Related Experiment Video

Updated: Jun 24, 2026

Non-invasive Optical Measurement of Cerebral Metabolism and Hemodynamics in Infants
11:39

Non-invasive Optical Measurement of Cerebral Metabolism and Hemodynamics in Infants

Published on: March 14, 2013

Noninvasive quantification of whole-brain cerebral metabolic rate of oxygen (CMRO2) by MRI

Feng Xu1, Yulin Ge, Hanzhang Lu

  • 1Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, Texas 75390, USA.

Magnetic Resonance in Medicine
|April 9, 2009
PubMed

Insights

A new noninvasive MRI method accurately estimates cerebral metabolic rate of oxygen (CMRO2), a key brain health marker. This technique offers a convenient alternative to existing methods for routine clinical use.

Area of Science:

  • Neuroimaging
  • Physiology
  • Biophysics

Background:

  • Cerebral metabolic rate of oxygen (CMRO2) is crucial for assessing brain function and health.
  • Current CMRO2 quantification methods using PET or MRI often require specialized equipment or contrast agents, limiting their clinical applicability.
  • A need exists for noninvasive, routine-friendly techniques to measure brain metabolism.

Purpose of the Study:

  • To develop and validate a noninvasive MRI-based method for estimating whole-brain CMRO2 in humans.
  • To compare different MRI acquisition strategies for optimal CMRO2 measurement.
  • To explore the relationship between blood flow and venous oxygenation in the brain.

Main Methods:

  • Utilized phase-contrast MRI for quantitative blood flow measurement.
  • Employed T2-relaxation-under-spin-tagging (TRUST) MRI for estimating venous oxygenation.
  • Applied the Fick principle (arteriovenous oxygen difference) to calculate CMRO2.
  • Compared various phase-contrast and TRUST MRI acquisition protocols.

Main Results:

  • The developed noninvasive MRI method successfully estimated whole-brain CMRO2.
  • Average CMRO2 values in healthy young subjects were 132.1 ± 20.0 µmol/100 g/min, consistent with PET findings.
  • Nongated phase-contrast MRI and sagittal sinus TRUST MRI proved most efficient and accurate.
  • A positive correlation was observed between blood flow and venous oxygenation across subjects.

Conclusions:

  • This noninvasive MRI technique provides a convenient and effective approach for CMRO2 quantification.
  • The method holds potential for assessing brain metabolism in various neurological conditions and physiological states.
  • It offers a valuable alternative to existing, more invasive or equipment-intensive CMRO2 measurement techniques.

More Related Videos

Oxygenation-sensitive Cardiac MRI with Vasoactive Breathing Maneuvers for the Non-invasive Assessment of Coronary Microvascular Dysfunction08:35

Oxygenation-sensitive Cardiac MRI with Vasoactive Breathing Maneuvers for the Non-invasive Assessment of Coronary Microvascular Dysfunction

Published on: August 17, 2022

Multi-Tracer Studies of Brain Oxygen and Glucose Metabolism Using a Time-of-Flight Positron Emission Tomography-Computed Tomography Scanner08:36

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

Published on: June 7, 2024

Related Concept Videos

Magnetic Resonance Imaging01:24

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...
Imaging Studies for Cardiovascular System IV: CMRI01:21

Imaging Studies for Cardiovascular System IV: CMRI

Cardiovascular magnetic resonance imaging, or CMRI, is a non-invasive diagnostic test that employs a magnetic field and radiofrequency waves to create precise images of the heart and arteries. It provides comprehensive information about cardiac anatomy, function, perfusion, and tissue characterization without ionizing radiation.IndicationsCMRI diagnoses various heart conditions, including tissue damage from heart attacks, ischemic heart disease, myocarditis, aortic issues (tears, aneurysms,...