Fig. 1.

Examples of the measurement setup for patients 14 (slower kinetics) and 17 (faster kinetics) who stayed 68 and 33 h in the hospital after iodine administration. The measured dose rates at 1-m distance (in logarithmic scale) during the hospital stay are presented with solid circles (#14) and open squares (#17) with two different model fits, monoexponential (solid line) and biexponential (dotted curve). The first thermoluminescence dosimetry holder was used during the hospital stay (solid arrow, Δt₁) and the second holder was used after the hospital discharge up to 1 week from the administration of radioiodine (dashed arrow, Δt₂). The parameters of the biexponential model are #14: k=0.013, T₁=16.7 h (monoexponential: 17.1 h), and #17: k=0.006, T₁=10.4 h (monexponential: 10.5 h).