Symbia Head Position Correction: Apparatus and Method

Abstract

A system and method provide for more accurate SPECT/CT image registration. CT data is utilized to establish a global spatial coordinate system of a common test phantom. The common test phantom is then used to obtain a set of point source nuclear images. Three-dimensional CT point source data is mapped to a two-dimensional image plane of corresponding point source data, to obtain a pair of intersecting projection cones that are used to obtain a set of detector head position correction parameters to correct detector head positioning in the CT coordinate system when obtaining SPECT projection images of the same object.

1 . A test phantom structure for calibration of a hybrid medical imaging apparatus to co-register a nuclear medical image with a medical image of a different modality, both obtained with said hybrid medical imaging apparatus, comprising a structure supporting a plurality of point source isotopes at locations such that lines connecting any two pairs of said point source isotopes will be skewed with respect to each other. 
   
   
       2 . The test phantom structure as set forth in  claim 1 , wherein said hybrid medical imaging apparatus is a SPECT/CT imaging apparatus. 
   
   
       3 - 7 . (canceled)