试题与答案

在X线摄影检查中,如何尽量控制和减少运动性模糊.

题型:问答题 简答题

题目:

在X线摄影检查中,如何尽量控制和减少运动性模糊.

答案:

参考答案:(1)固定人体

(2)选择肢体运动幅度小或静止的机会曝光

(3)尽量缩小曝光时间

(4)把肢体尽量靠近胶片

(5)尽可能增加焦点到胶片距离

试题推荐
题型:单项选择题

WebSQL is a SQL-like (71) language for extracting information from the web. Its capabilities for performing navigation of web (72) make it a useful tool for automating several web-related tasks that require the systematic processing of either all the links in a (73) , all the pages that can be reached from a given URL through (74) that match a pattern, or a combination of both. WebSQL also provides transparent access to index servers that can be queried via the Common (75) Interface.

A.Router

B.Device

C.Computer

D.Gateway

查看答案
题型:单项选择题

妊娠合并心脏病孕妇分娩期血流动力学变化,下述哪项是错误的

A.第一产程,规律宫缩使周围循环阻力增加,回心血量减少
B.第二产程,宫缩加上腹压,周围阻力增大
C.第二产程,腹压增高使内脏血流涌向心脏,回心血量增加
D.第三产程,子宫迅速缩小,腹压减低,大量血液流回内脏血管,回心血管减少
E.第三产程,胎儿娩出后子宫胎盘循环停止,大量血液进入体循环,回心血量增加

查看答案
微信公众账号搜索答案