Patent ID: 9664764
Date: 2017-05-30
CPC Classifications: G01R

Claim:
1. A Susceptibility Weighting Imaging (SWI) method for acquiring a susceptibility-weighted image for use by a magnetic resonance imaging (MRI) system, comprising: acquiring a first RF echo signal in a first echo time for providing an image exclusive of susceptibility-weighting; acquiring a second RF echo signal in a second echo time longer than the first echo time for providing an image including susceptibility-weighting; applying a compensation gradient field for compensating for field inhomogeneity; in response to applying the compensation gradient field, acquiring a third RF echo signal in a third echo time longer than the second echo time; generating first, second and third images in response to data derived from the first, second and third RF echo signals respectively; compensating a first region in which magnetic resonance signal attenuation has occurred in the second image by combining the first, second and third images; deriving first, second and third magnitude images from the first, second and third images respectively, and deriving first and second phase images from the first and second images; identifying the first region using the first, second and third magnitude images; acquiring a magnitude image of the identified first region; and calculating a magnitude image of a second region excluding the first region in response to the second magnitude image.