搜索优化
English
搜索
Copilot
图片
视频
地图
资讯
购物
更多
航班
旅游
酒店
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
过去 7 天
时间不限
过去 1 小时
过去 24 小时
过去 30 天
按时间排序
按相关度排序
腾讯网
2 天
非必要不做CT!Lancet和Nature子刊发文:超过这个剂量,脑癌风险高400 ...
在如今的医疗诊疗中,CT扫描无疑是让医生们洞察人体“秘密”的利器。然而,面对这项技术,我们不得不提出一个老生常谈的问题:辐射!虽然每次CT扫描的辐射剂量远远低于可能引发即刻伤害的水平,但问题的关键在于反复检查的“累积效应”。就像放入锅里的水,一开始温 ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果
今日热点
Plans to take over Gaza
RFK Jr. clears Senate panel
Wins Senate committee vote
Imposes tariffs on US goods
Arrested on multiple charges
Offers to jail US criminals
Sued by former nanny
Neo-Nazi leader convicted
Announces death of mother
EPA warns employees
Sweden school shooting
Adds surcharge to eggs
Microplastics found in brains
Accused attacker faces trial
US, Philippines joint patrol
Stradivarius violin auction
Mimics moon’s gravity
Inks deal with SK’s Kakao
‘Squid Game' actress dies
US job openings fall
Baby elephant at OR Zoo
To launch streaming service
Suspended 10 games
Sued for discrimination
DOJ to battle antisemitism
FSU coach stepping down
FBI agents sue DOJ
To cut up to 7,000 jobs
US begins migrant flights
Atmospheric river slams CA
反馈