4DMedical lung imagery sheds more light on 'long COVID' effects

The scans by 4DMedical allow physicians to detect areas of high and low lung ventilation using existing equipment in hospitals, said founder and Chief Executive Andreas Fouras. The 'four dimensions' refers to the scan's ability to measure the phases of breath as it passes into and out of the lungs. 'It takes a short video sequence. We use about 20 seconds worth of video sequence of the patient just breathing naturally,' said Fouras. 'From that video sequence, we're able to mathematically calculate the motion and then the airflow everywhere around the lungs.'