Patent ID: 7570733

Claim:
A CT scanner comprising: an x-ray source mounted on a rotatable gantry and configured to project x-rays at a subject to be scanned and an x-ray detector assembly configured to detect x-rays projected by the x-ray source and attenuated by the subject; and a computer programmed to: define an imaging volume to be imaged in a pair of neighboring partial-scans; cause acquisition of a first set of CT data from a portion of the imaging volume in a first partial-scan; cause acquisition of a second set of CT data from another portion of the imaging volume in a second partial-scan; control a rotational speed of the gantry based on a measured cardiac motion such that the acquisition of the first and second sets of CT data are synchronized with the measured cardiac motion and such that center angles of the first and second partial-scans differ by approximately π radians; combine the first and the second sets of CT data into a composite dataset having a spatial coverage of the imaging volume; and reconstruct a CT image of the imaging volume from the composite dataset.