ventilation agents used in pulmonary scintigraphy
on Saturday, March 17, 2012
Question Number 1611 Question: regarding the ventilation agents used in pulmonary scintigraphy a) the physical half-life of Xenon-133 is about 3 minutes b) the emitted gamma rays of Xenon-133 have a keV of about 140 c) when using Krypton-81m ventilation can be performed after the perfusion study d) a Tc-99m DTPA aerosol may be used e) when using a Carbon dioxide tracer a persistent hot spot indicates a perfusion defect
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Labels: MEDICINE, Radiology