registry 2025 - biological reactions to radiation doses

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12 Terms

1
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Decrease in blood cell count dose threshold

250 mSv (0.25 Sv)

2
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50% loss of lymphocytes (leukopenia) dose threshold

500 mGy (0.50 Gy)

3
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chromosome aberration dose threshold

50 mGy (0.05 Gy)

4
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permanent sterility dose threshold

5 mGy (0.005 Gy)

5
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Temporary infertility dose threshold

2 Gy

6
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Skin erythema dose threshold

Around 2 Gy

7
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Epliation (hair loss) threshold dose

3 Gy

8
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Cataractogenesis dose threshold

2 Gy

9
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depressed sperm count dose and suppressed menstruation threshold dose

100 mGy (0.10 Gy)

10
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Average skin exposure in fluoroscopy

40 mGy per minute

11
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Skin desquamation (skin necrosis)

10 to 15 Gy

12
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Sentinel events

  • Patient safety event that results in death, temporary harm or permanent harm

  • 15 Gys or above