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Image Reconstruction (Backprojection (Filtered Backprojection (USES HIGH…
Image Reconstruction
Backprojection
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Filtered Backprojection
each projection uses a high pass filter to pre-sharper the edges and suppress the low frequency content
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CT
1) Fan Beam
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so take parallel images and combine, to obtain all views
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2) Helical Scan
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INTERPOLATION fills missing data,and deals with low number of views for each z-coordinate
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