... can not be used with lead, for example nuclear scrap container.Due to its unique characteristics, people ... alloy in nuclear medcine, radiation sheilding, such as collimator, nuclear shielding, beamstop, PET syringe shield, vial shield, Nuclear medicine--Positron ... , tungsten FDG transport container collimator for gamma camera Nuclear medicine--Radiotherapy, using two rows of very thin tungsten ...