Explain why an fft shift needs to be carried out on kk-space

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Explain why an FFT shift needs to be carried out on kk-space before and after the iFFT is applied. What is the purpose of the FFT shift? Where are low-frequency components located in kk-space? What happens if you only apply the FFT shift before, but not after performing the iFFT on the kk-space? (explain this with figures)

Reference no: EM133199281

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