Influence of Iodinated Contrast Media and Paramagnetic Contrast Media on Changes in Uptake Counts of Tc-99m
- Authors
- Cho, Jae-Hwan; Lee, Jin-Hyeok; Park, Cheol-Soo; Lee, Sun-Yeob; Lee, Jin; Moon, Deog-Hwan; Lee, Hae-Kag
- Issue Date
- Sep-2014
- Publisher
- 한국자기학회
- Keywords
- CT contrast media; MR contrast media; Tc-99m isotope; Uptake ratio
- Citation
- Journal of Magnetics, v.19, no.3, pp 248 - 254
- Pages
- 7
- Journal Title
- Journal of Magnetics
- Volume
- 19
- Number
- 3
- Start Page
- 248
- End Page
- 254
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/11895
- DOI
- 10.4283/JMAG.2014.19.3.248
- ISSN
- 1226-1750
2233-6656
- Abstract
- The purpose of this study is to figure out how uptake counts of technetium (Tc-99m) among radioisotopes in the human body are affected if computed tomography (CT), magnetic resonance imaging (MRI) and isotope examination are performed consecutively. Tc-99m isotope material, iodinated contrast media for CT and paramagnetic contrast media for magnetic resonance (MR) were used as experimental materials. First, Tc-99m was added to 4 cc normal saline in a test tube. Then, 2 cc of CT contrast media such as Iopamidol and Dotarem were diluted with 2 cc normal saline, and 2cc of IVIRI contrast media such as Primovist and Gadovist were diluted with 2 cc normal saline. Each distributed contrast media was a total of 4 cc and included 10m Ci of 99"Tc. A gamma camera, a LEHR (Low energy high resolution) collimator and a pin-hole coffimator were used for image acquisition. Image acquisition was repeated a total of 6 times and 120 frames were obtained and uptake counts of Tc-99m were measured (from this procedure). In this study, as a result of measuring the uptake counts of Tc-99m using the LEHR collimator, the uptake counts were less measured in all contrast media than normal saline as a reference. In particular, the lowest uptake counts were measured when Gadovist, contrast media for MIRE, was used. However, the result of measuring the uptake counts of Tc-99m using the pin-hole collimator showed higher uptake counts in all contrast media, except for Iopamidol, than normal saline as a reference. The highest uptake counts were measured particularly when Primovist, contrast media for MIRE, was used. In performing the gamma camera examination using contrast media and Tc-99m, it is considered significant to check the changes in the uptake counts to improve various diagnosis values.
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