Radioisotopes often emit alpha particles, beta particles, or gamma rays. The distance they travel through matter increases in order from alpha to gamma. Each radioisotope has a characteristic half-life, which is the time needed for half of a sample of radioisotope to undergo nuclear decay.Which quality is desirable for a radioisotope that is used for medical imaging of a specific organ? Check all that apply.half-life of several yearshalf-life of several dayshalf-life of several secondsemission of gamma raysemission of alpha particlesability to be attached to a compound used by the bodyability to pass through the body without being absorbed