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Imaging modalties of the Aorta
Chest Radiography (CXR)
- CXR has overall limited sensitivity (~30–60 %) for thoracic aortic aneurysm, and
- alone cannot be used to exclude acute or chronic aortopathy
- Calcification or tortuosity of the ascending, arch, and descending thoracic aorta may be visualized, but this is a non-specificific finding in the elderly.
- Opacification of the aortico-pulmonary window, enlargement of the thoracic aorta, increased mediastinal width, displacement of trachea from midline, or obscured/irregular aortic margin may indicate thoracic aortic aneurysm, dissection, or rupture. Displaced intimal calcium and pleural effusion may indicate dissection.