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FIGURE 3. Results of phantom studies confirming the accuracy of reorienting the long axis of the left ventricle for image registration (top: RAO-30°; bottom: LAO-60°). (A and B) QGS 3D surface maps with inner and outer cardiac walls generated by the conventional method (A) and after reorientation (B). (C) Reoriented 3D surface maps were superimposed on radiographic images at RAO-30° and LAO-60° views. (D) Changing the surface display allowed the colored 3D map to reflect the relative count distribution with the fused radiographic image.
