Key result
Unenhanced CT identifies characteristic acute aortic dissection findings in ~91% of patients.
Why the study?
Does unenhanced CT accurately identify acute aortic dissection in patients presenting to the hospital?
Observational (n=81)
No
Does unenhanced CT accurately identify acute aortic dissection in patients presenting to the hospital?
p-value: p=<0.01
Unenhanced CT can be a useful and rapid diagnostic tool for acute aortic dissection, particularly in elderly patients or those with suspected renal dysfunction where contrast use is restricted.
Unenhanced CT may aid diagnosis when contrast is restricted; leaves open prospective validation against contrast CT.
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Otani et al. (2013) conducted an observational in Acute aortic dissection (n=81). Unenhanced CT vs. Non-dissection patients was evaluated on Presence of characteristic dissection findings on unenhanced CT (inward displacement of intimal calcifications, crescentic high-attenuation hematoma, visible flap, or pericardial hemorrhage) (p=<0.01). Unenhanced CT identified characteristic findings of acute aortic dissection in 90.9% of patients, with inward displacement of intimal calcifications and crescentic high-attenuation hematoma significantly more common than in controls (p<0.01).
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