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Ramer · Alavi Nuclear Medicine Technology

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62 Radioactivity, Radiopharmacy, and Quality Assurance15) Which of the following is an example of radionuclidicimpurity?a. presence of free 99m Tc in a preparation of 99m Tc sulfurcolloidb. presence of 99 Mo in 99m Tc eluatec. presence of aluminum ions in 99m Tc eluated. presence of pyrogens in eluate16) What is the maximum amount of aluminum ions (Al 3+ )allowed in one milliliter of 99m Tc eluate according to theUSP?a. none is allowedb. 5 µgc. 10 µgd. 15 µg17) What is indicated by the front of an ITLC strip?a. radionuclidic impurityb. particles of incorrect sizec. pyrogensd. this depends on the solvent and strip used18) If a kit contains 140 mCi of 99m Tc in 23 ml, how muchvolume must be withdrawn to obtain a dose of 5 mCi?a. 0.8 mlb. 30 mlc. 1.2 mld. 0.6 ml19) If a kit contains 140 mCi of 99m Tc in 23 ml at 9:00 a.m.,how much volume must be withdrawn to obtain a doseof 5 mCi at 3:00 p.m.?a. 0.8 mlb. 1.6 mlc. 2.4 mld. 0.6

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