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Titolo:
Antral motility measurements by magnetic resonance imaging
Autore:
Marciani, L; Young, P; Wright, J; Moore, R; Coleman, N; Gowland, PA; Spiller, RC;
Indirizzi:
Univ Nottingham Hosp, Queens Med Ctr, Sch Med & Surg Sci, Div Gastroenterol, Nottingham NG7 2UH, England Univ Nottingham Hosp Nottingham England NG7 2UH tingham NG7 2UH, England Univ Nottingham, Sch Phys & Astron, Magnet Resonance Ctr, Nottingham NG7 2RD, England Univ Nottingham Nottingham England NG7 2RD , Nottingham NG7 2RD, England Univ Nottingham Hosp, Queens Med Ctr, Sch Med & Surg Sci, Div Surg, Nottingham NG7 2UH, England Univ Nottingham Hosp Nottingham England NG7 2UH tingham NG7 2UH, England
Titolo Testata:
NEUROGASTROENTEROLOGY AND MOTILITY
fascicolo: 5, volume: 13, anno: 2001,
pagine: 511 - 518
SICI:
1350-1925(200110)13:5<511:AMMBMR>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
AMBULATORY ANTRODUODENAL MANOMETRY; HUMANS; MR;
Keywords:
contraction frequency; EPI; gastric antrum; MRI; occlusion; speed;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Spiller, RC Univ Nottingham Hosp, Queens Med Ctr, Sch Med & Surg Sci, Div Gastroenterol, Nottingham NG7 2UH, England Univ Nottingham Hosp Nottingham England NG7 2UH 2UH, England
Citazione:
L. Marciani et al., "Antral motility measurements by magnetic resonance imaging", NEUROG MOT, 13(5), 2001, pp. 511-518

Abstract

Magnetic resonance imaging has been recently proposed as a promising, noninvasive technique to assess the motility of the gastric antrum. However, sofar the reproducibility and dependence on test meal composition has not been evaluated. In this study, snapshot echo-planar magnetic resonance imaging was used to measure the frequency, propagation speed and percentage occlusion of antral contractions in 28 healthy volunteers. They were fed either liquid (n=12), mixed liquid/solid (n=8) or mixed viscous/solid (n=8) nutrient (1350 kJ) test meals, and a total of 208 motility measurements were performed. No effect of meal type on antral motility parameters was observed. Antral contraction frequency was 3.0 +/- 0.2 min(-1) (mean +/- SD, n=164), propagation speed was 1.6 +/- 0.2 mm s(-1) (n=164) and the percentage occlusion was 58 +/- 14% (n=76). Overall, 21% of measurements did not provide useful antral motility data, because, in the supine position, the antrum was not filled by the test meal. Simple methods to overcome this and reduce scanning time to a minimum are proposed. The results show that the noninvasive magnetic resonance imaging evaluation of antral motility is accurate and reproducible and has potential to become a standard tool for such investigations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 18:16:45