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Table 1 Threshold values used to determine infarct core in grey matter (GM) and white matter (WM) for each CTP technique [18]

From: Can CT perfusion accurately assess infarct core?

  Core volume definition
Threshold technique AbsCBF AbsCBV rCBF rCBV
Gray Matter (GM) ≤13.80 ≤1.31 ≤0.42 ≤0.89
White Matter (WM) ≤9.80 ≤0.85 ≤0.56 ≤0.81