title: [Perfusion lung scan in unexplained pulmonary hypertension].
abstract: Thirty-two patients were diagnosed as unexplained pulmonary hypertension by clinical history, physical examination, hemodynamics, pulmonary angiography and perfusion lung scanning. The findings of pulmonary scans in twenty patients (62.5%) showed patchy heterogeneous perfusion defects, which suggested chronic silent pulmonary thromboembolism (CSPT) and in twelve cases (37.5%) demonstrated normal or equally diffuse radionuclide scattering due to primary pulmonary hypertension (PPH). This result corresponded with the pathological data in some of the relevant references. Pulmonary perfusion scan is a noninvasive, safe and simple procedure for determining whether CSPT or PPH is the causative factor in patients with unexplained pulmonary hypertension.
authors.affiliation: Cardiovascular Institute, CAMS, Beijing.
authors.forename: B P
authors.initials: BP
authors.lastname: Chen
authors.forename: Y Z
authors.initials: YZ
authors.lastname: Liu
authors.forename: X S
authors.initials: XS
authors.lastname: Cheng
mesh_terms: D000293:Adolescent; D000328:Adult; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006976:Hypertension, Pulmonary / Q000145:classification / Q000000981:diagnostic imaging*; D008168:Lung / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000000981:diagnostic imaging; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D011859:Radiography; D011877:Radionuclide Imaging; D013668:Technetium Tc 99m Aggregated Albumin
chemical_list: D013668:Technetium Tc 99m Aggregated Albumin