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Samarium-153 (153Sm) has a half-life of 46.3 hours, undergoing β− decay into 153Eu. As a component of samarium lexidronam, it is used in palliation of bone cancer. It is treated by the body in a similar manner to calcium, and it localizes selectively to bone.

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5 minute measurement with a High Purity Germanium (HPGe) radiation detector.


Isotope: Samarium
Mass number: 152
Atomic number: 62
Neutron number: 90

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