Figure 2.

A 59-year-old man with cigarette smoking history and drinking history presented with recurrent transient attacks of dizziness for 2 months. (A) Pre-operative digital subtraction angiography (DSA) showed stenosis at the middle segment of the basilar artery (BA) with 75.5% of degree. (D) A 2.8 × 8 mm Apollo balloon-mounted stent (MicroPort NeuroTech, Shanghai, China) was placed at the stenotic segment. The patient had a new cerebral infarction at the left cerebellum within 72 h after stenting without clinical symptoms, which was detected by diffusion-weighted imaging with a new high signal (B) and apparent diffusion coefficient imaging with a new low signal (E). Figures of the right column are cross-sectional T1-weighted BA images at the maximal lumen narrowing (MLN) (C) and reference (REF) (F) sites. The plaque was eccentric and belonged to the ventral side of the BA (C). Vessel area (VA) and lumen area (LA) at the MLN (C, VA 10.23 mm², LA 0.98 mm²) or REF (F, VA 14.31 mm², LA 4.98 mm²) sites were manually traced for measuring after zooming in 400 times. Wall area (WA) at the MLN or REF sites was calculated by VA-LA. The plaque burden was calculated as [(WA _MLN-WA _REF)/VA _MLN] × 100% and the remodeling index was calculated as VA _MLN/VA _REF. Therefore, the plaque burden was −0.78%. The remodeling index of the vessel at MLN was 0.71, which was categorized as negative remodeling.