Fig. 1
From: Musculoskeletal MRI at 7 T: do we need more or is it more than enough?
At the top left, the comparison of the same knee of the same healthy volunteer acquired with fast imaging employing steady-state acquisition with coherence interference (FIESTA-C) at 1.5-T, 3-T, and 7-T (from left to right), showing the improved spatial and contrast resolution for cartilage visualisation. At the bottom left, a detail of the comparison of the femoral-patellar compartment at 1.5-T, 3-T, and 7-T is displayed (from left to right). On the right, an example of semiautomatic segmentation of the different cartilage compartments of the knee is depicted with multiplanar reformation and corresponding volume rendering of the segmented cartilage (red, patellar cartilage; green, femoral cartilage; blue, tibial cartilage). Images were acquired at the University Hospital of Cisanello, Pisa, Italy (1.5-T and 3-T) and at the Imago7 Foundation, Pisa, Italy (7-T).
Adapted with permission from Aringhieri et al, Clin Exp Rheumatol 2018. Segmentations were performed with ITK-SNAP (http://www.itksnap.org/pmwiki/pmwiki.php)