Fast Field Inhomogeneity and Concomitant Gradient Field Correction in Spiral Cardiac Imaging
نویسندگان
چکیده
Introduction: Cardiac imaging, for both real-time and triggered imaging, requires a high data acquisition rate. Spiral trajectories achieve this rate; however, their advantages are shadowed by off-resonance blurring and distortion effects. Current techniques to correct for this image degradation do not easily or quickly account for the different effects specifically field inhomogeneities and concomitant gradient fields [1-3]. We present two fast and accurate algorithms to correct for both of these effects. Speed is demonstrated in a real-time study, and accuracy is shown in a high-resolution study.
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