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  Indian J Med Microbiol
 

Figure 1: (a and b) CT data are acquired in fan beam geometry where individual rays represent transmitted photon intensities from multiple projections around patient. (c and d) These data can be reformatted into orthogonal geometry similar to that used for SPECT

Figure 1: (a and b) CT data are acquired in fan beam geometry where individual rays represent transmitted photon intensities from multiple projections around patient. (c and d) These data can be reformatted into orthogonal geometry similar to that used for SPECT