Radiation Exposure Effects

Exposure

Exposure

Health Effect

(rem)

(mSv)

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