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Fig. 1B —T1-weighted dynamic contrast-enhanced relative permeability
and T2*-weighted dynamic susceptibility contrast (DSC) imaging
studies in 51-year-old man with biopsy-proven glioblastoma multiforme.
Color-coded relative permeability data (dynamic contrast-enhanced imaging)
superimposed on image shown in A depict pixels that have peak signal
intensity values between 3 and 5 SDs above mean signal intensity in normal
right hemisphere in blue, those in the 5- to 7-SD range in yellow, and those
greater than 7 SDs in red. Note that unenhancing region of central necrosis
seen in tumor in A does not have any pixels denoting
high-signal-intensity values. Mean relative permeability value in this lesion
was 7.16 SDs above normal baseline, the highest seen in our series. Note that
highest values are seen in medial and anterior aspects of tumor.
