UTE sequences have been previously used to image short T2 tissues. T1ρ has shown promising results in assessing macromolecules and has been proposed as a potential biomarker for tissue degeneration. In this study, we aimed to demonstrate bi-exponential relaxation of the patellar tendon at 3T, using the 3D ultrashort echo time T1ρ (UTE-T1ρ) sequence. Five ex-vivo knee joints were scanned, and we were able to demonstrate better fitting with a bi-component model and better discern the long and short relaxation components of the tissue, along with their respective fractions
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Malhi et al. (2024) studied this question.
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