = "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.",

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author = "Vladimir Juras and {\v S}tefan Zb{\'y}{\v n} and Vladimir Mlynarik and Pavol Szomolanyi and Benedikt Hager and Peter Baer and Ivan Frollo and Siegfried Trattnig",

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doi = "10.1016/j.ejrad.2016.01.021",

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AU - Juras, Vladimir

AU - Zbýň, Štefan

AU - Mlynarik, Vladimir

AU - Szomolanyi, Pavol

AU - Hager, Benedikt

AU - Baer, Peter

AU - Frollo, Ivan

AU - Trattnig, Siegfried

PY - 2016/4/1

Y1 - 2016/4/1

N2 - 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.

AB - 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.

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