1. A non-transitory computer-readable medium embodying instructions executable by machine to perform operations for data reconstruction comprising: performing a first four-dimensional reconstruction of time-varying data to generate a four-dimensional Digital Subtraction Angiography (DSA) dataset of an object of interest; identifying a volume of interest in the four-dimensional DSA dataset; extracting the volume of interest from the four-dimensional DSA dataset to generate a volume array; refining the volume of interest based on the volume array to generate a refined dataset; and performing a second four-dimensional reconstruction based on the refined dataset to generate a zoomed-in four-dimensional representation of the volume of interest.