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Abstract #1680

Geometrically undistorted imaging of orthopedic implants using compressed sensing accelerated phase encoded imaging

Jetse S. van Gorp 1 , Chris J.G. Bakker 1,2 , Frank Zijlstra 1 , Jouke Smink 3 , Job G. Bouwman 1 , and Peter R. Seevinck 1

1 Image Sciences Institute, University Medical Center Utrecht, Utrecht, Netherlands, 2 Department of Radiology, University Medical Center Utrecht, Utrecht, Netherlands, 3 Philips Healthcare, Best, Netherlands

In this work 3D imaging was performed in the presence of a titanium hip implant using conventional frequency encoded and purely phase encoded spin-echo sequences. Phase encoded images were shown to avert geometric distortion and to improve image quality in the proximity of the implant compared to conventional images. The total acquisition time could be successfully decreased a factor six by undersampling k-space in all three phase encoded dimensions followed by compressed sensing reconstruction.

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