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17:50, 15 November 2018 {{Top
|author1=[[User:Mikael Häggström|Mikael Häggström]]
|author2=
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==Planning==
{{Aortic dissection - indication and choice of modality}}
===Settings===
It should cover the entire aorta, even if symptoms are limited to the thorax (in order to see the extent in case a dissection is detected).
==Evaluation==
<gallery>
File:DissectionCT.png|CT with contrast demonstrating aneurysmal dilation and a dissection of the ascending aorta, as a
</gallery>
===Classification===
{| border="1" cellspacing="0" style="width:320px;float:right;margin-left:0.5em;border-collapse:collapse"
|+ '''Classification of aortic dissection'''
|-
|valign="top"|[[File:Aortic dissection of DeBakey type I.png|100px]]
|valign="top"|[[File:Aortic dissection of DeBakey type II.png|90px]]
|valign="top"|[[File:Aortic dissection of DeBakey type III.png|130px]]
|- style="background:#dcdcdc;"
|-
| colspan=2 style="text-align:center;"|Stanford A (Proximal)
| style="text-align:center;"|Stanford B (Distal)
|-
| style="text-align:center;" border="0"|DeBakey I
| style="text-align:center;"|DeBakey II
| style="text-align:center;"|DeBakey III
|}
The Stanford classification is divided into two groups, A and B, depending on whether the ascending aorta is involved.<ref name=Daily1970>{{cite journal |doi=10.1016/S0003-4975(10)65594-4 |vauthors=Daily PO, Trueblood HW, Stinson EB, Wuerflein RD, Shumway NE |title=Management of acute aortic dissections |journal=Ann Thorac Surg. |volume=10 |issue=3 |pages=237–47 |date=Sep 1970 |pmid=5458238 }}</ref>
*'''A''' – involves the ascending aorta and/or aortic arch, and possibly the descending aorta. The tear can originate in the ascending aorta, the aortic arch, or more rarely, in the descending aorta.
*'''B''' – involves the descending aorta or the arch (distal to the left subclavian artery), without the involvement of the ascending aorta.
The Stanford classification is more useful than the older DeBakey system as it follows clinical practice, as type A ascending aortic dissections generally require primary surgical treatment, whereas type B dissections can initially be treated conservatively.
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