title: Measurement of pulmonary perfusion using a digitised ECG-triggered gamma ray absorption technique.
abstract: AN ECG-triggered multisweep method for the collection of low-energy gamma ray absorption data in normal and cancerous tissue has been developed, resulting in digital perfusion curves with reliable statistics. The small intensity modulation ( approximately equal to 1.2%) due to lung perfusion is detected and separated from the much stronger intensity variations caused by ventilation in a satisfactory way. During this non-invasive test the patient is supine and breathes smoothly.
mesh_terms: D000576:Americium; D004562:Electrocardiography; D005720:Gamma Rays; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008175:Lung Neoplasms / Q000000981:diagnostic imaging / Q000503:physiopathology*; D010477:Perfusion; D011652:Pulmonary Circulation; D011859:Radiography; D012016:Reference Values
chemical_list: D000576:Americium