mri gibbs ringing artifact reduction
TRANSCRIPT
![Page 1: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/1.jpg)
Reconstructed using the acquired 256 Phase encoding steps
![Page 2: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/2.jpg)
Reconstructed using acquired 128 PE (note the Gibbs ringing artifacts shown by the arrows)
![Page 3: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/3.jpg)
(c) 128 PE data spectrally extrapolated to 256 PE (note the ripples have gone away)
![Page 4: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/4.jpg)
Another clinical example – 256 Acquired PE
![Page 5: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/5.jpg)
128 Acquired PE (Ringing artifact shown by white arrow can be mistaken for an abnormality)
![Page 6: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/6.jpg)
128Acquired PE to 256 spectral extrapolated PE (note the ringing artifacts are less pronounced)
![Page 7: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/7.jpg)
256 Acquired PE to 512 extrapolated PE (note the ringing artifacts have almost disappeared)
![Page 8: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/8.jpg)
Another example with phantoms – 256 Acquired PE
![Page 9: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/9.jpg)
(b) 128 Acquired PE - Note the Gibbs ringing artifacts (wave like ripples around the black holes)
![Page 10: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/10.jpg)
Exploded view near a black hole of 128 Acquired PE case (note the ripples due to Gibbs ringing)
![Page 11: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/11.jpg)
128 Acquired PE transformed to 256 spectrally extrapolated PE
![Page 12: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/12.jpg)
256 Acquired PE transformed to 512 spectrally extrapolated PE
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128 Acquired PE (left) compared with 256 spectrally extrapolated
PE (middle) and 256 acquired PE in an exploded region
![Page 14: Mri Gibbs Ringing Artifact Reduction](https://reader035.vdocument.in/reader035/viewer/2022081506/557cd070d8b42a7e5b8b517b/html5/thumbnails/14.jpg)
256 acquired PE (left) compared with 512 spectrally extrapolated PE (right) in an exploded region