Integrated physiological flow simulator and pulse sequence monitoring system for MRI.
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.
Wong
Pauline
P
Department of Radiology, University of Cambridge, Addenbrooke's Hospital, Box 219, Cambridge CB2 0QQ, UK. pw255@cam.ac.uk
Graves
Martin J
MJ
Lomas
David J
DJ
D001011:Aorta / Q000503:physiopathology; D003199:Computer Systems; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D018810:Magnetic Resonance Angiography / Q000295:instrumentation / Q000379:methods; D011150:Popliteal Artery / Q000503:physiopathology; D011673:Pulsatile Flow