Figure 2

IVOCT images of healthy human artery and quantitative analysis for penetration depth. (a) and (c) IVOCT images with the 1.3 μm IVOCT system in air and water, respectively. (b) and (d) IVOCT images with the 1.7 μm IVOCT system in air and water, respectively. (e) and (f) Quantitative analysis of penetration depth for two IVOCT systems in air and water. Scale bars are 1 mm.