ABSTRACT
Are the following statements true or false? Desirable prop erties of a radionuclide for imaging include: (a) a very short half-life. (b) emission of many different energy gamma rays. (c) easy attachment to pharmaceuticals at room tempera
ture. (d) emission of 20 keV gamma rays. (e) emission of gamma rays and no beta or alpha particles. (f) being readily available/producible on site. (g) decay to a stable daughter. (h) being able to form a stable product with a pharma
ceutical both in vitro and in vivo . (i) forming a low toxicity radio-pharmaceutical.
