42 yo M is evaluated in the ED for a 3 hour history of severe chest pain that radiates to the back. Pain is sharp and tearing in nature. A chest CT is shown.What is the most likely diagnosis for this patient based on the provided clinical presentation and imaging findings?
a) Myocardial infarction
b) Aortic dissection
c) Pulmonary embolism
d) Pneumothorax
