Magnetic resonance imaging method and device achieving water/fat separation

摘要

In a magnetic resonance imaging method and apparatus for water/fat separation, a turbo spin echo BLADE (TSE BLADE) artifact correction sequence is executed to acquire original data for an in-phase image and original data for an opposite-phase image, and an in-phase image on the basis of the original data for the in-phase image and an opposite-phase image on the basis of the original data for the in-phase image and the original data for the opposite-phase image are reconstructed. Water and fat images are calculated on the basis of the reconstructed in-phase image and opposite-phase image. By using a TSE BLADE sequence to acquire k-space data, the advantage of the BLADE sequence of being insensitive to rigid body motion and pulsation is inherently present, thereby reducing sensitivity to motion artifacts while improving the image signal-to-noise ratio.

主权项

1. A magnetic resonance imaging method achieving water/fat separation, the method comprising:
for each scanning layer of multiple scanning layers, operating a magnetic resonance data acquisition unit to execute a turbo spin echo BLADE artifact correction sequence to acquire original data for an in-phase image and original data for an opposite-phase image; in a processor, reconstructing an in-phase image on the basis of the original data for the in-phase image, and reconstructing an opposite-phase image on the basis of the original data for the in-phase image and the original data for the opposite-phase image; and in said processor, calculating water and fat images on the basis of the reconstructed in-phase images and the reconstructed opposite-phase images of the multiple scanning layers, and making the in-phase image and the opposite-phase image available at an output of the processor as respective data files, wherein calculating water and fat images comprises:
on the basis of spatial information corresponding to multiple two-dimensional in-phase images and opposite-phase images, the multiple two-dimensional in-phase images and opposite-phase images arranging to form one three-dimensional in-phase image and one three-dimensional opposite-phase image;subjecting the three-dimensional in-phase image and three-dimensional opposite-phase image to phase correction; andcalculating water and fat images on the basis of the phase-corrected in-phase images and the phase-corrected opposite-phase images of the multiple scanning layers.