Multimodal Carotid Risk Stratification with Large Vision-Language Models: Benchmarking, Fine-Tuning, and Clinical Insights. - Daphne Tsolissou; Theofanis Ganitidis; Konstantinos Mitsis; Stergios CHristodoulidis; Maria Vakalopoulou; Konstantina S. Nikita (CoRR, 2025)