94mTc can be produced via the 94Mo(p,n)94mTc nuclear reaction . Using enriched 94Mo provides a good yield with relatively low levels of impurities . Thermo-chromatographic separation of Mo from 94mTc is achieved using a steam distillation method . 94mTc is an attractive PET isotope (t- = 52 min) as it can po tentially be used as a substitute in the typical 99mTc-labeled single-photon-emitting radiopharmaceuticals.
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