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

20 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

Bibliographical note

Funding Information:
This study has received funding by the Austrian Science Fund (FWF) P 25246 B24 and Slovak Grant Agency APVV-0431-12 .

Publisher Copyright:
© 2016 Elsevier Ireland Ltd. All rights reserved.

Keywords

3D-TESS
Ankle
Cartilage
T2 mapping
knee

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10.1016/j.ejrad.2016.01.021

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

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.",

keywords = "3D-TESS, Ankle, Cartilage, T2 mapping, knee",

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",

note = "Funding Information: This study has received funding by the Austrian Science Fund (FWF) P 25246 B24 and Slovak Grant Agency APVV-0431-12 . Publisher Copyright: {\textcopyright} 2016 Elsevier Ireland Ltd. All rights reserved.",

year = "2016",

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

language = "English (US)",

volume = "85",

pages = "771--777",

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T1 - The compositional difference between ankle and knee cartilage demonstrated by T2 mapping at 7 Tesla MR

AU - Juras, Vladimir

AU - Zbýň, Štefan

AU - Mlynarik, Vladimir

AU - Szomolanyi, Pavol

AU - Hager, Benedikt

AU - Baer, Peter

AU - Frollo, Ivan

AU - Trattnig, Siegfried

N1 - Funding Information: This study has received funding by the Austrian Science Fund (FWF) P 25246 B24 and Slovak Grant Agency APVV-0431-12 . Publisher Copyright: © 2016 Elsevier Ireland Ltd. All rights reserved.

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.

KW - 3D-TESS

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KW - Cartilage

KW - T2 mapping

KW - knee

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

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