Contrast enhanced magnetic resonance angiography with chemical shift encoding for fat suppression

摘要

The invention relates to a method of performing contrast enhanced first pass magnetic resonance angiography, the method comprising: acquiring (302) magnetic resonance datasets of a region of interest using a single- or multi-echo data acquisition technique, wherein the echo times of the one or multiple echoes are flexible, wherein at the time of the data acquisition the region of interest comprises fat, water and a contrast agent, processing (304) the datasets using a generalized Dixon water-fat separation technique to eliminate the signal originating from the fat from the background for reconstruction of an image data set.

主权项

1. A method of performing contrast enhanced first pass magnetic resonance angiography, the method comprising:
acquiring magnetic resonance datasets of a region of interest, during a first pass of contrast agent through the region of interest after intravenous injection of the contrast agent, using a multi-echo data acquisition technique using multiple echoes, wherein echo times of the multiple echoes are flexible in that the echoes are not fixed to times at which a water signal originating from water and a fat signal originating from fat are in-phase or opposed-phase, and wherein the region of interest comprises fat, water and the contrast agent during the multi-echo data acquisition; and processing the datasets using a modified Dixon water-fat separation technique to eliminate the fat signal originating from the fat from background of the region of interest to reconstruct a magnetic resonance angiographic image data set.