vessel wall imaging
Specialized MRI techniques that visualize arterial wall characteristics beyond the vessel lumen.
Full Definition
Vessel wall imaging encompasses advanced MRI techniques specifically designed to visualize the arterial wall structure, composition, and pathology rather than just the vessel lumen. These sequences can differentiate between various plaque components including lipid core, fibrous cap, calcification, and intraplaque hemorrhage. High-resolution vessel wall imaging is particularly valuable in assessing intracranial arteries, carotid arteries, and aortic pathology where conventional luminal imaging may be inadequate. The technique requires specialized pulse sequences and often contrast enhancement to optimize tissue characterization.
Usage
Usage note: Often abbreviated as VWI in imaging protocols; emphasize the focus on wall rather than luminal assessment.
In Context
- "Vessel wall imaging demonstrated intraplaque hemorrhage consistent with plaque vulnerability." — Carotid MRI report
- "High-resolution vessel wall imaging was performed to assess intracranial arteriopathy." — Neurovascular MRI protocol