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Magnetic resonance system and method to create a magnetic resonance image data set by radial scanning of a magnetic resonance system
Magnetic resonance system and method to create a magnetic resonance image data set by radial scanning of a magnetic resonance system
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机译:磁共振系统和通过径向扫描磁共振系统来创建磁共振图像数据集的方法
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摘要
In a magnetic resonance apparatus and method to generate an image data set by means of a radial scanning of a raw data set, at least one calibration measurement is implemented for at least one predetermined spoke of the radial scan, and a gradient moment difference between an assumed gradient moment and an actually applied gradient moment is determined along the at least one predetermined spoke. Readout of all spokes of the predetermined raw data set ensues by activating multiple magnetic field gradients in spatial directions in order to respectively read out scan points of a respective spoke. The position of each scan point of each spoke is corrected depending on the gradient moment difference, by the position of the respective scan point that is assumed based on the respective activated magnetic field gradients being shifted by the gradient moment difference.
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