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PubMed · 9402234

"Follow-up" method for processing of brain function MR images.

P Sabbah·G Simond·G Salamon
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Abstract

FMRI with standard 1.5 T scanners requires adapted algorithms because the time course of intensity signal showed a non-linearity of the baseline. The protocol contains sequential images covering periods of rest followed periods of stimulation. The images of each period of rest and stimulation were averaged, offering a series of averaged images. From this series, we conserved only the pixels which presented the alternated variations corresponding to the temporal pattern of the paradigm. A colour scale was used to present the average percentage of variations of each pixel selected. We have performed activation paradigms with a classical motor protocol. This simple "follow-up" method appears effective for the identification of activated areas.

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AlgorithmsBrainCerebral CortexHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMotor ActivityPhysical StimulationRestTime FactorsJournal Article

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P Sabbah, G Simond, G Salamon. "Follow-up" method for processing of brain function MR images.. https://doi.org/10.1016/s0895-6111(97)00016-5

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