Hyperpolarized ³He Imaging:

Hyperpolarized ¹²⁹Xe Imaging:

Human lungs images, from an asthma subject, pre and post-bronchodilator.

³He images from a subject with asthma.

These images were taken in three consecutive weeks, and show small areas with poor ventilation (arrows). The cause of these areas could be linked with mucus plugs that move into the lungs and obstruct the airways. The images in each column have the same physiological position.

First week
Second week
Third week