Song Y, et al. - Aim of this research was to introduce a novel method to reconstruct high definition vascular images using COnstrained Data Extrapolation (CODE) and evaluate its capability in estimating vessel area and stenosis. The outcomes displayed that COnstrained Data Extrapolation (CODE) was capable of producing sharp sub-voxel edges and accurately estimating stenosis to within 5% for clinically relevant studies of vessels with a width of at least 3 pixels in the low resolution images.