Radiopaedia.org

Aortic dissection is noted involving the ascending aorta with the flap reaching the anterior aortic root proximally -just to the level of origin of a right coronary artery- and extending along ascending aorta, the aortic arch, and the proximal brachycephalic artery, left common carotid artery and left subclavian artery. No extension is noted to the descending aorta.
Both false and true lumina are patent and contrast-filled. 
Evidence of mild fluid surrounding the roots of the aorta and pulmonary trunk.
Cardiac chambers are well opacified.
Lungs are clear. No pleural effusion.