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Flashcards in MRI 1 Deck (10)
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1

Oscillating magnetic field

A magnetic field whose intensity changes over time

2

Magnetic resonance (MR)

The absorption of energy from a magnetic field that oscillates at a particular frequency.

3

Resonant frequency

The frequency of oscillation that provides maximum energy transfer to the system.

4

Transmitter coil

An electromagnetic coil that generates an oscillating magnetic field at the resonant frequency of atomic nuclei within a sample.

5

Detector coil

An electromagnetic coil that measures energy emitted back to the environment after its initial absorption by the sample.

6

Nuclear induction

The initial term for nuclear magnetic resonance effects as labeled by Bloch and colleagues

7

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.

8

Image

A visual of how one or more quantities vary over space.

9

Spatial gradients (G)

A magnetic field whose strength varies systematically over space.

10

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.