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Titolo:
Partial discrete Fourier transform (PDFT) multiband encoding
Autore:
Cunningham, CH; Stainsby, JA; Wright, GA; Wood, ML;
Indirizzi:
Univ Toronto, Dept Med Biophys, Toronto, ON, Canada Univ Toronto Toronto ON Canada to, Dept Med Biophys, Toronto, ON, Canada Sunnybrook & Womens Coll Hlth Sci Ctr, Toronto, ON, Canada Sunnybrook & Womens Coll Hlth Sci Ctr Toronto ON Canada onto, ON, Canada Univ Toronto, Dept Med Imaging, Toronto, ON, Canada Univ Toronto Toronto ON Canada to, Dept Med Imaging, Toronto, ON, Canada
Titolo Testata:
MAGNETIC RESONANCE IN MEDICINE
fascicolo: 1, volume: 45, anno: 2001,
pagine: 118 - 127
SICI:
0740-3194(200101)45:1<118:PDFT(M>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
MRI; RECONSTRUCTION; EXCITATION; ALGORITHM; ARTIFACTS; TIME;
Keywords:
multiband selective excitation; Hadamard encoding; RF pulse; cardiac imaging; spatial encoding;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Cunningham, CH Sunnybrook & Womens Coll Hlth Sci Ctr, 2075 Bayview Ave, N York, ON M4N 3M5, Canada Sunnybrook & Womens Coll Hlth Sci Ctr 2075 BayviewAve N York ON Canada M4N 3M5
Citazione:
C.H. Cunningham et al., "Partial discrete Fourier transform (PDFT) multiband encoding", MAGN RES M, 45(1), 2001, pp. 118-127

Abstract

For conventional multiband encoding techniques such as Hadamard encoding, scan time scales linearly with the number of slices encoded simultaneously In this work, a new multiband encoding technique called partial discrete Fourier transform (PDFT) encoding is introduced, which overcomes this restriction. This technique incorporates the principle of partial Fourier imaging,allowing the tradeoff of SNR and imaging time without changing the number of slices. The theory behind PDFT encoding and its inherent sensitivity to phase errors are outlined. The theory was Validated through simulations, showing that phase errors result in degraded slice localization. The feasibility of PDFT encoding of 12 slices was tested with experimental excitation profile measurements and heart images of a human subject using commercial MRI equipment. Imaging time was reduced to 66% with SNR reduced to 82%, Magn Reson Med 45: 118-127, 2001. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/01/20 alle ore 03:31:27