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Related Concept Videos

Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

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Magnetic Resonance Imaging (MRI) and Ventilation Perfusion Scans are two radiological investigations that offer detailed diagnostic images of the body, particularly lung structures.
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Positron Emission Tomography01:29

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Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
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Related Experiment Video

Updated: Sep 27, 2025

Author Spotlight: Advancing Lung Disease Research with Free-Breathing Hyperpolarized Xenon-129 MRI
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[Noninvasive functional lung imaging with hyperpolarized xenon : Breakthrough for diagnostics?]

Mariia Anikeeva1,2, Maitreyi Sangal3, Oliver Speck3

  • 1Sektion Biomedizinische Bildgebung, Molecular Imaging North Competence Center (MOIN CC), Klinik für Radiologie und Neuroradiologie, Universtätsklinikum Schleswig-Holstein, Christian-Albrechts-Universität zu Kiel, Am Botanischen Garten 14, 24118, Kiel, Deutschland. Mariia.Anikeeva@rad.uni-kiel.de.

Radiologie (Heidelberg, Germany)
|April 11, 2022
PubMed
Summary

Hyperpolarized xenon-129 MRI (Xe-MRI) offers a noninvasive method to visualize lung microstructure and function. This advanced technique provides unique insights into gas exchange and ventilation defects, surpassing traditional X-ray limitations.

Keywords:
Gas transferHyperpolarizationMagnetic resonance imagingPulmonary function testsXenon-129

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Area of Science:

  • Pulmonary imaging
  • Medical physics
  • Respiratory medicine

Background:

  • Magnetic resonance imaging (MRI) offers excellent soft tissue contrast but is limited in lung imaging due to low proton density and air-tissue interfaces.
  • X-ray methods are commonly used for lung imaging but involve ionizing radiation.
  • Limitations of conventional MRI in lung imaging necessitate advanced techniques.

Purpose of the Study:

  • To review pulmonary MRI using hyperpolarized xenon-129 (Xe-MRI).
  • To highlight Xe-MRI's unique insights into lung microstructure, function, and gas exchange.
  • To emphasize parameters not accessible by standard clinical methods.

Main Methods:

  • Hyperpolarization amplifies the xenon-129 signal up to 100,000 times via laser-polarized rubidium and xenon collisions.
  • Hyperpolarized xenon gas is administered to the patient in a bag for inhalation before the MRI scan.
  • Specialized MRI sequences are used to visualize lung properties.

Main Results:

  • Xe-MRI enables 3D visualization of lung ventilation, microstructure, and gas exchange.
  • Quantitative display of ventilation defects, alveolar size, and tissue gas uptake is achievable.
  • Gas transfer to the blood can be visualized, offering detailed functional information.

Conclusions:

  • Xe-MRI provides unique, noninvasive, in vivo information about lung state.
  • The technique offers insights into microstructure and function in under a minute.
  • Xe-MRI overcomes limitations of conventional lung imaging methods.