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放射性检查的危险
原作者: Rob Rogers,肖锋译 发布日期:2013-05-02

Title: Radiation Risk
题目:放射性检查的危险
Author 作者:Rob Rogers

Be afraid....be very afraid.... 谨慎。。。再谨慎。。。
Risk is based on acute exposure and is extrapolated largely from atomic bomb survivors.
危险主要是基于急性暴露,大部分的结论来源于原子弹爆炸的生存者。
Effective radiation dose = Sievert (Sv)


有效放射量=希沃特(Sv)
Adults 成人: 

Lifetime Attributable Risk of Cancer 1:1000 at 10mSv

10mSv导致一生中癌症发病率为1:1000
Lifetime Attributable Risk of Cancer Mortality 1:2000 at 10mSv
 

10mSv导致一生中癌症死亡率为1:2000
Risk is Cumulative
危险程度是有累加效应的

Pediatrics 儿童:

Lifetime Attributable Risk of Cancer is greater than for adults and is age-dependent

导致一生中癌症的发病率要比成人高,并与年龄相关
Lifetime Attributable Risk of Cancer Mortality 1:1000 at 10mSv


10mSv导致一生中癌症死亡率为1:1000
Common Effective Dose Estimates (mSv)


常见有效剂量的估计值(mSv)
Background radiation  宇宙辐射                   3.5/year 3.5/年

CXR 胸片                                             0.1

CT
   
Head, Face 头,面                              2
   
Neck, Cervical Spine 颈部,颈椎               2
   
Chest, Thoracic Spine 胸部,胸椎               8
   
Abdomen  腹部                              7.5
   
Pelvis 盆腔                                    7.5
   
Abdomen/Pelvis, Lumbar Spine 腹部/盆腔,腰椎 15
   
Extremity 肢体                              0.5
 

Note that it doesn't take very much radiation to reach the 10 mSv level!
请注意,并不需要接受太多的射线就可达到10mSv的水平!
Bottom line: CT if you need to, but carefully consider whether it is worth it or not
要点:如有必要,可做CT,否则的化,需要仔细考虑其意义