Shunt detection with the short-lived radioactive gases.

  title={Shunt detection with the short-lived radioactive gases.},
  author={Denny Duane Watson},
  journal={Seminars in nuclear medicine},
  volume={10 1},
Conventional radionuclide techniques are limited by their inability to deliver noninvasively a compact bolus of radionuclide indicator into the left heart. This can be accomplished by the inhalation of oxygen-15-labeled carbon dioxide. The inhaled carbon dioxide passes freely across the alveolar membrane and enters the carbonate cycle, which, under the accelerating influence of carbonic anhydrase, transfers the oxygen-15 tracer onto water in the pulmonary venous blood. The result is an abrupt… CONTINUE READING


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