Anatomy-informed multi-task framework for visceral artery aneurysm screening on non-contrast CT.
Visceral artery aneurysm (VAA) screening on non-contrast CT (NCCT) is fundamentally a structure-constrained representation learning problem under weak vascular contrast. In NCCT, visceral arteries lack explicit lumen enhancement, and aneurysms often appear only as subtle local dilatations embedded in thin and branching...