Patent ID: 9025846
Filing Date: 2015-05-05
Classification: G06T

Abstract:
1. A system that facilitates using sparse data reconstruction for gated computed tomography imaging, including: a CT scanner that includes a rotating gantry with an X-ray source and a flat panel X-ray detector, and that performs a slow CT scan of a heart in a patient in order to generate a plurality of sets of projection image data while rotating the gantry continuously around the patient, wherein the CT scanner collects sparse projection data over a plurality of short arc segments corresponding to phases of multiple physiological cycles during a 360° revolution around the patient; a patient monitoring device that generates physiological cycle phase information; and a processor that: sorts the projection image data by a plurality of physiological cycle phases such that the data for each physiological cycle phase spans a plurality of short arc segments separated by long arc segments during which data is not collected, the long arc segments being longer than the short arc segments; executes a sparse data reconstruction algorithm and reconstructs an image of each of the physiological cycle phases, each image being reconstructed over the plurality of short arc segments corresponding to the physiological cycle phase during a plurality of physiological cycles.