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Title of article :
An exact form for the magnetic field density of states for a dipole
Author/Authors :
Cheng، نويسنده , , Yu-Chung N. and Haacke، نويسنده , , E.Mark and Yu، نويسنده , , Ying-Jian، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Pages :
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Abstract :
We present an analytical form for the density of states for a magnetic dipole in the center of a spherical voxel. This analytic form is then used to evaluate the signal decay as a function of echo time for different volume fractions and susceptibilities. The decay can be considered exponential only in a limited interval of time. Otherwise, it has a quadratic dependence on time for short echo times and an oscillatory decaying behavior for long echo times.
Keywords :
Density of states , Susceptibility effects , Signal dephasing
Journal title :
Magnetic Resonance Imaging
Journal title :
Magnetic Resonance Imaging
Serial Year :
Link To Document :