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Titolo:
In vivo intravoxel incoherent motion measurements in the human placenta using echo-planar imaging at 0.5 T
Autore:
Moore, RJ; Issa, B; Tokarczuk, P; Duncan, KR; Boulby, P; Baker, PN; Bowtell, RW; Worthington, BS; Johnson, IR; Gowland, PA;
Indirizzi:
Univ Nottingham, Sch Phys & Astron, Magnet Resonance Ctr, Nottingham NG7 2RD, England Univ Nottingham Nottingham England NG7 2RD , Nottingham NG7 2RD, England Univ Nottingham, City Hosp, Nottingham NG7 2RD, England Univ Nottingham Nottingham England NG7 2RD , Nottingham NG7 2RD, England
Titolo Testata:
MAGNETIC RESONANCE IN MEDICINE
fascicolo: 2, volume: 43, anno: 2000,
pagine: 295 - 302
SICI:
0740-3194(200002)43:2<295:IVIIMM>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
CLASSICAL PERFUSION; DIFFUSION; IVIM; BRAIN;
Keywords:
IVIM; human placenta; EPI; optimization; PGSE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Gowland, PA Univ Nottingham, Sch Phys & Astron, Magnet Resonance Ctr, Nottingham NG7 2RD, England Univ Nottingham Nottingham England NG7 2RD NG7 2RD, England
Citazione:
R.J. Moore et al., "In vivo intravoxel incoherent motion measurements in the human placenta using echo-planar imaging at 0.5 T", MAGN RES M, 43(2), 2000, pp. 295-302

Abstract

This paper presents the first in vivo measurements of intravoxel incoherent motion in the human placenta, obtained using the pulsed gradient spin echo (PGSE) sequence. The aims of this study were two-fold. The first was to provide an initial estimate of the values of the IVIM parameters in this organ, which are currently unknown, The second aim was then to use these results to optimize the sequence timings for future studies. The moving blood fraction (f), diffusion coefficient (D), and pseudo-diffusion coefficient (D*) were measured. The average value of f was 26 +/- 6 % (mean +/- SD), D was1.7 +/- 0.5 x 10(-3) mm(2)/sec, and D* was 57 +/- 41 x 10(-3) mm(2)/sec. For the optimized values of b, the expected percentage uncertainty in the fitted values of f, D, and D* for the placenta were sigma f/f = 14.9%, sigma D/D = 14.3%, sigma D*/D* = 44.9%, for an image signal-to-noise of 20:1, anda total imaging time of 800 sec. (C) 2000 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 18:36:35