Figure 2.

Sagittal views of ¹⁸F-NaF microPET and microCT of human carotid plaques. (A, D, G) PET areas with ¹⁸F-NaF uptake. (B, E, H) CT images showing calcification. In image B only one small calcification can be seen in the areas of ¹⁸F-NaF uptake. (C, F, I) Fused images. Volumes of interest are drawn around CT calcification areas (white calcification, pink line). The relatively large calcifications (white arrows) show the most intense ¹⁸F-NaF uptake at their surface. In the smaller calcifications this cannot be observed due to the limited resolution. Scale PET images in %Inc/g, scale CT images in HU