Thyroid Cancer Imaging - I-123/I-131 Planar & SPECT/CT and F-18 FDG PET/CT
Patient Preparation
Recommended withdrawal times for various medications before diagnostic imaging or therapy with radioactive iodine is described below. (Click below to enlarge the table.)
Well-Differentiated Thyroid Cancer
Backlog
Razfar A et al. Clinical Usefulness of Positron Emission Tomography–Computed Tomography in Recurrent Thyroid Carcinoma. Arch Otolaryngol Head Neck Surg. 2010;136(2):120-125. (AOHNS link)
Shammas A et al. 18F-FDG PET/CT in Patients with Suspected Recurrent or Metastatic Well-Differentiated Thyroid Cancer. J Nucl Med 2007; 48(2): 221-226. (JNM link)
Shammas A et al. 18F-FDG PET/CT in Patients with Suspected Recurrent or Metastatic Well-Differentiated Thyroid Cancer. J Nucl Med 2007; 48(2): 221-226. (JNM link)
Management (DTC)
Therapy (DTC)
Society of Nuclear Medicine Procedure Guideline for Therapy of Thyroid Disease with Iodine-131 (Sodium Iodide). Version 2.0. SNM.
Medullary Thyroid Cancer
Backlog
Ong SC et al. Diagnostic Accuracy of 18F-FDG PET in Restaging Patients with Medullary Thyroid Carcinoma and Elevated Calcitonin Levels. J Nucl Med 2001; 42(1): 77-78. (JNM link)
Notes
According to recent NEJM articles, Thyrogen as a preparation for iodine uptake is "non-inferior" to TH Withdrawal (THW) for Stage I and II DTC. There is not enough data to say this for Stage III and IV DTC, so THW is the preferred method of preparation.
- SM at Endocrinology MDTB 7/2014
- SM at Endocrinology MDTB 7/2014