Environmental Radiation Doses from Patients Undergoing Tc-99m DMSA Cortical Renal Scintigraphy

Year 2019, , 86 - 93, 31.07.2019

Osman Günay , Mucize Sarıhan Evrim Abamor Onur Yarar

https://doi.org/10.22399/ijcesen.589267

Cited By: 16

Abstract

Ionizing
radiation is often used for imaging in health applications. One of them is
scintigraphic method. one of the radiation emitters used in nuclear medicine is
technesium-99m (Tc-99m). This isotope releases gamma rays at about the same wavelength
as conventional X-ray diagnostic equipment, with 140 keV gamma ray energy which
has a ideal short half-life (t_½ = 6 h)  for diagnostic nuclear imaging. Before
imaging, the patient is injected with Tc-99m. After injecting Tc-99m, the
patient begins to emit radiation to the environment. Determination of this
radiation dose emitted by the patient is very important for public health. The
main objective of this study was to determine the environmental radiation doses
in patients undergoing Tc-99m DMSA cortical renal scintigraphy. In this study,
the radiation dose rate emitted by the patient about 5, 35 and 68 minutes after
Tc-99m injection was measured at different distances from the patient. As a
result of this study, the mean radiation dose at 5.07, 35.60 and 68.57 minutes
after injection was found to be 5.06 µSvh^-1, 4.76 µSvh^-1 and
4.18 µSvh^-1 at a distance of 100 cm from the patient's chest level,
respectively. The results are important in terms of knowing the radiation dose
to which the patient will be exposed. 

Keywords

DMSA, Radiation Dose, Tc-99m

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