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下列不是胎儿十二指肠闭锁的超声表现的是()。

发布日期:2021-07-04

下列不是胎儿十二指肠闭锁的超声表现的是()。
A

双泡征

B

心脏下方的空泡为胃泡

C

肝脏下方的空泡为扩张的十二指肠肠管

D

羊水过多

E

结肠扩张

试题解析

十二指肠闭锁

十二指肠闭锁(duodenal atresia)是1997年公布的医学名词。

中文名
十二指肠闭锁
所属学科
医学
外文名
duodenal atresia
公布时间
1997年

超声波

超声波是一种波长极短的机械波,在空气中波长一般短于2cm(厘米)。它必须依靠介质进行传播,无法存在于真空(如太空)中。它在水中传播距离比空气中远,但因其波长短,在空气中则极易损耗,容易散射,不如可听声和次声波传得远,不过波长短更易于获得各向异性的声能,可用于清洗、碎石、杀菌消毒等。在医学、工业上有很多的应用。

中文名
超声波
功率密度
p≥0.3W/cm
所属学科
物理学
外文名
Ultrasound
波长
λ≤2cm
应用领域
医学、工业

表现

表现,汉语词汇,拼音是biǎo xiàn,意思是施展出来;显露出来。

中文名
表现
拼音
biǎo xiàn
释义
施展出来;显露出来
外文名
expression
近义词
表达﹑表露﹑表示﹑发挥﹑体现
注音
ㄅㄧㄠˇ ㄒㄧㄢˋ

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此试题出现在

北京住院医师

北京住院医师医学影像科

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