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http://dx.doi.org/10.7742/jksr.2022.16.2.95

Study of the Difference in Residual Amounts according to the Method of Securing Intravenous Injections and the Dose of Physiological Saline during 18F-FDG Administration  

Ryu, Chan-Ju (Department of Nuclear medicine, Bundang Cha Hospital)
Publication Information
Journal of the Korean Society of Radiology / v.16, no.2, 2022 , pp. 95-102 More about this Journal
Abstract
This study compares the difference between the remaining amount in syringes according to injection method and the dose of physiological saline when the radiopharmaceutical 18F-FDG isotope is injected into patients who visited the hospital for PET examination. After performing a CT or MRI using a contrast medium when 18F-FDG was injected into 40 patients who came to the hospital for PET examination without removing the 3-way, the radioactivity remaining in the syringe and the 3-way was measured and the dose of radioactivity confirmed. At this time, 20 patients were divided into different dose groups of physiological saline. Another injection method was used to compare the remaining amount of the syringe and the difference in the remaining amount according to the amount of physiological saline when the injection was performed with an extension. After an injection of 18F-FDG, the actual administered dose was confirmed by measuring the radioactivity remaining in the syringe and the 3-way or extension with a calibrator. As a result of measuring the radioactivity of the syringe before administering the radiopharmaceutical and the radioactivity of the syringe and the 3-way or extension after administration, the 3-way injection method in 10 cc's of physiological saline had the lowest residual amount. The remaining amount increased in the order of the extension to 10 cc's of saline and the 3-way to 5 cc's of saline. Likewise, the 5 cc's saline solution and the extension injection method demonstrated the highest residual amounts. The residual difference with the lowest level of remaining injection method was found to be 0.053 mCi. It was found that in a PET examination, by considering the radioactivity remaining in the 3-way and extension and by adjusting the dose of physiological saline, if the intended dose to be administered to the actual patient is determined, it is possible to administer the radiopharmaceutical to the patient more accurately.
Keywords
Residual activity; $^{18}F-Fluorodeoxyglucose$; IV (Intravenous line) method; standardized uptake value;
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Times Cited By KSCI : 5  (Citation Analysis)
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