Medusa: a scalable MR console using USB.
IEEE Trans Med Imaging
; 31(2): 370-9, 2012 Feb.
Article
em En
| MEDLINE
| ID: mdl-21954200
ABSTRACT
Magnetic resonance imaging (MRI) pulse sequence consoles typically employ closed proprietary hardware, software, and interfaces, making difficult any adaptation for innovative experimental technology. Yet MRI systems research is trending to higher channel count receivers, transmitters, gradient/shims, and unique interfaces for interventional applications. Customized console designs are now feasible for researchers with modern electronic components, but high data rates, synchronization, scalability, and cost present important challenges. Implementing large multichannel MR systems with efficiency and flexibility requires a scalable modular architecture. With Medusa, we propose an open system architecture using the universal serial bus (USB) for scalability, combined with distributed processing and buffering to address the high data rates and strict synchronization required by multichannel MRI. Medusa uses a modular design concept based on digital synthesizer, receiver, and gradient blocks, in conjunction with fast programmable logic for sampling and synchronization. Medusa is a form of synthetic instrument, being reconfigurable for a variety of medical/scientific instrumentation needs. The Medusa distributed architecture, scalability, and data bandwidth limits are presented, and its flexibility is demonstrated in a variety of novel MRI applications.
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1
Base de dados:
MEDLINE
Assunto principal:
Transdutores
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Redes de Comunicação de Computadores
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Processamento de Sinais Assistido por Computador
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Software
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Imageamento por Ressonância Magnética
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Interpretação de Imagem Assistida por Computador
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Magnetismo
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article