Design and validation of a motion stage for in vitro MR experiments.
A computer-controlled motion stage was designed to facilitate motion studies and simulations of cardiac magnetic resonance (MR) experiments. The stage was constructed to move a phantom of up to 6 kg at velocities up to 15 cm/sec along a two-dimensional trajectory within an MR scanner. The operation of the motion stage was validated and found to be accurate to within 0.08 cm in displacement and 1.5 cm/sec in velocity (root-mean-square error). No image degradation was observed.J. Magn. Reson. Imaging 1999;10:972-977.
Zhou
Y
Y
Departments of Medical Physics and Radiology, University of Wisconsin-Madison, E3/311 Clinical Science Center, 600 Highland Avenue, Madison, Wisconsin 53792-3252, USA. yong.zhou@med.ge.com
Carroll
T J
TJ
Grist
T M
TM
Frayne
R
R
D016477:Artifacts; D002138:Calibration; D003198:Computer Simulation; D003199:Computer Systems; D003326:Coronary Circulation / Q000502:physiology; D011211:Electric Power Supplies; D004867:Equipment Design; D006321:Heart / Q000502:physiology*; D006801:Humans; D007089:Image Enhancement; D007091:Image Processing, Computer-Assisted; D019028:Magnetic Resonance Imaging, Cine / Q000295:instrumentation* / Q000379:methods; D009068:Movement; D009200:Myocardial Contraction / Q000502:physiology*; D019047:Phantoms, Imaging; D015203:Reproducibility of Results; D012815:Signal Processing, Computer-Assisted