An Em Algorithm for Rician Fmri Activation Detection

  title={An Em Algorithm for Rician Fmri Activation Detection},
  author={Victor Solo and Joonki Noh},
  journal={2007 4th IEEE International Symposium on Biomedical Imaging: From Nano to Macro},
In functional magnetic resonance imaging (IMRI), most of studies to detect activations in brain are using magnitude time courses which in fact obey Rice distribution. When signal to noise ratio (SNR) of a time course is high, it is known that the Gaussian approximation of Rice distribution works well. However, SNRs are not known before data analysis and imaging with high spatial resolution which decreases SNRs is increasingly required in functional studies. In this paper, we suggest a method to… CONTINUE READING
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Mathematical analysis of random noise

  • S. O. Rice
  • Bell Syst. Tech. J., vol. 23, pp. 282, 1944. 467
  • 1944
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