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Principles of Xenon MRI Technology

The operating principle of Xenon MRI is based on the hyperpolarization of xenon gas (¹²yXe). A dedicated polarization system uses circularly polarized laser light to align the nuclear spins of xenon atoms, increasing their magnetic resonance signal by several orders of magnitude. Importantly, this process does not alter the chemical properties of xenon, preserving its inert behavior. Once hyperpolarized, the xenon gas is inhaled by the patient, occupying the airspaces of the lungs. When imaged using MRI, the enhanced signal allows for highly sensitive detection of lung ventilation and gas distribution, overcoming the traditional limitations of proton-based MRI in pulmonary imaging.

Functional and Quantitative Lung Imaging

Hyperpolarized Xenon MRI enables quantitative assessment of lung function, including:

• Regional ventilation distribution

• Ventilation defects

• Gas diffusion and transfer

• Lung morphology and microstructural integrity

Because xenon is soluble in pulmonary tissue and blood, Xenon MRI can also provide insights into alveolar-capillary gas exchange, offering functional information that is not accessible through CT, X-ray, or standard MRI techniques.

Additional Specifications

Ongoing research into Hyperpolarized Xenon MRI is expanding its role in the study of pulmonary diseases and therapeutic evaluation. Researchers are using this technology to investigate conditions such as:

• Chronic obstructive pulmonary disease (COPD)
• Asthma
• Interstitial lung disease
• Pulmonary fibrosis
• Early-stage lung dysfunction