Dynamic volume scanning for CT scanners

摘要: The radiation source (22) rotates around a patient on couch (30) as the is advanced through an examination region (14). Radiation detectors (24) detect that has passed along rays of plurality fan shaped views. Each view identifiable by its angular position and longitudinal in spiral each ray fan. An interpolator (46) interpolates views collected over more than two revolutions path using interpolation function (FIGS. 1A-1D). A set interpolated reconstructed (54) into series image representations representing parallel planar slices imaged volume. In some reconstructions, particularly reconstructions which 180° based reconstruction algorithm used or energy x-ray beam varied, filter varied from to within view. projection can also be order emphasize structures various axes subject. cardiac other physiological condition monitor (90) monitors for movement subject so one rotational speed source, table, beam, accordingly.