Symbol | Definition |
---|---|
Å | Angstrom (10^{-10} meters) |
B_{o} | Static magnetic field |
B_{1} | The radio frequency magnetic field |
C | Contrast |
C | Electrical eapacitance |
COSY | 2-D correlated spectroscopy |
CW | Continuous wave |
D | Deuterium |
D | Diffusion coefficient |
Chemical shift | |
Magnetic field gradient pulse width | |
Magnetic field gradient pulse separation | |
Chemical shift | |
E | Energy |
f | Frequency |
FID | Free induction decay |
FT | Fourier transform |
G_{i } | Magnetic field gradient in the i direction |
Gyromagnetic ratio | |
h | Planck's constant |
H | Hydrogen |
IFT | Inverse Fourier transform |
IM | Imaginary part of a complex number |
J | Joule |
J | Spin-spin coupling constant |
k | Boltzmann constant |
k | kilo (10^{3}) |
k | Proportionality constant |
K | Kelvin temperature |
L | Electrical Inductance |
m | milli (10^{-3}) |
M | mega (10^{6}) |
micro (10^{-6}) | |
M_{o} | Equilibrium magnetization |
M_{X } | X component of magnetization |
M_{X'} | X' component of magnetization |
M_{Y } | Y component of magnetization |
M_{Y'} | Y' component of magnetization |
M_{Z } | Z component of magnetization |
M_{XY } | Transverse component of magnetization |
MRI | Magnetic resonance imaging |
Resonance frequency in Hertz | |
N | Number of averages |
N^{+} | Spin population in low energy state |
N^{-} | Spin population in high energy state |
NMR | Nuclear magnetic resonance |
Resonance frequency in radians per second | |
Ohm, impedance | |
3.14159... | |
Phase angle | |
ppm | Parts per million |
R_{1} | Spin-lattice relaxation rate |
RE | Real part of a complex number |
RF | Radio frequency |
s | Second |
Chemical shielding constant | |
SAR | Specific absorption rate |
Sinc | Sin(x)/x |
SNR | Signal-to-noise ratio |
T | Temperature |
T | Tesla |
T_{1 } | Spin-lattice relaxation time |
T_{2 } | Spin-spin relaxation time |
T_{2}* | T_{2} star |
T_{2inhomo } | Inhomogeneous T_{2 } |
Rotation angle | |
TE | Echo Time |
TI | Inversion Time |
TR | Repetition Time |
X | X axis in laboratory coordinate system |
X' | Rotating frame X axis |
Y | Y axis in laboratory coordinate system |
Y' | Rotating frame Y axis |
Z | Z axis in laboratory coordinate system |
1-D | One-dimensional |
2-D | Two-dimensional |
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