In which I attempt to describe spin...
In physics, spin is the a general term for angular momentum (it's rotation, like that of the Earth) of a particle.* In MRI we use a slightly more specific definition.
In which I explain the very basics of MRI...
Nuclear Magnetic Resonance (NMR) allows us to detect a signal due to a fundamental quantum property of atoms - spin (which I will explain in an upcoming post). Magnetic Resonance Imaging (MRI) uses these same principles to obtain images of (usually) hydrogen atoms in a substance/tissue.
(N)MRI is a non-invasive, non-ionising, imaging modality and is widely used in hospitals worldwide. What does all that mean?