The Korean Journal of Nuclear Medicine Technology (핵의학기술)
- Volume 17 Issue 1
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- Pages.67-70
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- 2013
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- 1229-9901(pISSN)
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- 2982-8406(eISSN)
Evaluating the Impact of Attenuation Correction Difference According to the Lipiodol in PET/CT after TACE
간동맥 화학 색전술에 사용하는 Lipiodol에 의한 감쇠 오차가 PET/CT검사에서 영상에 미치는 영향 평가
- Cha, Eun Sun (Department of Nuclear Medicine, Samsung Medical Center) ;
- Hong, Gun chul (Department of Nuclear Medicine, Samsung Medical Center) ;
- Park, Hoon (Department of Nuclear Medicine, Samsung Medical Center) ;
- Choi, Choon Ki (Department of Nuclear Medicine, Samsung Medical Center) ;
- Seok, Jae Dong (Department of Nuclear Medicine, Samsung Medical Center)
- Received : 2013.01.31
- Accepted : 2013.04.03
- Published : 2013.04.27
Abstract
Purpose: Surge in patients with hepatocellular carcinoma, hepatic artery chemical embolization is one of the effective interventional procedures. The PET/CT examination plays an important role in determining the presence of residual cancer cells and metastasis, and prognosis after embolization. The other hand, the hepatic artery chemical embolization of embolic material used lipiodol produced artifacts in the PET/CT examination, and these artifacts results in quantitative evaluation influence. This study, the radioactivity density and the percentage error was evaluated by the extent of the impact of lipiodol in the image of PET/CT. Materials and Methods: 1994 NEMA Phantom was acquired for 2 minutes and 30 seconds per bed after the Teflon, water and lipiodol filled, and these three inserts into the enough to mix the rest behind radioactive injection with
급증하는 간세포암 환자에게 간동맥 화학 색전술은 효과적인 중재적 시술 방법 중 하나이다. 이때 PET/CT 검사는 색전 후 잔존 암세포의 존재 및 전이여부와 예후를 판단하는데 중요한 역할을 한다. 한편 간동맥 화학 색전술에 사용되는 색전물질인 Lipiodol은 PET/CT 검사에서 인공물을 생성하고 정량평가에 영향을 준다. 이에 본 연구는 Lipiodol이 영상에 미치는 영향의 정도를 방사능 값과 백분율 오차로 평가하고자 하였다. 1994 NEMA Phantom에 Lipiodol과 Teflon, 물을 세 개의 삽입물에 넣고 나머지 부분을 배후 방사능