1.

Which of the following are desirable properties of a pharmaceutical agent for imaging? a. It easily accumulates in all tissues b. It has a long biological half-life c. It should be stable after labelling with a radio nuclide d. It emits gamma rays e. It has a high affinity for the target organ or tissue

Answer»

a. False. It should only accumulate in the target tissue. 

b. False. The biological half-life should be suited to the duration of the test but should not be unduly long in order to reduce the dose to the patient. 

c. True. 

d. False. The function of the pharmaceutical agent is to concentrate in the target tissue, whereas the radio nuclide will emit gamma rays. 

e. True.



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