Introduction: In patients with thyroid carcinoma, radiation absorbed doses of the thyroid and surrounding tissues is important to weigh risk and benefit considerations. In nuclear medicine, the accuracy of absorbed dose of internally distributed radionuclides is estimated by different methods such as MIRD and direct method using TLD. The aim of this study is using T...

  Introduction: Patients administered with a therapeutic dose of 131I for thyroid cancer treatment are potential sources of unacceptably high radiation exposure to other individuals, particularly the patient's immediate family members. The aim of this study is to investigate effects of early liothyronine consumption after radio-iodine therapy on accumulated dose and e...

background: radiodine therapy (rit) for hyperthyroidism is increasingly used as a therapy of choice in most of the patients. effect of multiple factors on the result of therapy was noted. this study tries to analyze the effect of multiple factors on success rate of rit. methods and patients: one hundred and sixty four hyperthyroid patients referred for rit therapy from 1996-99, were studied. th...

Introduction: Hypothyroidism is one of the frequent side effects of radiotherapy of head and neck cancers, breast cancer, and Hodgkin's lymphoma. It is recommended to estimate the normal tissue complication probability of thyroid gland using radiobiological modeling during treatment planning. Moreover, the use of artificial neural network is also proposed as a new method for t...

differentiated thyroid carcinomas usually show good uptake and response to i-131 ablative treatment. in this study, 90 patients following near total thyroidectomy who were referred to our institute for i-131 therapy are retrospectively studied. the patients are divided in two groups. group 1 revealed complete ablation after one dose of i-131. group 2 needed more than one dose of i-131 for ablat...

Introduction: Trace elements are important for the normal function of thyroid and prevention of its diseases. Normal activities of thyroid including the synthesis of thyroid hormones and regulation of metabolism are dependent on the presence of trace elements. On the other hand, thyroid hormones may also affect the trace element levels. In this study, we investigated the effects of induced h...

High dose thyroid hormone has been in use since the 1930s for the treatment of affective disorders. Despite numerous papers showing benefit, the lack of negative trials and its inclusion in multiple treatment guidelines, high dose thyroid has yet to find wide spread use. The major objection to the use of high dose thyroid is the myth that it causes osteoporosis. This paper reviews the literatur...

BACKGROUND Breast cancer is the most frequently diagnosed cancer and the leading global cause of cancer death among women worldwide. Radiotherapy plays a significant role in treatment of breast cancer and reduces locoregional recurrence and eventually improves survival. The treatment fields applied for breast cancer treatment include: tangential, axillary, supraclavicular and internal mammary f...