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MRI identifies structural and functional defects deep in the lungs of patients with asthma. MRI is mainly used to visualize the airspaces of the large airways and parenchyma. He-3 MRI (Hyperpolarized helium) is used in asthma and highly sensitive in identifying ventilation defects in asymptomatic patients with normal lung function.He-3 MRI of ventilation visualizes obstructive patterns which are used to determine the asthma phenotypes.

References

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