No abstract available
MeSH terms
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Adult
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Aged
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Airway Obstruction / diagnosis
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Computers
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Female
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Humans
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Lung Diseases, Obstructive / diagnosis
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Male
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Middle Aged
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Photography / instrumentation
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Pulmonary Embolism / diagnosis
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Radioisotopes
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Radionuclide Imaging*
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Respiration*
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Spirometry / instrumentation
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Technetium
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Xenon*
Substances
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Radioisotopes
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Xenon
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Technetium