Method of employing angle images for measuring object motion in tagged magnetic resonance imaging
First Claim
1. A method of measuring motion of an object by magnetic resonance imaging comprisingapplying a magnetic resonance imaging pulse sequence to spatially modulate a region of interest of said object, acquiring at least one spectral peak from the Fourier domain of said spatially modulated object, computing the inverse Fourier transform information of said acquired spectral peaks, computing angle images from said spectral peaks, and employing said angle images to measure motion of said object.
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Abstract
A method of measuring motion of an object by magnetic resonance imaging including applying a pulse sequence to spatially modulate a region of interest of said object. At least one spectral peak is acquired from the Fourier domain of the spatially modulated object. The inverse Fourier transform information of the acquired spectral peaks is computed. The angle images are computed from the spectral peak. The angle images employed to measure motion of the object. The method may employ a SPAMM pulse sequence as the pulse sequence. The angle images may be employed to compute directly and automatically, planar strain in two dimensions or a full strain tensor in three dimension. The data may be useful in detection and quantification of myocardial ischemia and infarction. The angle images may also be employed to generate data equivalent to planar tag data automatically and can be employed to generate any desired tag separations. The angle images may also be employed to compute displacement, synthesize tag patterns and compute optical flow without requiring the use of regularization.
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Citations
36 Claims
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1. A method of measuring motion of an object by magnetic resonance imaging comprising
applying a magnetic resonance imaging pulse sequence to spatially modulate a region of interest of said object, acquiring at least one spectral peak from the Fourier domain of said spatially modulated object, computing the inverse Fourier transform information of said acquired spectral peaks, computing angle images from said spectral peaks, and employing said angle images to measure motion of said object.
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