Patent ID: 6266553
Filing Date: 2001-07-24
Classification: A61B,G01N

Abstract:
A computed tomography apparatus comprising:means for conducting a radiological spiral scanning of an examination volume in which an examination subject is disposed, thereby obtaining spiral scan data;means for obtaining an ECG signal, containing R-waves, from a heart of a subject in said examination volume over a plurality of cardiac cycles, said ECG signal, consisting of periodic signal portions respectively representing only low-motion phases of the heart, each low-motion phase being disposed between two immediately successive R-waves in said ECG signal;means for controlling the spiral scanning of said examination volume dependent on said ECG signal for obtaining said spiral scan data in a plurality of successive scanning datasets respectively obtained only during said low-motion phases; andmeans for producing images of the heart from said scanning datasets, with each image being produced using only one of said datasets respectively.