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EJNMMI Physics

Table 3 Response difference comparison of the ionization chamber measurements of 161Tb, 137Cs, 60Co, 133Ba and 57Co solutions in Eppendorf tubes and sterile glass vials

From: Precise activity measurements of medical radionuclides using an ionization chamber: a case study with Terbium-161

Radionuclides

Energy of gamma lines (keV)

Response difference (%)

161Tb

49–75

8.5

137Cs

662

0.23

60Co

1173–1332

0.21

133Ba

276–384

0.42

57Co

122–136

0.6

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