MRI 1 Flashcards
Oscillating magnetic field
A magnetic field whose intensity changes over time
Magnetic resonance (MR)
The absorption of energy from a magnetic field that oscillates at a particular frequency.
Resonant frequency
The frequency of oscillation that provides maximum energy transfer to the system.
Transmitter coil
An electromagnetic coil that generates an oscillating magnetic field at the resonant frequency of atomic nuclei within a sample.
Detector coil
An electromagnetic coil that measures energy emitted back to the environment after its initial absorption by the sample.
Nuclear induction
The initial term for nuclear magnetic resonance effects as labeled by Bloch and colleagues
Nuclear magnetic resonance (NMR)
The measurable changes in magnetic properties of atomic nuclei induced by the application of an oscillating magnetic field at the resonant frequency of the nuclei.
Image
A visual of how one or more quantities vary over space.
Spatial gradients (G)
A magnetic field whose strength varies systematically over space.
Echo-Planar Imaging (EPI)
A technique that allows collection of an entire two-dimensional image by changing spatial gradients rapidly following a single electromagnetic pulse from a transmitter coil.
