Pulmonary embolism and lung scanning.
D002908:Chronic Disease; D003937:Diagnosis, Differential; D006333:Heart Failure / Q000175:diagnosis; D006801:Humans; D008171:Lung Diseases / Q000175:diagnosis; D011655:Pulmonary Embolism / Q000175:diagnosis* / Q000517:prevention & control; D011877:Radionuclide Imaging; D012119:Respiration; D013924:Thrombophlebitis / Q000175:diagnosis