Atherosclerotic plaque distribution and characteristics in young patients with stroke/transient ischemic attack: insights from MR vessel wall imaging and comparison with older counterparts - He, Wen-Wen; Li, Ting; Wang, Yue; Yang, Xiong; Mao, Yu-Fei; Wu, Fei-Yun; Shi, Hai-Bin; Su, Chun-Qiu; Lu, Shan-Shan (Quantitative Imaging in Medicine and Surgery, 2026)