超声内镜一点知识_讲义课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,ENDOSCOPIC ULTHASOUND SYSTEM,哈医大二院,许吉成,EUS imaging/ therapy概念,a EUS endoscopic ultrasound system,EUS endoscopic ultra-sonography,EUS guided fine-needle,aspiration, FNA,-EUS guided fine-needle injection, FNI,体表超声,概念,A- amplitude mode:幅度,B- brightness mode:辉度,C- constant depth mode:等深,D-doppler mode:多普乐,M- motion mode:慢扫描锯齿波,体腔内超声,概念,经直肠前列腺超声,经阴道盆腔超声,经食管心脏超声,消化道内镜下超声,双重作用黏膜表面+黏膜下,频率,范围:20KHz超声波,2、应用:5、7.5、12、20MHz,3、效果:低频率胃肠周围脏器,高频率黏膜、胃肠壁各层,4、固定、可调,