Value of Perfusion CT in the Prediction of Intracerebral Hemorrhage after Endovascular Treatment

Table 3

Effect size for bleeding prediction.

	Effect size	Effect size	Effect size
	No HT/HI	No HT/PH	HI/PH
ASPECTS	0.45	0.50	0.07
CTP core	0.09	0.45	0.37
CBF ROI1	0.06	0.21	0.22
CBV ROI1	0.07	0.14	0.23
FED ROI1	0.09	0.16	0.27
CBV 1/1 ratio	0.36	0.45	0.14
CBV 1-1 Diff.^†	0.11	0.11	0.04
FED 1-1 Diff.^‡	0.12	0.11	0.06

Abbreviations: ASPECTS, Alberta Stroke Program Early CT Score; CTP core, computed tomography perfusion infarct core; CBF, cerebral blood flow; CBV, cerebral blood volume; FED, flow extraction product; ROI1, deep middle cerebral artery region of interest. Mean values of the CBV in the deep middle cerebral artery ROI of the affected hemisphere relative to the contralateral hemisphere in percent. ^†Absolute differences between the mean values of the CBV in the deep middle cerebral artery ROI of the affected hemisphere and the contralateral hemisphere. ^‡Absolute differences between the mean values of the FED in the deep middle cerebral artery ROI of the affected hemisphere and the contralateral hemisphere.