Fig. 7From: Gamma counting protocols for the accurate quantification of 225Ac and 213Bi without the need for a secular equilibrium between parent and gamma-emitting daughterMultiple time-point GC measurements were performed of the upper part of iTLC strip using \({\text{EW}}_{{213_{{{\text{Bi}}}} }}\) before SEq was reached between 213Bi and 225Ac (< 5 h), to determine the amount of bound 213Bi after 24 h of incubation in human serum of [225Ac]Ac-DEPA (A) and [225Ac]Ac-DOTA (B). The solid line represents the total amount of 225Ac (from GC of both parts of the iTLC strips) and the dotted line the amount of bound 225Ac. Error bars represent the standard deviation provided by the GC softwareBack to article page