Dependency of the remnant 131I-NaI biokinetics on the administered activity in patients with differentiated thyroid cancer

Purpose To study the dependency of the effective half-life on the administered activity and the correlation between the time-integrated activity and the remnant uptake at 2d and 7d in patients treated for DTC with 1.11 GBq, 3.7 GBq or 5.55 GBq of 131I-NaI. Methods Ninety-two patients undergoing total thyroidectomy and lymph node removal were included. If cancer had not spread to lymph nodes, patients received 1.11 GBq of 131I-NaI when the lesion...