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최우석,고영태,임재훈,이선화,윤엽,이동호,임언,이봉암,김국기,김광명,김태성,Choi, Woo-Suk,Ko, Young-Tae,Lim, Jae-Hoon,Lee, Sun-Wha,Yoon, Yup,Lee, Dong-Ho,Leem, Won,Rhee, Bong-Arm,Kim, Gook-Ki,Kim, Kwang-Myung,Kim, Tae-Sung 대한영상의학회 1987 대한영상의학회지 Vol.23 No.1
The computed tomographic findings of cerebral arterial ectasia in 8 patients, of which 5 cases were angiographically documented, are reported. The ectatic arteries, located predominantly in the suprasellar and interpeduncular cisterns, appeared as serpiginous, tubular structures on the unenhanced scan. The enhanced CT scan demonstrated dense, sharply defined, homogeneous intraluminal enhancement. Until recently, the diagnosis of cerebral arterial ectasia was usually established by angiography. With introduction of CT it has become possible to noninvasively indentify and characterize this vascular disorder and its associated intracranial complications. The vertebrobasilar dolichoectasia may be diagnosed by CT as an extra-axial lesioin in the cerebellopontione angle. It enhances in a tubular fashion after intravenous injection of contrast.
김창석,최창주,이우선,오무송,김태성,김병인 조선대학교 에너지.자원신기술연구소 2001 에너지·자원신기술연구소 논문지 Vol.23 No.2
In this study, ZnO is evaporated to be coated on n-type Si wafer substrate. Refractive coefficient of thin film that is evaporating TiO₂onto ZnO increases linearly as thickness is getting thinner to have high value and high angle and it satisfies theoretical equation I(x)=Io exp (-αx) theory that represents the strength of photon energy advancing through ZnO thin film. And dielectric constant of TiO₂thin film evaporated onto ZnO is high and ε₂ is smaller than ε₁. The specimen TiO₂thin film evaporated onto ZnO has much higher dielectric constant when photon energy is increased.