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. 2015 Jun;5(3):433–447. doi: 10.3978/j.issn.2223-4292.2015.03.16

Table 3. Most common used SPECT radioisotopes.

Radionuclides 67Ga 67Cu 99mTc 111In 123I 153Sm 159Gd 166Ho 177Lu
Energy (keV) 93 185 140 245 159 103 363 80 208
T1/2 3.26 d 3 d 6.06 h 2.83 d 13.2 h 47 h 20 h 26 h 7 d

SPECT, single photon emission computed tomography; d, days; h, hours.