title: Jugular venous reflux in cerebral radionuclide angiography.
abstract: Jugular venous reflux was observed in six routine cerebral radionuclide angiograms. Repeat studies during a Valsalva maneuver failed to reproduce the reflux. In one case the reflux appeared to be related to the arm position; but in the other five cases, the cause remains unknown. Such reflux may be mistaken for superior vena cava syndrome or asymmetric carotid blood flow.
mesh_terms: D002533:Cerebral Angiography; D006801:Humans; D007601:Jugular Veins; D011877:Radionuclide Imaging; D013667:Technetium; D014636:Valsalva Maneuver; D014652:Vascular Diseases / Q000175:diagnosis
chemical_list: D013667:Technetium