Figure 7a:

Quantitative analysis (T2* measurements) of globular calcifications (ovals) on axial (a) 3D UTE subtraction image (echo time, 8 μsec to 5 msec) and (b) 2D IR UTE image. (c) Graph shows data and corresponding fitting curves. T2* values are higher with the 3D UTE technique (dashed curve) than with the 2D IR UTE technique (solid curve), which focuses on shorter T2* components. Note that only globular calcifications are visible on b, contrary to punctate calcifications (arrows in a). TE = echo time.