Question

8. Why is a reset timer important in fluoroscopy and what might the consequences be both in exposure to the clinician and patient if the timer were disabled and the procedure to continue without the timer? 9. During the Chernobyl nuclear reactor incident, what was the average dose to people living within 100 miles of the reactor facility? What, approximately, was the average dose to people living within 100 miles of the Fukushima reactor facility in Japan during its reactor incident? Which accident was more likely to produce significant radiation exposures to the public and wildlife living near the nuclear plant and why? 10. What are cytogenetic effects from radiation exposure? Describe the following three major radiation syndromes in detail as well as what cell types are involved and how damage to these critical cells produces the observed syndromes. a. Hematological Syndrome b. Gastrointestinal (GI) Syndrome c. Neurological (CNS) Syndrome

Answer 1

8- A reset timer is important in fluroscopy for the lower amount of exposure to radiation.
If fluroscopy is carried out with disabled timer , the exposure to the larger amounts of radiation will be there which results in skin burns and skin cancers.

10- cytogenetic effects of radiation exposure-:

a) skin burns

b) hair loss

c) sterility

d) cataracts

e) cancers, brain tumors and hematopoisis

1- hematological syndrome- it occurs when the henatopoitic stem cells of bone marrow and spleen get exposed to the radiations. Symptoms may be anemia , hemorrage and infection.

2- gastointestinal syndrome- radiation damage the epithelial cells of intestinal villi or mucosa. Clinical symptoms may be diarrohea, dehydration and septicemia.

3- neurological syndrome- a patient may have brain tumors due to prolonged radiation exposure.