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
Image Sciences Institute, University Medical
Center Utrecht, Utrecht, Netherlands,
of Radiology, University Medical Center Utrecht,
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
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