Table 4:

Calculation of the 8-point aphasia improvement scorea

Aphasia score on admission NIHSS examination1–3
Proximal cerebral artery occlusion Absent0
    on admission CTAPresent2
rCBF of the sublobar insular ribbon >1.5−2
    (lower third)0.66–1.50
rCBF of angular gyrus GM (BA 39)>0.660
  • a The aphasia outcome score is the sum of all points based on the admission language component of the NIHSS score, CTP (2 regions), and the presence or absence of CTA primal intracranial occlusion. Note that an rCBF > 1.5 corresponds to a region of marked hyperemia compared with the baseline normal cerebral blood flow in the rCBF of that region.