Title :
A Low-Cost Multichannel Spectrometer for Magnetic Resonance Imaging
Author :
Tang, Weinan ; Wang, Weimin
Author_Institution :
Inst. of Quantum Electron., Peking Univ., Beijing, China
Abstract :
A low-cost multichannel spectrometer is proposed for magnetic resonance imaging. There are three distinct features of the instrument: (1) the scalable parallel acquisition with extension to 16 channels is achieved upon high-speed, wideband digital downconverters (DDCs). (2) high frequency range up to 400MHz is allowed by using two quadrature digital upconverters (QDUCs) as a radio-frequency (RF) source and a local oscillator, respectively. (3) the design is based on a system on chip (SOC) integration with PowerPC architecture. Besides, by combining field programmable gate array (FPGA) and digital signal processor (DSP) technique, the spectrometer is built in a digital manner with high performance and accuracy. The device consists of inexpensive and highly-integrated components which make it low-cost and compact. The spectrometer has been successfully designed and demonstrated by the experimental result.
Keywords :
biomedical MRI; biomedical electronics; biomedical equipment; field programmable gate arrays; magnetic resonance spectrometers; signal processing; system-on-chip; FPGA; SOC; digital signal processor technique; field programmable gate array; highly-integrated components; local oscillator; low-cost multichannel spectrometer; magnetic resonance imaging; quadrature digital upconverters; radiofrequency source; scalable parallel acquisition; system on chip integration; wideband digital down converters; Frequency modulation; Magnetic resonance imaging; Radio frequency; Random access memory; Receivers; Resonant frequency;
Conference_Titel :
Bioinformatics and Biomedical Engineering, (iCBBE) 2011 5th International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-5088-6
DOI :
10.1109/icbbe.2011.5780450
