RETROSPECTIVELY DETERMINING THE CENTER OF ROTATION OF A SCINTILLATION CAMERA DETECTOR FROM SPECT DATA ACQUIRED DURING A NUCLEAR MEDICINE STUDY

摘要

Two conjugate views of a patient are acquired during a SPECT nuclear medicine study. A common anatomical feature is identified in the views. Based on the differences in location of the common feature in the views, the center of rotation ("COR") of the detector during the study can be calculated after the study has been concluded. This COR can then be used during image reconstruction to determine the location at which each filtered view is backprojected. The resulting SPECT data is of higher quality because COR artifacts in the reconstructed image are reduced or eliminated.