Nuclear magnetic resonance imaging method
AssigneeHitachi, Ltd.
InventorsKoichi Sano, Shimbu Yamagata, Koichi Haruna, Hideaki Koizumi, Shinichi Sato, Tetsuo Yokoyama, Ryuzaburo Takeda
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Abstract
In order to make an accurate display possible even in case image data having been subjected to a Fourier transformation have negative values, the sampling timing deviations of measured signals having phase errors based on various factors are detected from the gradient of the linear components of the image data having been subjected to the Fourier transformation, and the density values of the image having the detected timing deviations corrected are displayed.
Claims7
In a nuclear magnetic resonance imaging apparatus comprising:
- generation means for generating static, oblique and RF magnetic fields;
- detection means for extracting a nuclear magnetic resonance signal from an object to be inspected;
- and processing means for executing a variety of arithmetic operations including an image reconstruction for the signal detected,
- a nuclear magnetic resonance imaging method comprising the steps of:
- subjecting to a Fourier transformation a measuring signal when the gradient of an oblique magnetic field in a phase encoding direction is zero;
- detecting the sampling timing deviation of said measuring signal from the gradient of the linear component of a phase data having been subjected to the Fourier transformation;
- correcting said timing deviation;
- and displaying the image corrected.
In a nuclear magnetic resonance imaging apparatus comprising:
- generation means for generating static, gradient and RF magnetic fields;
- detection means for extracting a nuclear magnetic resonance signal from an object to be inspected;
- and processing means for executing a variety of arithmetic operations including an image reconstruction for the signal detected,
- a nuclear magnetic resonance imaging method comprising the steps of:
- detecting the sampling timing deviations of a measured signal in an arbitrarily directional section in both a time axis direction and a phase encoding direction;
- correcting said timing deviations;
- and displaying an image corrected.
Dependencies are inferred from the claim text.