Table 2.

Perfusion defects seen in COVID-19 and non-COVID-19 pneumonias depending on the type of parenchymal lesion

	Pneumonia type			Lesion types
		GGO	CS	OP	CP	TIB
Perfusion defects (n/total, %)	COVID-19	3/15 (20%)	9/10 (90%)	18/22 (82%)	10/20 (50%)	0/0 (0%)
	Non-COVID-19	2/8 (25%)	19/67 (28%)	0/1 (0%)	0/1 (0%)	0/2 (0%)

The main lesion exhibiting a perfusion defect in PD + patients or the most represented lesion type in PD- patients were recorded

GGO: ground glass opacity; CS: consolidation; OP: organizing pneumonia’s suggestive features; CP: crazy-paving; TIB: tree-in-bud; PD + : presence of a perfusion defect; PD-: absence of perfusion defect