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Monkey brain cortex imaging by photoacoustic tomography.

Xinmai Yang1, Lihong V Wang

  • 1Washington University in St. Louis, Department of Biomedical Engineering, Optical Imaging Laboratory, St. Louis, Missouri 63130, USA.

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|November 22, 2008
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Summary
This summary is machine-generated.

Photoacoustic tomography (PAT) successfully imaged monkey brain cortex blood vessels through intact skull and scalp. This demonstrates PAT

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Area of Science:

  • Biomedical imaging
  • Neuroimaging
  • Photoacoustic imaging

Background:

  • Photoacoustic tomography (PAT) offers non-invasive imaging potential.
  • Imaging the brain through the skull presents significant challenges due to ultrasound attenuation.

Purpose of the Study:

  • To evaluate the feasibility of photoacoustic tomography for imaging the monkey brain cortex.
  • To assess PAT's ability to overcome skull-induced ultrasound signal distortion.

Main Methods:

  • Ex vivo photoacoustic tomography was performed on a monkey brain.
  • Comparative imaging was conducted with and without the scalp and skull.
  • Ultrasound attenuation through the skull was measured at various angles.

Main Results:

  • Reconstructed PAT images revealed major blood vessels on the monkey brain cortex.
  • PAT successfully imaged the brain cortex despite the presence of the intact skull.
  • Ultrasound attenuation and distortion effects of the skull were quantified.

Conclusions:

  • Photoacoustic tomography can effectively image brain cortex vasculature through intact skull.
  • PAT is robust against ultrasound signal attenuation and distortion caused by the skull.
  • This technique shows promise for non-invasive neuroimaging applications.