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Titolo:
A multielement RF coil for MRI guidance of interventional devices
Autore:
Zhang, Q; Wendt, M; Aschoff, AJ; Lewin, JS; Duerk, JL;
Indirizzi:
Case Western Reserve Univ, Dept Radiol, Cleveland, OH 44106 USA Case Western Reserve Univ Cleveland OH USA 44106 Cleveland, OH 44106 USA
Titolo Testata:
JOURNAL OF MAGNETIC RESONANCE IMAGING
fascicolo: 1, volume: 14, anno: 2001,
pagine: 56 - 62
SICI:
1053-1807(200107)14:1<56:AMRCFM>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
MAGNETIC-RESONANCE; TRACKING;
Keywords:
interventional MRI; tip tracking; micro RF coil design; MR guidance; device visualization;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Duerk, JL Univ Hosp Cleveland, Dept Radiol MRI, 11100 Euclid Ave, Cleveland, OH 44106 USA Univ Hosp Cleveland 11100 Euclid Ave Cleveland OH USA 44106 USA
Citazione:
Q. Zhang et al., "A multielement RF coil for MRI guidance of interventional devices", J MAGN R I, 14(1), 2001, pp. 56-62

Abstract

Accurate localization of minimally invasive devices is critical to the success of interventional procedures. Device orientation and tip position are two of the most important pieces of information needed to define device location for magnetic resonance imaging (MRI)-guided interventional procedures. While a single one-element micro coil incorporated into an interventionaldevice has proven to be effective in some applications, it can only supplytip position Information. However, multiple positions on the device are necessary to also determine its orientation. For this purpose, a novel singlemicro coil design with three separate winding elements that provides both the device orientation and tip position is described In this study. Definition of MR scan planes, by using the device orientation and the target tissue location, permits automatic tracking of the insertion of the device. Furthermore, devices that include this coil design are permitted to bend to a limited extent. This makes the micro coil design appropriate for many flexible interventional devices. Reliable near-real-time tracking of three pointson an interventional device is demonstrated on a 0.2T MRI system with modest gradient performance. Phantom and in vivo animal experiments are used todemonstrate the utility of this new coil design. (C) 2001 Wiley-Liss, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/01/20 alle ore 22:12:22