Table 2:

Vascular imaging findings

Subject	Dissected Vessel	Modality	Lumen^{^a}	Wall^{^b}	Vessel Contour	Other
1	Rt VA	CTA	Intimal flap	Thickened	Stenosis
	Rt VA	BBI	Intimal flap	Thickened	Occlusion	Periadvential T2 hyperintensity
				T1 hyperintensity +
2	Lt VA	CTA	–	Thickened	Stenosis
	Lt VA	BBI	–	Thickened	Stenosis
				T1 hyperintensity ++
				T2* hypointensity +
	Rt VA	CTA	–	Thickened	Stenosis
	Rt VA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity ++
3	Lt VA	CTA	–	Thickened	Stenosis
	Lt VA	BBI	–	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity ++
4	Lt VA	CTA	–	Normal	Stenosis	(Abnormal but equivocal cause)
	Lt VA	BBI	–	Thickened	Occlusion	Periadvential T2 hyperintensity
				T1 hyperintensity ++
5	Lt VA	CTA	–	Thickened	Occlusion
	Lt VA	BBI	–	Thickened	Occlusion	Periadvential T2 hyperintensity
				T1 hyperintensity +
6	Lt VA	CTA	–	Thickened	Stenosis
	Lt VA	BBI	–	Thickened
				T1 hyperintensity ++	Stenosis
	Rt VA	CTA	–	Thickened	Stenosis
	Rt VA	BBI	–	Thickened
				T1 hyperintensity ++	Stenosis
				T2* hypointensity +
7	Rt VA	CTA	–	Thickened	Occlusion
	Rt VA	BBI	–	Thickened	Occlusion	Periadvential T2 hyperintensity
				T1 hyperintensity +
8	Lt VA	CTA	–	Thickened	Stenosis
	Lt VA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity ++
9	Lt VA	CTA	Intimal flap	Thickened	Occlusion
	Lt VA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity +
				T2* hypointensity +
10	Lt VA	CTA	–	Thickened	Occlusion
	Lt VA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity +/++
	Rt VA	CTA	–	Thickened	Stenosis
	Rt VA	BBI	–	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity +
11	Rt VA	CTA	Intimal flap	Thickened	Stenosis	(Abnormal but equivocal cause)
	Rt VA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity +/++
12	Lt VA	CTA	–	Thickened	Occlusion
	Lt VA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T2* hypointensity +
13	Rt CA	CTA	–	Thickened	Occlusion
	Rt CA	BBI	Intimal flap	Thickened	Occlusion	Periadvential T2 hyperintensity
				T1 hyperintensity +
14	Rt CA	CTA	–	Thickened	Occlusion
	Rt CA	BBI	Intimal flap	Thickened	Occlusion	Periadvential T2 hyperintensity
				T1 hyperintensity ++
15	Lt CA	BBI	Intimal flap	Thickened	–	Periadvential T2 hyperintensity
				T1 hyperintensity +
	Rt CA	CTA	Intimal flap	Thickened	Stenosis
	Rt CA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity +
16	Rt CA	CTA	Intimal flap	Thickened	Stenosis	Pseudoaneurysm
	Rt CA	BBI	–	Thickened	Stenosis	Pseudoaneurysm
				T1 hyperintensity ++		Periadvential T2 hyperintensity
17	Lt CA	CTA	–	Thickened	Occlusion
	Lt CA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity ++
18	Lt CA	CTA	Intimal flap	Thickened	Occlusion
	Lt CA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity ++
	Rt CA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity ++
19	Lt CA	CTA	Intimal flap	Thickened	Stenosis
	Lt CA	BBI	Intimal flap	Thickened	Stenosis	Periadvential T2 hyperintensity
				T1 hyperintensity ++

↵a Intraluminal flap present or absent.
↵b Wall characteristics: + indicates moderate; ++, strong.