Technical Note: On the size of susceptibility‐induced MR image distortions in prostate and cervix in the context of MR‐guided radiation therapy
Sign Up to like & getrecommendations! Published in 2018 at "Medical Physics"
DOI: 10.1002/mp.12785
Abstract: PURPOSE To investigate the extent of MR image distortions in the pelvis caused by susceptibility-induced field inhomogeneities in MR images in the context of a study on MR-guided radiotherapy. METHODS Using a high-bandwidth double-echo gradient… read more here.
Keywords: susceptibility induced; image distortions; prostate cervix; distortions prostate ... See more keywords
Correcting image distortions from a nonlinear B1+$$ {\boldsymbol{B}}_{\mathbf{1}}^{+} $$ ‐gradient field in frequency‐modulated Rabi‐encoded echoes
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DOI: 10.1002/mrm.29549
Abstract: To correct image distortions that result from nonlinear spatial variation in the transmit RF field amplitude ( B1+$$ {B}_1^{+} $$ ) when performing spatial encoding with the method called frequency‐modulated Rabi encoded echoes (FREE). read more here.
Keywords: image distortions; frequency modulated; rabi encoded; encoded echoes ... See more keywords
Sensitivity of Sparse Codes to Image Distortions
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DOI: 10.1162/neco_a_01513
Abstract: Abstract Sparse coding has been proposed as a theory of visual cortex and as an unsupervised algorithm for learning representations. We show empirically with the MNIST data set that sparse codes can be very sensitive… read more here.
Keywords: sensitivity sparse; sparse; image distortions; sparse codes ... See more keywords