Yongxain Qian1, Ashley A. Williams2, Constance R. Chu2, Fernando E. Boada1
1MR Research Center, Radiology, University of Pittsburgh, Pittsburgh, PA, United States; 2Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States
This work presents new observations of T2* decay of multiple components on human knee cartilage explants with ultrashort echo time (UTE) acquisitions on a clinical 3T MRI scanner. Four types of T2* decay (mono-, bi-, tri-, and non-exponential) in cartilage explants were detected. Multi-component T2* decays were mapped on a pixel-by-pixel basis, permitting examination of the spatial distribution of T2* relaxations in cartilage.