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Titolo:
Validation of antroduodenal motility measurements made by echo-planar magnetic resonance imaging
Autore:
Wright, J; Evans, D; Gowland, P; Mansfield, P;
Indirizzi:
Univ Nottingham, Dept Surg, Nottingham NG7 2RD, England Univ Nottingham Nottingham England NG7 2RD , Nottingham NG7 2RD, England Univndottingham, Dept Phys, Magnet Resonance Ctr, Nottingham NG7 2RD, Engla Univ Nottingham Nottingham England NG7 2RD tr, Nottingham NG7 2RD, Engla Standrtholomews & Royal London Hosp, Sch Med, GI Sci Res Unit, London, Engl St Bartholomews & Royal London Hosp London England s Unit, London, Engl
Titolo Testata:
NEUROGASTROENTEROLOGY AND MOTILITY
fascicolo: 1, volume: 11, anno: 1999,
pagine: 19 - 25
SICI:
1350-1925(199902)11:1<19:VOAMMM>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
INTRAGASTRIC DISTRIBUTION; PYLORIC MOTILITY; MEAL; POSTURE; HUMANS;
Keywords:
antroduodenal; echo-planar imaging (EPI); magnetic resonance imaging (MRI); manometry; motility;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Wright, J Univ Nottingham Hosp, Dept Surg, Nottingham NG7 2UH, England Univ Nottingham Hosp Nottingham England NG7 2UH 7 2UH, England
Citazione:
J. Wright et al., "Validation of antroduodenal motility measurements made by echo-planar magnetic resonance imaging", NEUROG MOT, 11(1), 1999, pp. 19-25

Abstract

Echo planar imaging, a development of magnetic resonance imaging, can produce snapshot images of the stomach and antroduodenal segment in as little as 64 msec and can be more useful than conventional techniques when assessing motility. The aim of this study was to compare antroduodenal motility measured by simultaneous perfused tube manometry and echo planar imaging. Ten volunteers were studied following the ingestion of 500 mt water or 500 mt porridge. Antroduodenal images, with acquisition times of 130 msec, were taken at 3-sec intervals, synchronized with motility traces and presented as asplit-screen video. This allowed direct visual comparison of gastric wall movement and motility to be made. Contractions were confined to either the stomach or the duodenum or propagated across the antroduodenal segment. Over 4550 images were available for analysis. A larger number of propagated contractions were recorded with echo planar imaging in both water (P = 0.03) and food (P = 0.02) groups, whereas manometry detected a greater number of isolated duodenal pressure waves (P = 0.005). The contraction rate for water and food studies was similar, but direct visualization indicated that themanometric technique under-detected propagated events. The ability of echoplanar imaging to record antroduodenal contractile activity provides a newinsight into the Pole of occlusive and nonocclusive contractions during gastric emptying.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 10:15:26