Table 2. Indication for initial chest imaging study.

Variable	Value
Lung cancer screening, n (%)	36 (18.3)
Coronary artery calcium score, n (%)	31 (15.7)
Shortness of breath, acute or chronic, n (%)	25 (12.7)
Chest X-ray abnormality, n (%)	21 (10.7)
Echocardiogram abnormality, n (%)	20 (10.2)
Cancer staging, n (%)	14 (7.1)
Trauma, n (%)	8 (4.1)
Abdominal imaging abnormality, n (%)	7 (3.6)
Family history of TAD, n (%)	6 (3.0)
Neck mass, n (%)	2 (1.0)
AAA evaluation, planned repair, n (%)	2 (1.0)
Pre-Afib ablation evaluation, n (%)	1 (0.5)
Other, n (%)	3 (1.5)

Abbreviations: AAA, abdominal aortic aneurysm; TAD, thoracic aortic disease.