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Physics 3 - Test 2

Terms in this set (54)

What are the three acute radiation syndromes?
Hematoligic, GI, CNS
The immediate response to radiation that includes signs and symptoms of radiation sickness
Prodromal period
Hematologic Syndrome occurs at
2-10 Gyt

Survivable: 10-60 days
CNS Syndrome occurs at
>50

Survivable: 0-3 days
Gastrointestinal Syndrome occurs at
10-50 Gyt

Survivable: 4-10 days
What is LD 50/60?
Dose in which 50% of the population will die within 60 days
Prodromal Period
immediate response to radiation (nausea, vomiting diarrhea), aka radiation sickness. Lasts from a few hours to a couple days

Dose: >1
What is the latent period?
The amount of time that elapses between exposure to ionizing radiation and the appearance of observable clinical signs.

Dose: 1-100 Gyt
Which of the radiation syndromes is possibly survivable?
Hematologic
When the dose limit is high enough for GI syndrome, what else is happening?
severe version of hematologic
If the dose is high enough for CNS syndrome, there is not enough time for _____
Hematologic and GI syndrome
What is the Latent Period?
No outward signs of radiation sickness, mistaken for early recover-NOT, biological and physiological changes taking place, lasts form a few hours to a few weeks
What is manifest Illness Period?
Dose related period characterized by possible vomiting, mild diarrhea, malaise, lethargy and fever. Apparent stage
Describe local tissue damage that occurs when any part of the human body receives high radiation exposure.
Significant cell death usually results, leading to the shrinkage of organs and tissues, a process referred to as atrophy
What is SED50?
dose at which 50% of those exposed will develop skin erythema
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