Table 2.

The CTA imaging characteristic information of patients with ATAAD.

Characteristics	AIS + (n = 86)	AIS – (n = 214)	P
The diameter of aAO	48.0 [44.0;52.0]	47.0 [43.0;50.8]	0.373
The true lumen diameter of aAO	12.0 [6.47;16.0]	17.0 [13.0;22.8]	<0.001*
The true lumen diameter ratio of aAO	0.24 [0.15;0.32]	0.36 [0.26;0.48]	<0.001*
The false lumen thrombus of aAO	23 (26.7)	68 (31.8)	0.473
Retrograde aAO dissection	11 (12.8)	31 (14.5)	0.843
Intimal flap plaque	30 (34.9)	39 (18.2)	0.003*
Entry tear in the aortic arch	41 (47.7)	123 (57.5)	0.157
CCA dissection	67 (77.9)	62 (29.0)	<0.001*
Innominate artery or CCA from false lumen	12 (14.0)	7 (3.3)	0.001*
Low density of unilateral ICA	24 (27.9)	13 (6.1)	<0.001*
VA dissection	1 (1.2)	3 (1.4)	0.676
VA from false lumen	5 (5.8)	5 (2.3)	0.125
VA from aortic arch	1 (1.2)	5 (2.3)	0.448
Low density of unilateral VA	8 (9.3)	6 (2.8)	0.021*
SA dissection	32 (37.2)	37 (17.3)	<0.001*
SA from false lumen	3 (3.5)	2 (0.9)	0.144
VSACV	0 (0.00)	2 (0.9)	0.508

ATAAD, acute type A aortic dissection; AIS, acute ischemic stroke; aAO, ascending aorta; CCA, common carotid artery; ICA, internal carotid artery; VA, vertebral artery; SA, subclacian artery; VSACV, vagal subclavian artery congenital variation.

^*represents the statistical differences.