Dynamic contrast-enhanced (DCE) MRI provides additional information on blood-brain barrier integrity. The Ktrans is a measure of capillary permeability obtained using DCE MRI that is directly proportional to the level of permeability of the blood-brain barrier. The purpose of this study was to evaluate the effect of SRS on cerebral metastases using Ktrans derived from DCE MRI and to explore the ability of Ktrans measurements on predicting midterm tumor outcomes after Stereotactic radiosurgery (SRS).
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