Article Figures & Data
Figures
- FIG 1.
Angiograms before and during gentle CAS and at 4 months. A, Angiograms before CAS reveal extremely high-grade stenosis (arrow) and a “reduced MCA perfusion territory” in the middle cerebral artery (arrowhead). B, An inflated balloon with a 3.0-mm diameter. C, Angiography after CAS shows a residual stent stenosis. D, Angiography at 4 months shows self-expansion of the stent.
- FIG 2.
MRA and SPECT in the same case as in Fig 1. A, MRA before CAS reveals an MCA rSI value of 0.44: [(x: 784) divided by (y: 1775)]. B, SPECT before CAS demonstrates a CBF decrease in the right MCA territory (arrows). AI was 80.3%% [(a: 31.94) divided by (b: 39.78)], and rCBF% was 83.9% [(a: 31.94) divided by (c: 38.07)]. C, MRA after CAS reveals an MCA rSI of 1.16: [(x: 2967) divided by (y: 2667)]. D, SPECT after CAS demonstrates a CBF increase in the right MCA territory (arrows). AI% was 92.7% [(a: 37.95) divided by (b: 40.93)] and rCBF% was 99.9% [(a: 37.95) divided by (c: 37.99)]. rSI indicates relative signal intensity.
Tables
Changes in luminal diameters and hemodynamic factors before and after CAS
CAS Procedure Strategy (n = 28) Gentle CAS: Intentional Residual Stent Stenosis Before After NASCET (%) (median) (IQR) 81.8 (77.9–89.1) 39.5 (29.6–51.1)a MLD before and MSD after CAS (median) (IQR) (mm) 0.63 (0.4–0.94) 2.9 (2.6–3.7)a MCA relative SI (median) (IQR) 0.73 (0.57–0.85) 1.01 (0.9–1.06)a PSV (median) (IQR) (cm/s) 316 (198.8–389.9) 91.9 (70.7–144)a AI% (median) (IQR) 96.9 (92.3–100.0) 100.8 (93.6–103.9)b rCBF% (median) (IQR) 88.9 (83.7–94.8) 94.6 (91.4–100.6)b AVDO2 (median) (IQR) (O2 mL/mL) 6.9 (6.0–7.8) 6.3 (5.1–6.8)c OEF (median) (IQR) 0.41 (0.37–0.46) 0.41 (0.35–0.43) SBP (median) (IQR) (mm Hg) 153.5 (142.5–167.5) 132.5 (115.8–140.8a DBP (median) (IQR) (mm Hg) 77.5 (70–87.8) 67 (62–71.8)a Average BP (median) (IQR) (mm Hg) 104.9 (94.7–110.9) 88.7 (82.8–90.8)a
