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Figure 2. Dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI) signal intensity curves as a function of image number (6.0 s/image) at the maximally enhancing pixel for patient 19 (a) before, (b) immediately after and (c) 7 days after MRI-guided focused ultrasound surgery (MRIgFUS), and for patient 21 (d) before, (e) immediately after and (d) 3 days after MRIgFUS. The absence of signal enhancement in (c) is consistent with the absence of residual tumour and the progressive signal enhancement in (b), (e) and (f) is attributable to benign tissue phenomena occurring in the first few days following focused ultrasound ablation.
