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Abstract #0290

Delayed Contrast Enhanced MRI of Meniscus

Wei Li1, Robert R. Edelman1, Pottumarthi V. Prasad1

1Department of Radiology, Center of Advanced Imaging, NorthShore University HealthSystem, Evanston, IL, USA

A retrospective analysis of T10 and T1Gd in menisci, including inner and outer zones, was performed in 10 OA patients and 8 healthy subjects (HS). Data were acquired with a 3DLL sequence using ionic and non-ionic contrast agents. Compared to HS, the mean T10 of meniscus in OA was slightly higher, but T1Gd was lower. The meniscus showed a modest correlation with articular cartilage in T1Gd, with little difference in T1 between the two zones. There was a correspondence closed to 1:1 in T1Gd with the two agents. These findings collectively suggest minimal GAG based contrast distribution within the meniscus.