Akumulace 99m-Tc-technecistanu ve štítné žláze

The objective of this bachelor thesis is to answer the following research question: "What is the extent of normal values of Technetium-99m accumulation in the thyroid gland?" I gained the answer by collecting data and subsequently assessing results of static scintigraphy of thyroid gland examined in 34 patients at the Department of Nuclear Medicine in the hospital Nemocnice České Budějovice. The reference file of patients was collected from January to December 2017. On the basis of clinical data on the examination request form, the supervisor excluded results that showed symptoms of hypothyroidism, hyperthyroidism or thyroiditis. The anatomy and physiology of the thyroid gland and parathyroid glands are described in the introduction of the theoretical part of the bachelor thesis. The following chapter characterizes thyroid disorders. The last chapter describes the examination of thyroid gland using methods of nuclear medicine, check-up, radiopharmaceutical drugs used and making and processing an image. The practical part describes the procedure of elaborating my bachelor thesis at the Department of Nuclear Medicine in the hospital Nemocnice České Budějovice. There I worked with evaluating computer program Xeleris with the Thyroid Uptake Index application. I plotted the region of interest around the thyroid gland manually and calculated the value of accumulation in the thyroid gland with a programme. I processed the gained values statistically using formulas to count the average, standard deviation and percentile in Microsoft Excel. I fixed the percentile for 10 % and 90 %. Calculations show that a normal value of Technetium-99m accumulation in the thyroid gland ranges from 0.4 % to 1.8 % and the average is 0.85 %. This work can serve as evaluation of normal values of accumulation during examining thyroid gland at departments of nuclear medicine.