A cross section of a sample of protons within a 25.6 cm×25.6 cm square is being imaged by an MR scanner. We want to reconstruct an image with matrix size 256×256. We use the Nyquist sampling rate in the u and v directions.
(a) What is the extent of the object in the diagonal direction? How many samples are there in each (main) diagonal direction?
(b) What is the Fourier space sampling rate for the diagonal directions?
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