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Table 1: 
Volumes of abnormal perfusion and T2h regions expressed as a percentage of the total T2 lesion volume within the PRESS box
RegionGrade IIIGrade IV
Volume (%)No. PatientsVolume (%)No. Patients
aPH11.0 ± 10.51516.3 ± 11.620
aRec10.9 ± 17.51212.3 ± 12.720
aPH+aRec1.6 ± 2.3105.1 ± 6.119
T2h74.4 ± 19.01650.4 ± 17.321
  • Note:—aPH indicates the region of abnormal peak height with normal recovery; aRec, the region of abnormal recovery with normal peak height.