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Radial IFP (a, c) and relative dilatation (b, d) at various times during and after treatment in normal (a, b) and tumor tissue (c, d). Experimental data showing normalized (to background) T2-weighted signal in the proximity of a treated spot at 2.5 min is included in (b) for comparison (see Supplemental Information). Recovery of IFP is much more rapid in tumors (~ 2.5 min rather than 10 min) due to greater influx of fluid from the vasculature.
