Surgery – Truss – Pad
Patent
1990-11-26
1993-03-23
Cohen, Lee S.
Surgery
Truss
Pad
324309, A61B 5055
Patent
active
051955253
ABSTRACT:
Motion and deformation is assessed and imaged using phase contrast magnetic resonance imaging for determining velocity of a plurality of regions at a plurality of frames during a period of interest such as the cardiac cycle. A region of interest is tracked from frame to frame and based on a known last position and the velocity at the known position. Strain and rotation are determined from the changes in velocity along selected axes.
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Charles E. Spritzer, et al. "Rapid MR Imaging of Blood Flow with a Phase-Sensitive, Limited-Flip-Angle, Gradient Recalled Pulse Sequence: Preliminary Experience.sup.1," Radiology, 176:255-262, Jul. 1990.
Van J. Wedeen, et al. "Measurement of Myocardial Strain with Phase Sensitive MR," Proceedings of Soc. Mag. Res in Med. Meeting, Aug. 18-24, 1990.
Cohen Lee S.
Pfaffle K. M.
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