Robust estimation of the cerebral blood flow in arterial spin labelling.

  title={Robust estimation of the cerebral blood flow in arterial spin labelling.},
  author={Camille Maumet and Pierre Maurel and J-C Ferr{\'e} and Christian Barillot},
  journal={Magnetic resonance imaging},
  volume={32 5},
The introduction of arterial spin labelling (ASL) techniques in magnetic resonance imaging (MRI) has made feasible a non-invasive measurement of the cerebral blood flow (CBF). However, to date, the low signal-to-noise ratio of ASL gives us no option but to repeat the acquisition to accumulate enough data in order to get a reliable signal. The perfusion signal is then usually extracted by averaging across the repetitions. But the sample mean is very sensitive to outliers. A single incorrect… CONTINUE READING
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