American Society for Nondestructive Testing (ASNT) Radiographic Testing Practice Test

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Which dose range is considered dangerous or potentially fatal for the entire body in a short time frame?

1.5 - 15R

25 - 70R

200 - 800R

The range of 200 to 800 roentgens (R) is considered particularly dangerous because this level of radiation exposure can lead to acute radiation syndrome (ARS), which affects multiple organ systems and can be fatal. Doses within this range can cause significant cellular damage, leading to symptoms such as nausea, vomiting, and in severe cases, organ failure and death.

At lower doses in the other ranges, while they may still pose health risks, the likelihood of immediate and severe health consequences is much lower. For instance, doses between 1.5 and 15R are relatively low and typically do not result in immediate health effects. Similarly, while doses from 25 to 70R can lead to delayed effects and have potential long-term health implications, they are not as acutely dangerous as those in the higher range. In contrast, the greater severity of exposure in the 200 to 800R range underscores the high risk of lethality associated with such dosages.

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All of the above doses would most likely be fatal

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