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01.05.2013 | Magnetic Resonance

T2* mapping and delayed gadolinium-enhanced magnetic resonance imaging in cartilage (dGEMRIC) of glenohumeral cartilage in asymptomatic volunteers at 3 T

verfasst von: Bernd Bittersohl, Falk R. Miese, Christin Dekkers, Hüseyin Senyurt, Jörn Kircher, Hans-Jörg Wittsack, Gerald Antoch, Rüdiger Krauspe, Christoph Zilkens

Erschienen in: European Radiology | Ausgabe 5/2013

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Abstract

Objectives

To establish baseline T2* and T1_Gd values of glenohumeral cartilage at 3 T.

Methods

Forty asymptomatic volunteers (mean age: 24.8 ± 2.2 years) without shoulder abnormalities were included. The MRI protocol comprised a double-echo steady-state (DESS) sequence for morphological cartilage evaluation, a gradient-echo multiecho sequence for T2* assessment, and a gradient-echo dual-flip-angle sequence for T1_Gd mapping. Statistical assessment involved a one-way analysis of variance (ANOVA) to identify the differences between various regions of the glenohumeral joint and intraclass correlation (ICC) analysis comparing repetitive T2* and T1_Gd measures to assess intra- and interobserver reliability.

Results

Both techniques revealed significant differences between superior and inferior glenohumeral cartilage demonstrating higher T2* (26.2 ms vs. 23.2 ms, P value < 0.001) and T1_Gd (750.1 ms vs. 720.2 ms, P value = 0.014) values in the superior regions. No trend was observed in the anterior-posterior measurement (P value range: 0.279–1.000). High intra- and interobserver agreement (ICC value range: 0.895–0.983) was noted for both T2* and T1_Gd mapping.

Conclusions

T2* and T1_Gd mapping are reliable in the assessment of glenohumeral cartilage. The values from this study can be used for comparison to identify cartilage degeneration in patients suffering from shoulder joint abnormalities.

Key Points

• T2* mapping and dGEMRIC are sensitive to collagen degeneration and proteoglycan depletion.

• This study aimed to establish baseline T2*/dGEMRIC values of glenohumeral cartilage.

• Both techniques revealed significant differences between superior and inferior glenohumeral cartilage.

• High intra-/interreader agreement was noted for both T2* mapping and dGEMRIC.

• These baseline normal values should be useful when identifying potential degeneration.

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Titel: T2* mapping and delayed gadolinium-enhanced magnetic resonance imaging in cartilage (dGEMRIC) of glenohumeral cartilage in asymptomatic volunteers at 3 T
verfasst von: Bernd Bittersohl
Falk R. Miese
Christin Dekkers
Hüseyin Senyurt
Jörn Kircher
Hans-Jörg Wittsack
Gerald Antoch
Rüdiger Krauspe
Christoph Zilkens
Publikationsdatum: 01.05.2013
Verlag: Springer-Verlag
Erschienen in: European Radiology / Ausgabe 5/2013
Print ISSN: 0938-7994
Elektronische ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-012-2718-5

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T2* mapping and delayed gadolinium-enhanced magnetic resonance imaging in cartilage (dGEMRIC) of glenohumeral cartilage in asymptomatic volunteers at 3 T