SMR threshold percentages and the ideal treatment paradigm. Based on this patient series, for highly diffuse tumors, resection of at least 30% of the FLAIR hyperintensity beyond the contrast enhancement showed a survival benefit, with no data supporting SMR above 99% of the FLAIR region to be beneficial. For moderately diffuse tumors, resection of at least 10% of the FLAIR hyperintensity beyond the contrast enhancement showed a survival benefit, with no data supporting that SMR above 60% provides further benefit. For nodular tumors, only resection between 10% and 29% of the FLAIR hyperintensity beyond the contrast enhancement showed a survival benefit.