Ramer · Alavi Nuclear Medicine Technology

16 Mock Examination 15721) If 450 mCi of 99m Tc eluted from a generator contain200 µCi of 99 Mo, is the eluate within the standards ofradionuclidic purity set forth by the NRC?a. yesb. noc. the NRC does not regulate radionuclidic purityd. cannot be determined from the information givene. this is an example of radiochemical impurity ratherthan radionuclidic impurity22) If SPECT images taken with 360° rotation, 32 stopsfor 15 sec/stop and a matrix of 64 ¥ 64 have significantstar artifact, which imaging parameter would be bestto change to correct the image?a. change the rotation to 180°b. change the number of stops to 64c. change the time/stop to 20 secondsd. change the matrix to 128 ¥ 128e. none of the above23) The images in Figure 16.2 were taken 2 hours followingthe intrathecal injection of a radiopharmaceutical.These are images from a:a. LeVeen shunt studyb. cisternogramc. esophageal transit studyd. CSF shunt patency studye. radionuclide venogram