问题 问答题 简答题

简述CT检查概念

答案

参考答案:

在观察分析CT图像时,应先了解扫描的技术与方法,是平扫还是增强扫描。正常时增强扫描动脉期扫描范围内动脉显影清晰,静脉期静脉显影清晰,部分检查需要延迟期,此时动脉与静脉均显影较淡。根据病变密度高于、等于、低于所在器官的密度分为高密度、等密度和低密度病变。发现病变要分析病变密度、位置、大小、形状、数目和边缘,如行增强扫描则应分析病变有无密度上的变化,即有无强化。此外还要观察邻近器官和组织的受压、移位、浸润和破坏等。

阅读理解

A rich man was ill in hospital, and the doctor feared that his life was ending soon. He called together his three sons and gave them the challenge, ‘One of you will get all my money. To decide which of you can get the money, I am going to give each of you a dollar. Go today and buy something that can fill this room.”

In the evening, they all came back. Child number one went to his friend’s farm and bought two bales of hay (两捆干草) with the dollar. He brought the hay and threw it up into the air. But it couldn’t fill the room.

Child number two went to a shop and bought two pillows made with feathers(羽毛). He then opened them and threw the feathers all over the room. All the feathers settled down on the floor and the room was still not filled.

The third son took out a candle and said, “I bought a box of matches and a candle then I gave the rest to a charity.” He lit the candle and turned off the lights, and the room was filled.

“ Well done, my son. You will get all my money because you understand a very important lesson about life. You understand how to let your light shine. That is good.” said the father.

小题1:The rich man wanted to give all his money to one of his sons because _______.

A.he was dying

B.he was too old to work

C.he wanted to know which son was the cleverest

D.he want something special小题2:Child number two ________.

A.asked his father for help

B.bought nothing

C.gave the money to charity

D.got feathers in a shop小题3:From the passage we can know _______.

A.the third son is honest and friendly

B.the father is satisfied with the third son

C.child number one is the cleverest

D.candle is a good gift for family小题4:What’s the best title of the passage?

A.Let Your Light Shine

B.A Rich Man and His Three Sons

C.How to Get Money

D.The Cleverest Son

单项选择题