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FIG 3. Perfusion data obtained at the level of the lateral ventricles in a patient with a symptomatic 95% stenosis in the left ICA and a 50% stenosis of the contralateral ICA.
A, Preintervention rCBV map.
B, Preintervention TTFM map.
C, Gamma-variate fits corresponding to the depicted regions show a longer TTFM and a smaller rCBV in the symptomatic hemisphere.
D, Postintervention rCBV map.
E, Postintervention TTFM map.
F, Corresponding gamma-variate fits. Note the resolution of interhemispheric asymmetry in TTFM.
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