Why the study?
To estimate the probability of severe aortic stenosis by calculating the aortic valve calcium score using virtual noncontrast reconstructions derived from non-ECG-gated dual-energy CT scans.
Does aortic valve calcium score derived from virtual noncontrast non-ECG-gated DECT accurately identify severe aortic stenosis in patients scanned for noncardiac indications?
Population
59 patients with visible aortic valve calcifications on non-ECG-gated DECT scans for noncardiac indications
Comparison
AVCS on VNC reconstructions vs echocardiogram-determined degree of aortic stenosis
Design
Retrospective monocentric study
Key result
Aortic valve calcium score derived from virtual noncontrast DECT demonstrated good diagnostic performance in distinguishing severe from nonsevere aortic stenosis (AUC=0.91 in women, 0.95 in men).
Authors
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May enable incidental severe AS detection on noncardiac DECT; hypothesis-generating pending prospective validation.
Observational (n=59)
No
Does aortic valve calcium score derived from virtual noncontrast non-ECG-gated DECT accurately identify severe aortic stenosis in patients scanned for noncardiac indications?
Effect estimate: AUC 0.926
Aortic valve calcium scoring derived opportunistically from non-ECG-gated DECT scans for noncardiac indications can accurately identify severe aortic stenosis.
Byczkowski et al. (2026) conducted an observational in Aortic stenosis (n=59). Aortic valve calcium score (AVCS) from virtual noncontrast DECT was evaluated on Distinguishing between severe and nonsevere aortic stenosis (AUC 0.926). Aortic valve calcium score derived from virtual noncontrast DECT demonstrated good diagnostic performance in distinguishing severe from nonsevere aortic stenosis (AUC=0.91 in women, 0.95 in men).