A 62-year-old man with a history of uncontrolled hypertension presents to the emergency department with sudden onset of severe chest pain that radiates to his back. The pain is described as tearing in nature. On examination, his blood pressure is 190/110 mmHg in the right arm and 170/100 mmHg in the left arm, with a noticeable pulse discrepancy between both arms. Suspecting an acute aortic dissection, CT angiography is carried out. In aortic dissection, which one of the below is more likely to be a feature of the true lumen rather than the false lumen?