Packaging system for radioactive materials having: a vial with closure for
accommodating the radioactive material; a first casing to be opened,
enclosing the vial, and essentially made from a transparent material,
which has a capture cross-section selected for shielding at least a part
of the emitted radiation; and a second casing to be opened, made from a
material with a high capture cross-section (Z) for essentially shielding
the remaining radiation, the second casing enclosing the first casing.