Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Dark lumen MR-Colonography: initial experience
Autore:
Lauenstein, TC; Herborn, CU; Vogt, FM; Gohde, SC; Debatin, JF; Ruehm, SG;
Indirizzi:
Univ Essen Gesamthsch Klinikum, Zent Inst Rontgendiagnost, D-45122 Essen, Germany Univ Essen Gesamthsch Klinikum Essen Germany D-45122 5122 Essen, Germany
Titolo Testata:
ROFO-FORTSCHRITTE AUF DEM GEBIET DER RONTGENSTRAHLEN UND DER BILDGEBENDEN VERFAHREN
fascicolo: 9, volume: 173, anno: 2001,
pagine: 785 - 789
SICI:
1438-9029(200109)173:9<785:DLMIE>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC-RESONANCE COLONOGRAPHY; CONVENTIONAL COLONOSCOPY; COLORECTAL-CANCER; LESIONS;
Keywords:
magnetic resonance imaging (MRI); virtual endoscopy; colon; contrast medias;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
15
Recensione:
Indirizzi per estratti:
Indirizzo: Lauenstein, TC Univ Essen Gesamthsch Klinikum, Zent Inst Rontgendiagnost, Hufelandstr 55,D-45122 Essen, Germany Univ Essen Gesamthsch Klinikum Hufelandstr 55 Essen Germany D-45122
Citazione:
T.C. Lauenstein et al., "Dark lumen MR-Colonography: initial experience", ROFO-F RONT, 173(9), 2001, pp. 785-789

Abstract

Purpose: The aim of this study was to assess a new strategy of MR colonography for the detection of colonic polyps/malignancy. The technique is basedon a rectal enema with water in combination with the intravenous application of a paramagnetic contrast agent. Methods: Twelve subjects were includedin this study either due to suspected colorectal tumors or for screening purposes. For MR colonography the colon was filled with approximately 3000 ml of tap water while Gadobenate dimeglumine (0.2 mmol/kg) was injected intravenously. A T1w GRE sequence was acquired before and 75 sec after the contrast administration only in prone position. Three patient underwent the "bright lumen" MRC as well. All MR examinations were performed at least five days prior to conventional colonoscopy and the results of both modalities were compared. Results: The colonic filling with water resulted in a homogeneously low signal throughout the colonic lumen in all twelve subjects. Intravenous injection of gadolinium caused avid enhancement of the colonic wall. Similarly lesions arising from the colonic wall enhanced avidly. Dark lumen MR colonography correctly identified five polyps in four patients. Brightlumen MRC showed in one patient false positive results. Conclusion: The new MR colonography concept based on a dark colonic lumen and a bright, contrast enhanced colonic wall turned out to be a promising alternative to the traditional MRC based on a bright lumen concept. The new technique suggests a higher accuracy in detecting polyps, a better evaluation of other parenchymal organs as well as a reduced time needed for data acquisition and analysis.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/10/20 alle ore 14:45:56