Radiation Exposure Effects

Exposure (rem) Exposure (mSv) Health Effects
0.001 0.01

Dental x-ray

0.01 0.1

Chest x-ray

0.04 0.4

Mammogram

<1 <10

Whole body doses to most Fukushima & surrounding area residents

1 10

Full-body CT scan

1.2 12

Average effective dose for Japanese workers over 19 months

5 to 10 50 to 100

Changes in blood chemistry

10 100

Recommended limit for radiation workers every 5 years

35 350

Exposure of Chernobyl resident who were relocated

40 400

Maximum radiation levels/hour recorded at Fukushima March 14, 2011

50 500

Nausea; increased risk of cancers

55 550

Fatigue

70 700

Vomiting within hours of exposure

75 750

Hair loss after 2 weeks

90 900

Diarrhea

100 1,000

Can cause radiation sickness & nausea but not death

200 to 300 2,000 to 3,000

Highest Japanese workers exposure doses

500 5,000

Single dose that could kill half of those exposed

600 6,000

Typical dose recorded in Chernobyl workers who died within a month

1,000 10,000

Internal bleeding & death within 2 weeks