|The modified protocol of thyroid scintigraphy with 99m Tc pertechnetate
Before the creation of the modern gamma camera the scintigraphy of the thyroid gland, the uptake of the 99mTc pertechnetate in 20 minute and the calculation of the mass and surface of the thyroid gland was conducted separately. Various equipment and methods were used for estimation of the given features. The process has been repeated several times as activity was injected into the patient. Different authors define diverse limits (N. Peshev: 2-4.68%, average 3.2%; Harvey Zeisman: 0.3 – 4.5%; Hamunyela-Kotze: 0.04 – 2.40%, W. Van‘t Hoff: 1.8+/- 1.1 – 2.4 +/-2.2%). The aim of this study is to create a personal clinical routine record which will contribute for the development of the uptake of 99mТс pertechnetate. This will thus help for the obtaining of both fast and full overall information about the morphology and functions of the gland. The duration of the examination is equal to the one of a normal planar thyroid scintigraphy. 449 patients have been tested for the purpose of this research. We measured pre- and post-injection activity and static imaging of the thyroid gland with 99mTc pertechnetate. The received limits of the normal function of the thyroid gland was in between 1.05 +1.4 per cent.
Key words:THYROID. UPTAKE. SCINTIGRAPHY