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MR imaging investigation of the brain metastasis transfer study revealed lesions with differing size, shape, and permeability. Tofts Ktrans, Ex-Tofts Ktrans, and Ex-Tofts Vp target maps as well as their corresponding CNN PK maps were depicted. The T2-w detectable edge of the lesions in Case 2 and 3 that exhibited lower permeability (arrows) were superimposed as a white contour on the PK maps.
