Key result
The thoracic descending aorta undergoes significant conformational changes during the cardiac cycle, with systolic diameters being significantly larger than diastolic diameters.
Why the study?
Does the thoracic descending aorta undergo significant conformational changes during the cardiac cycle as assessed by 256-slice CT?
Observational (n=30)
No
Does the thoracic descending aorta undergo significant conformational changes during the cardiac cycle as assessed by 256-slice CT?
p-value: p=<0.01
The thoracic descending aorta undergoes significant conformational changes during the cardiac cycle, which is important for accurate sizing in endovascular procedures.
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Aortic diameter variation by cardiac phase may affect endovascular sizing accuracy; leaves open whether ECG-gating improves procedural outcomes.
Carrascosa et al. (2013) conducted an observational in Patients referred for CT angiography of the thoracic aorta (n=30). Systolic cardiac phase vs. Diastolic cardiac phase was evaluated on Descending aorta measurements (maximal/minimal diameter and lumen area) at 10, 40, and 80 mm distance from the left subclavian artery (p=<0.01). The thoracic descending aorta undergoes significant conformational changes during the cardiac cycle, with systolic diameters being significantly larger than diastolic diameters.
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