chest x-ray, linear hyperinflation
Wednesday, September 21, 2011. SIGNS OF HYPERINFLATION ON CHEST X-RAY. 1. Height of the right lung greater than 29.9 cms. 2. Location of the right hemidiaphragm at or below the anterior aspect of the seventh rib. 3. Flattening of the hemidiaphragm. 4. Enlargement of retrosternal space (on lateral chest x-ray) 5. Widening of the sternodiaphragmatic angle and.