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Titolo:
Multiphase-multistep gadolinium-enhanced MR angiography of the abdominal aorta and runoff vessels
Autore:
Schoenberg, SO; Londy, FJ; Licato, P; Williams, DM; Wakefield, T; Chenevert, TL;
Indirizzi:
Univ Michigan, Dept Radiol, Ann Arbor, MI 48109 USA Univ Michigan Ann Arbor MI USA 48109 Dept Radiol, Ann Arbor, MI 48109 USA German Canc Res Ctr, Dept Radiol, D-6900 Heidelberg, Germany German Canc Res Ctr Heidelberg Germany D-6900 D-6900 Heidelberg, Germany Univ Michigan, Dept Surg, Ann Arbor, MI 48109 USA Univ Michigan Ann ArborMI USA 48109 , Dept Surg, Ann Arbor, MI 48109 USA Gen Elect Med Syst, Milwaukee, WI USA Gen Elect Med Syst Milwaukee WI USA en Elect Med Syst, Milwaukee, WI USA
Titolo Testata:
INVESTIGATIVE RADIOLOGY
fascicolo: 5, volume: 36, anno: 2001,
pagine: 283 - 291
SICI:
0020-9996(200105)36:5<283:MGMAOT>2.0.ZU;2-P
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC-RESONANCE ANGIOGRAPHY; VASCULAR TREE STENOSES; PERIPHERAL ARTERIES; CLINICAL-EXPERIENCE; CONTRAST; TIME; SUBTRACTION; OPTIMIZATION; DISEASE;
Keywords:
gadolinium; MR angiography; abdominal aorta;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Life Sciences
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Schoenberg, SO Deutsch Krebsforschungszentrum, FSP Radiol E0103, Neuenheimer Feld 280, D-69120 Heidelberg, Germany Deutsch Krebsforschungszentrum Neuenheimer Feld 280 Heidelberg Germany D-69120
Citazione:
S.O. Schoenberg et al., "Multiphase-multistep gadolinium-enhanced MR angiography of the abdominal aorta and runoff vessels", INV RADIOL, 36(5), 2001, pp. 283-291

Abstract

RATIONALE AND OBJECTIVES. TO optimize three-dimensional gadolinium magnetic resonance angiography (3D-Gd-MRA) of the aorta and runoff vessels by addressing fundamentally different requirements for temporal and spatial resolution in a single semiautomated examination. METHODS, The technique was designed to obtain pure arterial-phase SD-Gd-MRangiograms with adequate spatial resolution for each station while avoiding incomplete enhancement due to delayed filling vessels as well as venous overlay. During gadolinium-chelate infusion, a breath-held multiphase 3D-Gd-MRA scan was initiated in the aorta by automatic triggering, followed by automatic table movement, The acquisition was tailored to the vessels of interest by tilting of the 3D volumes, A spatial resolution of 1.7 x 13 x 0.8 mm in the calves was achieved by use of elliptical-centric k-space reordering. Signal-to-noise ratio was maximized with a 12-element peripheral vascular coil. Twelve patients with peripheral vascular disease were studied,RESULTS. In cases of aortic occlusive disease (n = 2), dissections (n = 3), or aneurysms (n = 4), substantially delayed fill-in of reconstituted arteries, false lumens, or aneurysmal segments occurred, which was detected only on the later 3D-Gd-MRA phase. High-resolution arterial-phase scans in thecalves were obtained, with only one case of substantial venous overlay. Correlation to digital subtraction angiography revealed excellent agreement of pathological findings,CONCLUSIONS, Multiphase-multistep 3D-Gd-MRA reduces the limitations of standard 3D-Gd-MRA techniques with respect to anatomic coverage, spatial resolution, and nonuniform arterial vessel enhancement.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 11:35:19