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双能量CT去除颅骨和硬化斑块定量分析钙化颈动脉狭窄的应用及与数字减影血管造影的对照性研究 被引量:30
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作者 K.Uotani y.watanabe +4 位作者 M.Higashi T.Nakazawa A.K.Kono Y.Hori 郭雪梅 《国际医学放射学杂志》 2009年第5期519-520,共2页
本研究对双能(DE)CTA和双能去除颅骨和硬化斑块(DE硬化斑块去除)定量钙化性颈动脉狭窄进行了评价,并将其结果与数字减影血管造影(DSA)结果进行了对照。18条有致密钙化的狭窄颈动脉血管(13例)接受了双源CT的双能量模式(管电压1... 本研究对双能(DE)CTA和双能去除颅骨和硬化斑块(DE硬化斑块去除)定量钙化性颈动脉狭窄进行了评价,并将其结果与数字减影血管造影(DSA)结果进行了对照。18条有致密钙化的狭窄颈动脉血管(13例)接受了双源CT的双能量模式(管电压140kV和80kV)检查。采用商用软件从双能量影像上去除颅骨和硬化斑块。 展开更多
关键词 双源CT 颈动脉狭窄 双能量CT 颈动脉斑块 CTA
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Near Real-Time Calculation of Ionospheric Electric Fields and Currents Using GEDAS 被引量:1
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作者 H.Shirail Y.Kamide +7 位作者 E.A.Kihn B.Hausman M.Shinohara H.Nakata M.Isowa T.K.Takada y.watanabe S.Masuda 《Chinese Journal of Astronomy and Astrophysics》 CSCD 北大核心 2003年第4期375-380,共6页
This paper presents the recent progress in our project of estimating near real-time electric fields and currents in the ionosphere through our computer system called the Geospace Environment Data Analysis System (GEDA... This paper presents the recent progress in our project of estimating near real-time electric fields and currents in the ionosphere through our computer system called the Geospace Environment Data Analysis System (GEDAS). We show a new technique in which data from ground magnetometers are collected by the system and used as input for the KRM and AMIE programs to calculate the distribution of ionospheric electric fields and currents, as well as of other ionospheric parameters, such as electric potential patterns. One of the goals of this project is to specify ionospheric processes. Examples of the near real-time calculation and the data flow of our scheme are presented. 展开更多
关键词 data analysis-solar-terrestrial relations
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