MRI k-Space
An MRI scanner never measures an image: magnetic field gradients encode spatial position as the frequency and phase of the NMR signal, so each readout fills one trajectory through k-space — the 2D Fourier transform of the image — and an inverse FFT reconstructs the anatomy.
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An MRI scanner never measures an image: magnetic field gradients encode spatial position as the frequency and phase of the NMR signal, so each readout fills one trajectory through k-space — the 2D Fourier transform of the image — and an inverse FFT reconstructs the anatomy.
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