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Integrated physiological flow simulator and pulse sequence monitoring system for MRI
Pauline Wong1, Martin J Graves, David J Lomas
1Department of Radiology, University of Cambridge, Addenbrooke's Hospital, Box 219, Cambridge CB2 0QQ, UK. pw255@cam.ac.uk
Abstract:
A compact flow simulator for generating accurate pulsatile flow in a clinical magnetic resonance imaging (MRI) environment has been developed and integrated with a data acquisition (DAQ) system for recording scanner system activity and physiological waveforms. The flow simulator is relatively inexpensive, easy to construct and is controlled from a standard PC. The flow simulator is robust to repeated disassembly and reassembly (normalised cross-correlation 0.97) and generates accurate pulsatile flow (normalised cross-correlation 0.94). The DAQ system was used to monitor a standard MRI pulse sequence used in MR angiography and latent delays in the scanner gating subsystem.
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