in lung scintography

Question Number 1608

Question:
in lung scintography with Tc-99m macroaggregated albumin (MAA)

a) the albumin usually used is human in origin
b) particle size should exceed 150 microns
c) the Tc-99m MAA should be prepared the day before administration
d) the preperation should ideally be repeatedly mixed with blood in the syringe just before injection
e) severely ill patients with severe obstructive pulmonary disease should be injected with an increased number of particles


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