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Titolo:
An exact form for the magnetic field density of states for a dipole
Autore:
Cheng, YCN; Haacke, EM; Yu, YJ;
Indirizzi:
MRI Inst Biomed Res, Brentwood, MO 63144 USA MRI Inst Biomed Res Brentwood MO USA 63144 d Res, Brentwood, MO 63144 USA Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA Case WesternReserve Univ Cleveland OH USA 44106 Cleveland, OH 44106 USA
Titolo Testata:
MAGNETIC RESONANCE IMAGING
fascicolo: 7, volume: 19, anno: 2001,
pagine: 1017 - 1023
SICI:
0730-725X(200109)19:7<1017:AEFFTM>2.0.ZU;2-F
Fonte:
ISI
Lingua:
ENG
Soggetto:
SPIN-ECHO; SUSCEPTIBILITY; BRAIN;
Keywords:
density of states; susceptibility effects; signal dephasing;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Cheng, YCN MRI Inst Biomed Res, 8706 Manchester Rd,Suite 102, Brentwood, MO 63144 USA MRI Inst Biomed Res 8706 Manchester Rd,Suite 102 Brentwood MO USA 63144
Citazione:
Y.C.N. Cheng et al., "An exact form for the magnetic field density of states for a dipole", MAGN RES IM, 19(7), 2001, pp. 1017-1023

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 onlyin a limited interval of time. Otherwise, it has a quadratic dependence ontime for short echo times and an oscillatory decaying behavior for long echo times. (C) 2001 Elsevier Science Inc. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/04/20 alle ore 20:51:31