讨论 1 有文献报道[3]当某些金属、合金材料,尤其磁性物质进入mri磁场中,会在一定范围产生" 黑区 "( black area ),使相应区域的影像消失、模糊,组织和结构变形等,这种在mri磁场中所造成的现象统称为伪影(artifact).
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女儿是一位摄影师,住在巴黎的玛黑区--哦,真是个好地方,母亲说道,粗糙的脸上有了生气。
Their daughter, a photographer, lived in the Marais ?oh, a charming place, the mother said, her coarse features animated.
传真机先扫瞄印刷文字和图像数据,然后把这些影像转为数字码:1代表黑区,0代表白区。
Fax machines scan printed text and graphics and convert the image into a digital code: 1 for dark areas, 0 for white areas.
用非接触型镜面反射显微镜对100名正常人角膜内皮行扫描检查;中央内皮黑区的发现率为16%。
The corneal endothelium of 100 normal subjects was examined by scanning with the noncontact clinical specular microscope.
It's not too far from downtown. Haight-Ashbury's right here.
离市区不远。海特-黑什伯里区就在那里。
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