Magnetic resonance imaging device and magnetic resonance imaging method using the same device
First Claim
1. A magnetic resonance imaging device, comprising:
- a pulse generating unit that generates a saturation pulse for reducing a signal of a water molecule within the living body and a pulse sequence after saturation time for the saturation pulse;
a sampling implementing unit that implements sampling in each of a plurality of k-spaces acquired according to a repeated sequence applying the saturation pulse and the pulse sequence, and implements the sampling for a sampling area including a center portion of each of the k-spaces and a certain portion differently determined for each of the k-spaces; and
an image acquiring unit that acquires a reconstructed image from the data acquired as a result of the sampling,wherein the pulse generating unit applies a saturation pulse having a different frequency per the sequence, andthe sampling implementing unit acquires data for the center portion at a Nyquist rate and acquires data for the certain portion at a rate lower than the Nyquist rate.
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Abstract
There is provided a magnetic resonance imaging device comprising: a pulse generating unit that generates a saturation pulse for reducing a signal of a water molecule within the living body and a pulse sequence after saturation time for the saturation pulse; a sampling implementing unit that implements sampling in each of a plurality of k-spaces acquired according to a repeated sequence applying the saturation pulse and the pulse sequence, and implements the sampling for a sampling area including a center portion of each of the k-spaces and a certain portion differently determined for each of the k-spaces; and an image acquiring unit that acquires a reconstructed image from the data acquired as a result of the sampling. Here, the pulse generating unit applies a saturation pulse having a different frequency per the sequence, and the sampling implementing unit acquires data for the center portion at a Nyquist rate.
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Citations
11 Claims
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1. A magnetic resonance imaging device, comprising:
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a pulse generating unit that generates a saturation pulse for reducing a signal of a water molecule within the living body and a pulse sequence after saturation time for the saturation pulse; a sampling implementing unit that implements sampling in each of a plurality of k-spaces acquired according to a repeated sequence applying the saturation pulse and the pulse sequence, and implements the sampling for a sampling area including a center portion of each of the k-spaces and a certain portion differently determined for each of the k-spaces; and an image acquiring unit that acquires a reconstructed image from the data acquired as a result of the sampling, wherein the pulse generating unit applies a saturation pulse having a different frequency per the sequence, and the sampling implementing unit acquires data for the center portion at a Nyquist rate and acquires data for the certain portion at a rate lower than the Nyquist rate. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A magnetic resonance imaging method, comprising:
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repeatedly implementing a sequence applying a saturation pulse for reducing a signal of a water molecule within the living body and a pulse sequence after saturation time for the saturation pulse; implementing sampling in each of a plurality of k-spaces acquired according to the sequence, and implementing the sampling for a sampling area including a center portion of each of the k-spaces and a certain portion differently determined for each of the k-spaces; and acquiring a reconstructed image from data acquired as a result of the sampling, wherein the implementing of the sequence comprises applying a saturation pulse having a different frequency per the sequence, and the implementing of the sampling comprises acquiring data for the center portion at the Nyquist rate acquiring data for the certain portion at a rate lower than the Nyquist rate. - View Dependent Claims (8, 9, 10, 11)
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Specification