Abstract #5111

On the elimination of the fat saturation effect in ultrashort echo-time imaging of Achilles tendons.

Peter Latta¹, Vladimir Juras², Zenon Starcuk³, Martin Kojan¹, Ivan Rektor¹, Pavol Szomolanyi², and Siegfried Trattnig²

¹Masaryk University, Brno, Czech Republic, ²Medical University of Vienna, Vienna, Austria, ³Institute of Scientific Instruments, Czech Academy of Sciences, Brno, Czech Republic

Synopsis

Keywords: Tendon/Ligament, Skeletal, Achilles tendon, Bi-exponential . T2*

We investigated tri‑component analysis of 2D-UTE in-vivo measurements on a clinical 3T scanner and tested its ability to eliminate the effect of fat suppression on short T₂* values in Achilles tendons. We found that fat-suppressed acquisition with two-component analysis provides ratios of short-T₂* to long-T₂* component intensities that are substantially lower (by a factor 0.95 to 0.55) than those resulting from fat-unsuppressed acquisition and tri-component fitting. Hence it seems that the combination of 2D-UTE acquisition with tri-component analysis might contribute to further improvement of T₂* estimation accuracy.

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