A GTO speed-up inverter for fast-scan magnetic resonance imaging

Autor:	Steven Peter Souza, R.L. St. Peters, Peter B. Roemer, Otward M. Mueller, John Norton Park
Rok vydání:	2003
Předmět:	Engineering Speedup medicine.diagnostic_test business.industry ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Fast scanning Thyristor Magnetic resonance imaging Power (physics) Optics medicine Electronic engineering Inverter business Echo planar Electronic systems
Zdroj:	[Proceedings] APEC '92 Seventh Annual Applied Power Electronics Conference and Exposition.
DOI:	10.1109/apec.1992.228371
Popis:	Magnetic resonance imaging (MRI) machines require unique high-power electronic systems for the generation of pulsed B gradient fields, especially for echo planar MRI, where images are taken in 25-30 ms instead of minutes. The speedup inverter described has been implemented with gate turn-off thyristors (GTOs). A novel nonresonant circuit combines the advantages of high-efficiency switch-mode power conversion techniques for the generation of megawatt pulses. An order-of-magnitude increase in available gradient power has been achieved with excellent fidelity and stability. >
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::23f3eab52f21dea8912974e170635e8b https://doi.org/10.1109/apec.1992.228371 Zobrazit plný text záznamu