CEST fat artifact elimination method, medium, equipment and magnetic resonance imaging device
The invention discloses a CEST fat artifact elimination method, a medium, equipment and a magnetic resonance imaging device, and belongs to the technical field of magnetic resonance. According to the method, a multimodal model of fat is incorporated into a simplified model of a water-magnetization t...
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Zusammenfassung: | The invention discloses a CEST fat artifact elimination method, a medium, equipment and a magnetic resonance imaging device, and belongs to the technical field of magnetic resonance. According to the method, a multimodal model of fat is incorporated into a simplified model of a water-magnetization transfer (MT) two-pool Block-McConnell equation for iterative solution, and multimodal signals of water, magnetization transfer and fat are fitted at the same time, so that a reference signal of a CEST effect without direct fat artifacts is obtained; and finally, eliminating the indirect influence of the fat signal on the CEST signal in a normalization mode. The fat-containing Block-McConnell equation adopted by the invention can reflect the composition of the collected signal more truly, so that a more accurate CEST reference signal is obtained. According to the method, the fat artifacts in the CEST signals can be eliminated under the condition that the acquisition sequence does not need to be adjusted, and the acc |
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