Fig. 1

Comparison between converted absorbed doses of [¹³¹I]MIBG [8], [²¹¹At]MABG [9], [¹²⁵I]MIBG [10], and [⁷⁷Br]MBBG [10] and the true target absorbed dose of [²¹¹At]MABG [8]. a Converted absorbed doses from [¹³¹I]MIBG [8] as a reference, and absorbed dose of [²¹¹At]MABG [8] as a true target. [¹³¹I]MIBG [8] indicates the absorbed dose of an organ or tumor tissue when alpha rays derived from ²¹¹At were emitted by the number of radioactive decays of ¹³¹I. “with half-life (HL)” shows a converted absorbed dose of [¹³¹I]MIBG [8] corrected by the physical half-life of ²¹¹At, indicating the physical part of Eq. (5).“with HL + RAtio of Pharmacokinetics (RAP)” is an absorbed dose of “with HL” converted using the representative RAP coefficient. b Same as (a) except that [²¹¹At] MABG [9] is a reference. c Same as (a) except that [¹²⁵I]MIBG [10] is a reference. d Same as (a) except that [⁷⁷Br]MBBG [10] is a reference