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Related Concept Videos

Brain Imaging01:14

Brain Imaging

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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
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Related Experiment Video

Updated: Jun 10, 2025

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner
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276

Optical Methods for the Study of Brain Metabolism In Situ.

Joseph C LaManna1

  • 1Department of Physiology & Biophysics, Case Western Reserve University School of Medicine, Cleveland, OH, USA. jcl4@case.edu.

Advances in Experimental Medicine and Biology
|October 14, 2024
PubMed
Summary
This summary is machine-generated.

Optical methods like near-infrared spectroscopy (NIRS) and two-photon phosphorescence lifetime microscopy are advancing the study of brain oxygen metabolism. These techniques illuminate cerebral cortex metabolic states in intact brains.

Keywords:
ChanceJöbsisLübbersNADH fluorescenceNIRSNear-infrared spectroscopyVisible spectrophotometry

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Area of Science:

  • Neuroscience
  • Biophysics
  • Medical Optics

Background:

  • The International Society of Oxygen Transport to Tissue (ISOTT) has a 50-year history exploring brain oxygen metabolism.
  • Pioneering work by Chance, Lübbers, and Jöbsis in the 1970s-1980s established foundational optical methods.
  • Early studies utilized fluorescence and spectroscopy to analyze metabolic components like pyridine nucleotides and haemoglobin.

Purpose of the Study:

  • This review focuses on optical methods (UV, Visible, Near-Infrared) for studying brain oxygen metabolism in intact brains.
  • It highlights the evolution of these techniques over 50 years of ISOTT's history.
  • It identifies future directions in optical brain metabolism research.

Main Methods:

  • Review of optical techniques including UV, Visible, and Near-Infrared (NIR) spectroscopy.
  • Discussion of fluorescence methods for pyridine nucleotides and flavoprotein.
  • Examination of haemoglobin saturation and mitochondrial cytochrome chain analysis.

Main Results:

  • Significant technical advances in instrumentation, detectors, and computing power have propelled the field.
  • Established optical methods continue to be refined and applied to brain metabolism studies.
  • Current research directions include advanced NIR instrumentation and two-photon phosphorescence lifetime microscopy.

Conclusions:

  • Optical methods have significantly advanced the study of brain oxygen metabolism.
  • While technical progress is substantial, physiological theory and mechanistic understanding require further development.
  • Future research will likely focus on advanced NIR techniques and novel microscopy for deeper insights into brain metabolism.