Detection of experimentally produced acute pulmonary arterial occlusion by methyl iodide-131 inhalation imaging.
Methyl iodide-131 (CH3I-131) is described as an agent for detection of acute experimentally produced pulmonary arterial occlusion in dogs. When gaseous CH3I-131 is inhaled, radioactivity passes instantaneously from the alveoli to the lung capillary bed. Where pulmonary blood flow exists, activity is washed out into the systemic circulation, but in areas of blood stasis, a transient pulmonary "hot spot" remains. CH3I-131 is easily produced and inexpensive, but administration is awkward and strict radiation safety precautions are mandatory.
D000818:Animals; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D004285:Dogs; D007457:Iodine Radioisotopes / Q000008:administration & dosage; D011651:Pulmonary Artery; D011652:Pulmonary Circulation; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging; D011877:Radionuclide Imaging; D012709:Serum Albumin; D013667:Technetium; D013668:Technetium Tc 99m Aggregated Albumin
D007457:Iodine Radioisotopes; D012709:Serum Albumin; D013668:Technetium Tc 99m Aggregated Albumin; D013667:Technetium