Regional distribution of ventilation-perfusion ratios in acute pulmonary embolism
Copyright policy )Regional distribution of ventilation-perfusion ratios in acute pulmonary embolism
Regional ventilation perfusion ratios have been computed in 44 patients with acute pulmonary embolism with a gamma-camera using Krypton 81m, a short-life radionuclide delivered by inhalation and infusion. This noninvasive technique is performed during tidal breathing and can be easily repeated. High V/Q's are detected in the embolic regions and low V/Q's in the nonembolic regions with a shift of the perfusion distribution towards these low values. This pattern disappears with recovery. This technique can be used in clinical practice for diagnostic purposes.
Radioisotopes, Acute Disease, Angiography, Krypton, Ventilation-Perfusion Ratio, Humans, Pulmonary Artery, Pulmonary Embolism, Radionuclide Imaging
Radioisotopes, Acute Disease, Angiography, Krypton, Ventilation-Perfusion Ratio, Humans, Pulmonary Artery, Pulmonary Embolism, Radionuclide Imaging
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