Figure 2From: Cluster-based segmentation of dual-echo ultra-short echo time images for PET/MR bone localization Sagittal views, for two patients, of the measured UTE echoes. (a, c) 30 μs and (b, d) 1.87 ms. The arrows indicate unwanted signal changes (e.g., swallowing motion and folds in the neck fat).Back to article page