Figure 1

The S value for homogeneous distribution of radioiodine in the lumen of the human single follicle model. The S value and the relative contributions from the non-radiative transitions for homogeneously distributed radioiodine within the follicle lumen. The follicle lumen diameter varied from 10 to 500 μm surrounded by one single layer of follicle cells with a thickness of 10 μm and centrally placed 8 μm diameter follicle cell nucleus. (a) The S value for the follicle cell nucleus for ¹²³I (square), ¹²⁵I (triangle) and ¹³¹I (circle), as a function of the follicle lumen diameter. (b to d) The relative contribution per decay to the follicle cell nucleus from Auger electrons (AE) (triangle), internal conversion electrons (CE) (square), β particles (diamond), as a function of the follicle lumen diameter, for (b)¹²³I, (c)¹²⁵I and (d)¹³¹I. Error bars indicate the standard deviation of the mean value (SD) and are smaller than the symbol when not visible. Note the logarithmic scale on the ordinate in (a).