Image-based EPI ghost artifact reduction using iterative phase correction
نویسندگان
چکیده
Abstract. We describe an iterative algorithm for reducing EPI ghost artifacts using image-based phase corrections. Ghosts outside the parent object are set to the background level and a model k-space is obtained from the Fourier transform of the resulting image. The phase offsets in each k-space line are estimated by comparison with the corresponding line in the model k-space. We hypothesise that iteration will result in a convergence towards an image in which the ghost is minimised.
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تاریخ انتشار 2001