FIG. 4.

Summary of results from the 5D MOBY mouse phantom simulation experiment. A spatially matching 2D slice is shown in each panel. (Columns) First 5 of 10 cardiac phases spanning ventricular systole through diastole (yellow labels: LA, left atrium; RA, right atrium; LV, left ventricle; RV, right ventricle). (Rows) “Expected” reconstruction results including the 10 ms integration time, weighted “FBP” reconstruction results, 5D reconstruction (“5D Recon.”) results using the proposed algorithm (Fig. 2), and absolute residuals (“|Residuals|”) for the 5D reconstruction results. The CT data are scaled in HU as shown. Note that, as shown, the residuals are amplified by a factor of three relative to the grayscale data. RMSE: Root-mean-square error metric averaged over all ten phases.