GROSS ANATOMY

GROSS ANATOMY

RADIOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Exposure to radiation:
A
no matter how small, has the potential to cause harmful biological changes
B
has a threshold, below which exposure is entirely safe
C
is safer when there is a single, large dose rather than a series of smaller doses
D
from a dental x ray machine does not involve particulate radiation and is completely safe
Explanation: 

Detailed explanation-1: -Any exposure to radiation, no matter how small, has the potential to cause: harmful biologic changes in the operator and the patient. Types of x-radiation include: primary radiation, secondary radiation, and scatter radiation.

Detailed explanation-2: -Any exposure to radiation, no matter how small, has the potential to cause biologic changes to the operator and the patient.

Detailed explanation-3: -Deterministic effects are usually predictable and reproducible. For example, localized doses to certain parts of the body at increasing levels will result in well-understood biological effects. Some examples of deterministic effects include: Radiation-induced skin burns.

Detailed explanation-4: -Do Dental Assistants Need To Protect Themselves From X-ray Radiation? Not any more than the training received to use x-ray machines suggests. Of course, any machine that emits radiation should be used with caution, but the amount of radiation is really very small and is tightly directed at the patient.

Detailed explanation-5: -Organs and cells with high sensitivity to radiation injury are the skin, the hematopoietic system, the gastrointestinal (GI) tract, spermatogenic cells, and the vascular system.

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