问题
单项选择题
关于肺部CT扫描技术的描述，错误的是
A．扫描层厚的选择应小于病灶直径
B．屏气不佳可增加图像的运动伪影
C．肺间质病变应选薄层高分辨力扫描模式
D．增强扫描的扫描模式和参数须与平扫相同
E．增强扫描欲观察细微结构时，应选用高分辨力扫描模式
答案
参考答案：E
解析： 对于增强扫描来讲，高分辨力扫描降低了密度分辨力，反而不利于病灶的检出。
搜题请搜索小程序“爱下问搜题”
关于肺部CT扫描技术的描述，错误的是
A．扫描层厚的选择应小于病灶直径
B．屏气不佳可增加图像的运动伪影
C．肺间质病变应选薄层高分辨力扫描模式
D．增强扫描的扫描模式和参数须与平扫相同
E．增强扫描欲观察细微结构时，应选用高分辨力扫描模式
参考答案：E
解析： 对于增强扫描来讲，高分辨力扫描降低了密度分辨力，反而不利于病灶的检出。
| 阅读理解。 | |
| My family and I have ridden bikes around the island several times. My friends often ask me questions about biking with their families. I'm sorry to learn that some of them don't really enjoy biking or get hurt on the road because they don't prepare well. Here I want to share some things that I think are important before you start off:
| |
| 1. What is the writer talking about? | |
| A. How to fix a bike on the road. B. How to save money on a bike ride. C. Things to do for a safe and happy bike ride. D. Things to remember when you get hurt on the road. | |
| 2. Which is said in the reading? | |
| A. Biking is good for health. B. More and more people go to work by bike. C. Biking around the island is getting popular. D. The size of the bike is important for biking. |