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Titolo:
Pulmonary MR angiography with contrast agent at 4 Tesla: A preliminary result
Autore:
Uematsu, H; Dougherty, L; Takahashi, M; Ohno, Y; Nakatsu, M; Song, HK; Ferrari, VA; Gefter, WB; Schnall, MD; Hatabut, H;
Indirizzi:
Univ Penn, Med Ctr, Dept Radiol, Philadelphia, PA 19104 USA Univ Penn Philadelphia PA USA 19104 pt Radiol, Philadelphia, PA 19104 USA Univ Penn, Med Ctr, Dept Med, Philadelphia, PA 19104 USA Univ Penn Philadelphia PA USA 19104 Dept Med, Philadelphia, PA 19104 USA
Titolo Testata:
MAGNETIC RESONANCE IN MEDICINE
fascicolo: 5, volume: 46, anno: 2001,
pagine: 1028 - 1030
SICI:
0740-3194(200111)46:5<1028:PMAWCA>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
LUNG PARENCHYMA; BRAIN;
Keywords:
pulmonary vasculature; magnetic resonance imaging; high-field MRI; contrast agent; pulmonary MRA;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
14
Recensione:
Indirizzi per estratti:
Indirizzo: Hatabut, H Univ Penn, Med Ctr, Dept Radiol, 3600 Market St,Suite 370, Philadelphia, PA 19104 USA Univ Penn 3600 Market St,Suite 370 Philadelphia PA USA 19104 SA
Citazione:
H. Uematsu et al., "Pulmonary MR angiography with contrast agent at 4 Tesla: A preliminary result", MAGN RES M, 46(5), 2001, pp. 1028-1030

Abstract

In this study, pulmonary MR angiography (MRA) using a tailored coil at 4 Tesla in conjunction with an intravenous injection of contrast agent is described. Three-dimensional gradient-echo images were obtained during the intravenous injection of 0.05, 0.1, and 0.2 mmol/kg body weight of gadodiamide to investigate the signal enhancement effect of the contrast agent in pulmonary arteries qualitatively and quantitatively. In the qualitative analysis, the subsegmental branches were visualized on every dose. In the quantitative analysis, the average contrast-to-noise ratios (CNRs) of the main pulmonary arteries increased in a dose-dependent manner. However, the CNRs of segmental arteries did not increase as the dose of contrast agent increased, as observed at 1.5 Tesla MRI. These observations demonstrate the feasibility of delineating the pulmonary vasculature using a contrast agent; however,our results also suggest possible high-field-related disabilities that need to be overcome before high-field (greater than or equal to4 Tesla) MRI can be used to full advantage. (C) Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 06:31:59