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Updated: Sep 12, 2025
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Hyperpolarized Xenon for NMR and MRI Applications
Published on: September 6, 2012
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Hyperpolarized 129Xe MRI and Spectroscopy: Quantitative Measurements, Results, and Emerging Opportunities
Alexandra Schmidt1,2, James A Liggins1, Haad Bhutta1
1UBC Centre for Heart Lung Innovation, St. Paul's Hospital, 1081 Burrard St, Rm 166, Vancouver, BC, Canada V6Z 1Y6.
Radiology. Cardiothoracic Imaging
|August 7, 2025
Summary
Hyperpolarized xenon 129 (129Xe) MRI and MR spectroscopy (MRS) offer non-ionizing imaging of lung function and microstructure. These techniques quantify ventilation, gas exchange, and alveolar details, aiding in early disease detection and management.
Area of Science:
- Pulmonary medicine
- Medical imaging
- Cardiopulmonary diagnostics
Background:
- Hyperpolarized 129Xe MRI and MRS visualize pulmonary function and microstructure using inhaled 129Xe gas.
- These methods are well-tolerated, radiation-free, and validated against pulmonary function tests.
Purpose of the Study:
- To review established and emerging quantitative measurements from 129Xe MRI and MRS.
- To illustrate clinical applications in characterizing and managing cardiopulmonary diseases.
Main Methods:
- 129Xe MRI maps 3D ventilation, quantifying defects, dynamics, and heterogeneity.
- 129Xe MRS quantifies gas transfer, blood oxygenation, and vascular remodeling.
- Diffusion-weighted imaging models alveolar microstructure by quantifying airspace enlargement.
Main Results:
- 129Xe MRI detects early-stage disease where traditional tests lack sensitivity.
- Regional functional assessment aids in detecting localized deficits and improving interventions.
- Measurements correlate with pulmonary function tests across various cardiopulmonary diseases.
Conclusions:
- 129Xe MRI and MRS are valuable for treatment planning, disease monitoring, and developing surrogate endpoints.
- These techniques enhance the characterization and management of cardiopulmonary diseases.
- 129Xe MRI and MRS offer advanced insights into lung function and microstructure.
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