Overview
CT angiography and perfusion imaging provide rapid, high resolution assessment of vascular anatomy and tissue perfusion critical for stroke and vascular disease management. Advances in acquisition speed, spectral imaging and AI assisted post processing enhance diagnostic confidence and speed decision making. Protocol optimization balances contrast dose, radiation and diagnostic yield.
Stroke and Perfusion
CT perfusion identifies salvageable penumbra and core infarct to guide reperfusion decisions in acute stroke and extends treatment windows for selected patients. Automated perfusion software with validated thresholds streamlines triage but requires local validation and QA. Rapid transfer of perfusion maps to stroke teams shortens door to needle and door to groin times.
Vascular Applications
High resolution CTA with spectral or photon counting enhancements improves plaque characterization, endoleak detection and peripheral vascular assessment. Dynamic CTA and time resolved techniques provide functional flow information for complex vascular lesions. Standardized reporting templates support surgical and endovascular planning.
Operational Considerations
Ensure rapid protocol availability and trained technologists for emergent CTA and perfusion studies and maintain robust stroke imaging pathways. Monitor dose and contrast usage and validate automated tools across scanner models. Coordinate with neurology and vascular teams for integrated interpretation and timely intervention.