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Fig. 1A. —Segmentation of structures from multiple 2D MR images to generate 3D
models for volume calculations and 3D assessment of liver tumor ablations.
Postprocedural enhanced axial MR image (T1-weighted fast multiplanar spoiled
gradient-echo; TR/TE, 310/1.6; flip angle, 75°; section thickness, 5 mm;
field of view, 40 cm) obtained at 48 hr shows teardrop-shaped nonenhancing
region of cryonecrosis (arrow). Tumor is seen as hyperintense
structure (arrowhead) relative to ablated tissue.
