Lung abnormalities could be detected 3 months after the patient has been infected with the novel coronavirus, according to a study by Oxford University. 10 patients were studied using a novel scanning technique. The technique involved uses a gas called Xenon during MRI scans, to identify damage not picked up by ordinary scans. 8 of the patients showed tiredness and shortness of breath even 3 months after being infected! Lung damage may be one factor behind 'long Covid', researchers believe.