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CT Scan Image reconstruction
- 1. COMPUTED TOMOGRAPHY IMAGE RECONSTRUCTION Presented By: Gunjan Patel (MS-Medical Software ) (B.E.-Biomedical Engg.) (PGQ-Quality Management)
- 7. Example:
- 13. 1. Filtered back projection (-) (-) (-) (+) (+) (+) Spatial Filter
- 15. 1. Filtered back projection f(x,y) f(x,y) P( t) P’( t)
- 17. Fourier Transform to Projection
- 18. Fourier Slice Theorem Ky Kx F(Kx,Ky) F[P( t)] P( t) f(x,y) t y x X-rays
- 20. From Projections to Image y x Ky Kx F -1 [F(Kx,ky)] f(x,y) P( t) F(Kx,Ky)
- 23. Queries !!!