disease population measurement lung measurement dose of whole thorax lung irradiation that causes 50% of the total study population to have lung dysfunction 2021-03-01T17:57:44Z CMO:0003666 CMO:0003704 PMID:30575429 The amount of x-radiation that is sufficient to cause 50 percent of a population to have lung dysfunction (measurable as increased breathing rate or other parameter) within a certain time frame. clinical_measurement_ontology dose of whole thorax lung irradiation at which breathing rate increases for 50% of the total study population dose of whole thorax lung x-radiation that causes 50% of the total study population to have lung dysfunction slaulede