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Functional ultrasound imaging of the brain

Nature Methods volume 8, pages 662664 (2011) | Download Citation

Abstract

We present functional ultrasound (fUS), a method for imaging transient changes in blood volume in the whole brain at better spatiotemporal resolution than with other functional brain imaging modalities. fUS uses plane-wave illumination at high frame rate and can measure blood volumes in smaller vessels than previous ultrasound methods. fUS identifies regions of brain activation and was used to image whisker-evoked cortical and thalamic responses and the propagation of epileptiform seizures in the rat brain.

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Acknowledgements

We thank A. Urban for helpful comments on the manuscript and for technical advice on surgery and T. Montaldo for critical editorial comments on the manuscript.

Author information

Affiliations

  1. Institut Langevin, Ecole Supérieure de Physique et de Chimie Industrielles Paris Tech, Centre National de la Recherche Scientifique (CNRS) UMR7587, Institut National de la Santé et de la Recherche Médicale (INSERM) U979, Université Paris VII, Paris, France.

    • Emilie Macé
    • , Gabriel Montaldo
    • , Mathias Fink
    •  & Mickael Tanter
  2. Centre de Recherche Institut du Cerveau et de la Moelle Epinière, INSERM UMRS 975, CNRS UMR7225, Centre Hospitalier Universitaire Pitié Salpêtrière, Paris, France.

    • Ivan Cohen
    •  & Michel Baulac

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Contributions

M.B., M.F. and M.T. conceived and initiated the project; M.T. supervised the project. E.M., G.M. and I.C. designed and performed experiments; E.M., G.M. and M.T. wrote the manuscript.

Competing interests

The authors declare no competing financial interests.

Corresponding author

Correspondence to Mickael Tanter.

Supplementary information

PDF files

  1. 1.

    Supplementary Text and Figures

    Supplementary Figures 1–3 and Supplementary Notes 1 and 2

Videos

  1. 1.

    Supplementary Video 1

    Video showing changes in cerebral blood volume during induced epileptiform activity (4AP injection) imaged by fUS. The epileptiform activity is recorded during 1 hour with a short control time at the beginning (baseline). The video displays the variation in Power Doppler relative to the baseline in a color scale ranging from - 50% (blue) to + 50% (red), superimposed on a control Power Doppler image. fUS acquisitions are performed every 3s. The injection site is represented by a green circle and the time relative to injection is displayed in the video. The blood volume response to onset and propagation of hyperactivity is visualized from the injection site to other brain regions.

Zip files

  1. 1.

    Supplementary Software

    Implementation of fUS. A guide describes ultrasound sequences and signal processing. Code and data example are also provided.

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Publication history

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DOI

https://doi.org/10.1038/nmeth.1641

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