Inclusion Criteria:
- Age > 21 years
- Stanford type B aortic dissection not involving the aorta at or proximal to the innominate artery, without rupture and/or malperfusion (renal, mesenteric, or extremity)
- Acuity: within 48 hours - 6 weeks of index admission
- Ability to provide written informed consent and comply with the protocol
- Investigator believes anatomy is suitable for TEVAR
Exclusion Criteria:
- Ongoing systemic infection
- Pregnant or planning to become pregnant in the next 3 months
- Life expectancy related to non-aortic conditions < 2 years
- Unwilling or unable to comply with all study procedures including serial imaging follow-up
- Known patient history of genetic aortopathy
- Penetrating Aortic Ulcer and Intramural hematoma
- Iatrogenic (traumatic) aortic dissection
- Prior surgery for aortic dissection