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Kihong Son,Seunghyung Lee,Hyobin Lee,Yejin Lee,Dongwook Son,Seunghyeon Myeong,Minjoo Chang,Daehong Kim,Myung-Ae Chung 한국자기학회 2023 Journal of Magnetics Vol.28 No.4
This simulation study aims to differentiate between contrast media and calcification in blood vessel using the effective atomic number (EAN) extraction method in electromagnetic X-ray computed tomography (CT) imaging. Calibration was performed on six tissue-equivalent materials, three contrast medium, and one calcium solution. The Hounsfield unit (HU) values at 80 kV and 140 ㎸ with electromagnetic spectrum using dualenergy computed tomography (DECT) facilitated this calibration. EAN from the polynomial method was then compared with that from the Stoichiometric method. In 120 ㎸ vascular imaging, when the HU of calcium and iodine contrast media were alike, EAN provided a more pronounced contrast than HU. The iodine contrast agent’s enhancement in EAN was approximately 30.0 %, and in HU, it was 13.0 % relative to calcium. This indicates EAN’s potential to better differentiate contrast media from calcification in clinical contexts.