7 MRI reconstruction
The magnetic resonance imaging (MRI) physics is quite different from that of transmission or emission imaging as we discussed in the previous chapters. This chapter first introduces the imaging physics of MRI, showing how the MRI signals are formed. We will see that the MRI signals are in the Fourier domain and the image reconstruction is achieved via the inverse Fourier transform.
7.1 The “M”
The MRI working principle is quite different from that of emission and transmission tomography. MRI is an image of “proton density” in a cross section of the patient. The data in MRI can be simplified as weighted plane integrals of the proton density function in that plane with “frequency”-dependent weighting functions.
In this ...
Get Medical Image Reconstruction, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
