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Abstract #0306

Ultrashort and Short T2 signal detection in cartilage and meniscus: How low do we need to go?

Ashley A Williams 1 and Constance R Chu 1

1 Department of Orthopedic Surgery, Stanford University, Stanford, CA, United States

This study examines the range of echo times (TEs) required to detect significant T2* differences in cartilage and meniscus between two clinically distinct cohorts: ACL-injured subjects without arthroscopic evidence of damage to medial femoral cartilage or medial meniscus, and uninjured controls. Reanalysis of MRI data from previously reported studies suggests that while UTE (TE<1ms) was not strictly required to detect differences between these two cohorts, inclusion of UTE (0.6ms) acquisitions augmented the ability of T2* calculation to discriminate between the cohorts, particularly in deep articular cartilage.

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