Radionuclides

Common Isotopes Used in Nuclear Medicine

isotope	symbol	Z	T1/2	decay	photons (keV)
Fluorine-18	18F	9	109.77 m	β+	511
Gallium-67	67Ga	31	3.26 d	ec	93,185,300
Krypton-81m	81mKr	36	13.1 s	IT	190
Rubidium-82	82Rb	37	1.27 m	β+	511
Technetium-99m	99mTc	43	6.01 h	IT	140
Indium-111	111In	49	2.80 d	ec	171, 245
Iodine-123	123I	53	13.3 h	ec	159
Xenon-133	133Xe	54	5.24 d	β-	81
Thallium-201	201Tl	81	3.04 d	ec	69–83, 167
Yttrium-90	90Y	39	2.67 d	β-	-
Iodine-131	131I	53	8.02 d	β-	364