Before applying T2 mapping scans to the clinical population, it is essential to appreciate normative T2 values and the distribution of these values within the rotator cuff tendons to serve as a baseline, similar to previous normative studies of the tendons utilizing classic MRI technology. Therefore, the objective of this prospective study was evaluate verified asymptomatic volunteers using T2 mapping in order to establish a quantitative MRI protocol using T2 mapping for this purpose and to determine normative T2 values in asymptomatic tendons across age groups. We hypothesized that a normal range and pattern of T2 values exists which correlates to the anatomic structure of the muscle-tendon unit. Additionally, we hypothesized that due to compositional changes which occur during aging, differences in T2 values would be observed across age groups. The results of this study will establish normative, asymptomatic T2 values for the supraspinatus tendon according to age, which can later be used as a reference and baseline for comparison for T2 mapping of damaged rotator cuff tendons and mapping of healing rotator cuff tendons after repair using these clinically relevant subregions.
Full Article: MRI T2 mapping of the asymptomatic supraspinatus tendon by age and imaging plane using clinically relevant subregions