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LPLC analysis to determine the stability of 99mTc-LAI. Samples from the patient dose were stored at 4°C and analyzed at the designated time points by both a UV detector set at 254nm and 200nm and an on-line radioactivity detector connected in sequence: (a) 0 hr; (b) 3 hr. The UV peaks overlap with the radioactivity peak, indicating that the radiolabel did not change the integrity of LAI.
