Voxel-wise uncertainty in CT substitute derived from MRI.

  title={Voxel-wise uncertainty in CT substitute derived from MRI.},
  author={Adam Johansson and Mikael Karlsson and Jun Yu and Thomas Asklund and Tufve Nyholm},
  journal={Medical physics},
  volume={39 6},
PURPOSE In an earlier work, we demonstrated that substitutes for CT images can be derived from MR images using ultrashort echo time (UTE) sequences, conventional T2 weighted sequences, and Gaussian mixture regression (GMR). In this study, we extend this work by analyzing the uncertainties associated with the GMR model and the information contributions from the individual imaging sequences. METHODS An analytical expression for the voxel-wise conditional expected absolute deviation (EAD) in… CONTINUE READING

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