Fig. 3
From: Musculoskeletal MRI at 7 T: do we need more or is it more than enough?
a T2 map acquired with Carr-Purcell-Meiboom-Gill (CPMG) multi-echo spin-echo (MESE) sequence, pseudo-colour-coded and overlaid on a morphological image of a 41-year-old patient with Pridie drilling on the medial femoral condyle (echo time 11.9 ms). The ratio between the native and lesion cartilage T2s was 0.81. b T2 map acquired with a three-dimensional triple-echo steady state (3D TESS) sequence, pseudo-colour-coded and overlaid on the second acquired image (F0, the lowest order steady state free precession—free induction decay mode acquired in the repetition time). The ratio between the native and lesion cartilage T2s was 0.83. Focal increase in T2 values is observable with both techniques. Bone oedema is also present (arrow). The dynamic range of the CMPG MESE T2 map is higher compared to that of the 3D-TESS T2 map: the lesion appears to be more diffuse, although the ratios between native and lesion cartilage T2s are comparable.
Reprinted with permission from: Juras et al., Eur Radiol 2016 (reference [21])