Comparison of UTE ratios based on magnetization transfer and T2 for quantification of Achilles tendinopathy
نویسندگان
چکیده
Introduction: The Achilles tendon is commonly involved in mechanical, degenerative and inflammatory disease. Ultrashort echo time (UTE) imaging allows the tendon to be directly imaged, even when normal or only mildly diseased [1]. Off resonance saturation has been used for introducing contrast into UTE images; near resonance this reflects T2 whereas far from resonance magnetization transfer (MT) dominates [2]. Magnetization transfer in combination with T1 mapping has been previously used to calculate the bound proton fraction in the tendon, which appears to be reduced in tendinopathy [3]. The aim of this work was to determine whether the Magnetization Transfer Ratio (MTR) is changed in tendon disease and to compare this with a similarly simple ratio based on T2*.
منابع مشابه
Comparison of Two MRI-UTE Sequences for the Quantification (T1) of the Human Achilles Tendon
INTRODUCTION: The Achilles tendon is commonly involved in both degenerative and inflammatory tendinopathies. The short T2 of the normal tendon makes early changes difficult to assess with conventional MR sequences. Ultrashort echo time imaging (UTE) [1] can directly visualize the tendon signal allowing quantification, such as T1 relaxometry. T1 measurements may be useful for assessing Achilles ...
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