Fig. 2.
Examples of histograms generated using the BEACH tool. Conventional MR images (a–c), PDFF maps (d–f) and PDFF histograms (g–i) are shown. In the normal patient’s histogram (g), PDFF values are clustered around 50%, corresponding to normal marrow. In the patient with inflammation, a number of low-PDFF pixels have emerged in the histogram (h). In the patient with fat metaplasia, there is an upward shift in PDFF values, with a large number of high-PDFF pixels (i)