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Titolo:
Volumetric multishot echo-planar spectroscopic imaging
Autore:
Tyszka, JM; Mamelak, AN;
Indirizzi:
City Hope Natl Med Ctr, Beckman Res Inst, Div Mol Med, Duarte, CA 91010 USA City Hope Natl Med Ctr Duarte CA USA 91010 Mol Med, Duarte, CA 91010 USA City Hope Natl Med Ctr, Div Surg, Duarte, CA 91010 USA City Hope Natl Med Ctr Duarte CA USA 91010 Div Surg, Duarte, CA 91010 USA
Titolo Testata:
MAGNETIC RESONANCE IN MEDICINE
fascicolo: 2, volume: 46, anno: 2001,
pagine: 219 - 227
SICI:
0740-3194(200108)46:2<219:VMESI>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
AUTOMATED SPECTRAL-ANALYSIS; TEMPORAL-LOBE EPILEPSY; PROTON NMR-SPECTRA; BRAIN-TUMORS; SPATIAL-RESOLUTION; METABOLIC RESPONSE; MAGNETIC-RESONANCE; PROSTATE-CANCER; WATER; MRSI;
Keywords:
magnetic resonance imaging; echo-planar imaging; spectroscopic imaging; phase correction; human brain metabolism;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Tyszka, JM City Hope Natl Med Ctr, Beckman Res Inst, Div Mol Med, Clin ResBldg L030,1500 E Duarte Rd, Duarte, CA 91010 USA City Hope Natl Med Ctr Clin Res Bldg L030,1500 E Duarte Rd Duarte CA USA 91010
Citazione:
J.M. Tyszka e A.N. Mamelak, "Volumetric multishot echo-planar spectroscopic imaging", MAGN RES M, 46(2), 2001, pp. 219-227

Abstract

Rapid volumetric magnetic resonance spectroscopic imaging (MRSI) is potentially of great relevance to the diagnosis and treatment of focal cerebral diseases such as cancer and epilepsy. A strategy for volumetric multishot echo-planar spectroscopic imaging (MEPSI) is described which allows whole-brain metabolite mapping in approximately 20 min. A multishot trajectory is used in both the spatial and temporal domains which reduces the accumulated phase during each echo train and tolerates conventional Fourier reconstruction without regridding. Also described is a generalized correction for phasediscontinuities arising from the multishot acquisition of the time domain,which is independent of the spatial k-space trajectory and is therefore also applicable to multishot spiral MRSI. Whole-brain, lipid-suppressed MEPSIdata were acquired from five normal subjects. The mean signal-to-noise ratios (SNRs) (+/- SE) for the n-acetylaspartate (NAA), choline (Cho), and creatine (Cr) maps across all subjects were 21.3 +/- 1.8, 11.7 +/- 0.6, and 9.2 +/- 0.6, respectively, with a computed voxel size of 2.33 ml. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 07:56:55