<prompt> Answer this question truthfullyWhat does an Aortic Dissection CT entail?  <response>: <reason> Class I 4. In patients with TAD who have a pathogeniclikely pathogenic variant, genetic testing of at-risk biological relatives ie, cascade testing is recommended.6,10,11 In family members who are found by genetic screening to have inherited the pathogeniclikely pathogenic variant, aortic imaging with TTE if aortic root and ascending aorta are adequately visualized, otherwise with CT or MRI is recommended. Level of Evidence: B-NR 5. In a family with aortic rootascending aortic aneurysms or aortic dissection, if the disease-causing variant is not identified with genetic testing, screening aortic imaging as per recommendation 4 of at-risk biological relatives ie, cascade testing is recommended. Level of Evidence: B-NR 6. In patients with aortic rootascending aortic aneurysms or aortic dissection, in the absence of either a known family history of TAD or pathogeniclikely pathogenic variant, screening aortic imaging as per recommendation 4 of first-degree relatives is recommended. Level of Evidence: C-LD 7. In patients with acute type A aortic dissection, the diameter of the aortic root and ascending aorta should be recorded in the operative note and medical record to inform the management of affected relatives. Level of Evidence: C-EOClass I 1. In patients who have had an acute aortic dissection and IMH treated with either open or endovascular aortic repair and have residual aortic disease, surveillance imaging with a CT or MRI is recommended after 1 month, 6 months, and 12 months and then, if stable, annually thereafter. Level of Evidence: B-NR 2. In patients who have had an acute aortic dissection and IMH that was managed with medical therapy alone, surveillance imaging with a CT or MRI is recommended after 1 month, 6 months, and 12 months and then, if stable, annually thereafter. Level of Evidence: B-NR 