#4half-life
>
.
> During disintegration, radionuclides emit electromagnetic radiation (photons), which can be detected, localized, and quantitated by sophisticated radiation detectors
Radiation- causes deaths, longer it stays in the body the more harmful it is
Radiopharmaceuticals are also chosen for their particular radioactive properties such as half-life, type of radiation emitted during decay, photon energy, cost, and availability