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Abstract #0524

Efficient mapping of ultra-fast T2* decay

Romain Froidevaux1, Markus Weiger1, Manuela Barbara Rösler1, David Otto Brunner1, Benjamin Emanuel Dietrich1, and Klaas Paul Pruessmann1
1Institute for Biomedical Engineering, ETH Zurich and University of Zurich, Zurich, Switzerland

With recent developments in gradient hardware even tissues with T2s down to tens of microseconds have become accessible for MRI. Hence, mapping signal decay or imaging short-T2 tissues selectively is of particular interest.

This can be performed using ultra-short echo time imaging with multiple TEs. However, for typical resolutions this approach is limited to T2s down to hundreds of microseconds.

In this work, the PETRA and HYFI techniques are utilized to map the signal decay of samples with T2s down to 54 μs. Considerably larger scan efficiency is obtained for the HYFI approach.

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