Simplified Assessment of Radioiodine Biokinetics for Thyroid Cancer Patients: A Practical Approach Using Continuous External Radiation Monitoring.

Introduction: The biokinetics of radioiodine (RAI) in thyroid cancer patients are complex. This study aims to develop a practical approach for assessing RAI biokinetics to predict patient discharge time and estimate radiation exposure to caregivers.

Methods: We retrospectively reviewed data from patients with differentiated thyroid carcinoma undergoing RAI treatment.

Benign Parathyroid Hyperplasia With Incidental Pulmonary Seeding on 99mTc-MIBI Scintigraphy and FDG PET/CT.

A 50-year-old woman with end-stage renal disease presented with recurrent hyperparathyroidism after parathyroidectomy. 99mTc-MIBI scintigraphy did not show MIBI-avid lesion in the neck or mediastinum but in bilateral lung fields instead. On suspicion of malignancy, 18F-FDG PET/CT was performed and depicted no significant FDG uptake throughout the whole body.