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Conf Proc IEEE Eng Med Biol Soc · Jan 2008
Comparative StudyK-space and image space combination for motion artifact correction in multicoil multishot diffusion weighted imaging.
- Anh T Van, Dimitrios C Karampinos, John G Georgiadis, and Bradley P Sutton.
- Electrical and Computer Engineering Department, University of Illinois at Urbana-Champaign, USA. tvan2@uiuc.edu
- Conf Proc IEEE Eng Med Biol Soc. 2008 Jan 1;2008:1675-8.
AbstractMotion during diffusion encodings leads to phase errors in different shots of a multishot acquisition. Phase differences in k-space data among shots result in phase cancellation artifacts in the reconstructed image. Due to aliasing of the phase from under-sampled regions of the shot, correction of the phase error using direct low-resolution phase subtraction is incomplete. We introduce a new k-space and image-space combination (KICT) method for motion artifacts cancellation that avoids incomplete phase error correction. Further, the method preserves the phase of the object, which is important for parallel imaging applications.
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