24 research outputs found
Analysis of Radiation-Induced Liver Disease (RILD) and Evaluation of Relationship Between Therapeutic Activity and Liver Clearance(C) Rate with Tc-99m-Mebrofenin(M) in Y-90 Microspheres Treatment(MT)
Blood clearance and occupational exposure for <sup>177</sup>Lu-DOTATATE compared to <sup>177</sup>Lu-PSMA radionuclide therapy.
Absorbed dose estimation of thyroid residues, salivary glands and distal metastases after I-131 therapy using SPECT/CT with scatter, dead time and partial volume correction
Determination of Approximate Fetal Dose in Nuclear Medicine Examinations: Evaluation of Pregnancy Care
Radiation exposure in 177Lu-PSMA & the possibility of applying outpatient treatment rules
Thyroid uptake test with portable device (COTI) after 131I tracer administration: proof of concept
Determination of radiation dose from patients undergoing Tc-99m Sestamibi nuclear cardiac imaging
4th International Conference on Computational and Experimental Science and Engineering (ICCESEN) -- OCT 04-08, 2017 -- Kemer, TURKEYWOS: 000478894500038To date, myocardial perfusion (MP) has been utilized to assess the adequacy of blood flow to the myocardium in order to determine the ischemic heart diseases. With the advent of SPECT/CT, MP became the most common investigation in the field of nuclear cardiology with more accuracy and details. Thallium-201 and Technetium-99m (Tc-99m) have been early used in cardiac nuclear imaging. Half-life of Tc-99m is 6 h, and its energy is 140 keV, while the half-life of Tl-201 is as longer as 73 h, its X-ray energies range between 69 and 81 kV in addition to gamma rays of 135 keV and 167 keV. The purpose of the present study was to explore the radiation dose rates emitted from the patients following Tc-99m sestamibi injection. To achieve that, the radiation emanated to the environment was measured at different distances from patients and various time intervals for 20 patients using GM counter. The mean radioactivity administered to the patients was 391.1 MBq (10.6 mCi), with a range between 276.8 MBq to maximum of 515.4 MBq. Radiation dose rate was found 9.07 mu Sv h(-1) at 1 m distance from the patient's chest level after 7.6 min, then decayed to 7.93 mu Sv h(-1) after 36.5 min, and 7.83 mu Sv h(-1) later to 66.4 min. It was concluded that 1 m distance from the patients sounds sensibly adequate to maintain the occupational dose within the safe limit following Tc-99m sestamibi injection, while verification of public dose rate <= 1 mu Sv h(-1) at 1 m distance from the patient prolongs to 14 h following Tc-99m injection