. Lung function test. Female patient breathes into a spirometer to assess her lung health. The spirometer is formed of a bag (upper right) which fills with her exhaled air. The bag is connected to machinery which draws a graph of her rate of exhalation. Spirometry is used to diagnose lung diseases such as asthma and bronchitis. These diseases cause narrowing of the airways in the lungs. This can be detected by spirometry as the initial rate of exhalation falls dramatically. Treatment of minor lung disorders includes inhalation of bronchodilator drugs, which widen the airways. Major problems, such as emphysema, may require a heart-lung transplant. MODEL RELEASED

Photo website with Rights Managed and Royalty Free stock photos, images, illustrations and footage available for download immediately for commercial and editorial uses. Aflo is a leading independent supplier and producer of stock pictures and visual content. Search and find high quality images and video for design, print, web-use and publishing. Buy photos from our extensive collection of model released and property released sports images. Search some of the most beautiful travel and landscape pictures from our own photographers and license from our large collection of content, modern and archive, focusing on Japan. We provide free research. Register for personal account management and for full use of our Stock Photography website and start to download images now.