Late Effects of Radiation Practice Questions

Question 1

The somatic non-stochastic effect of radiation is seen

Accepted Answer

As effects on the body irradiated

Answer

As effect of mutation

Answer

As hereditary phenomenon

Answer

All of the options

Question 2

Radiation exposure can lead to which type of thyroid carcinoma?

Accepted Answer

Papillary carcinoma

Answer

Lymphoma

Answer

Medullary carcinoma

Answer

Follicular carcinoma

Question 3

Radiation causes cell death by:

Accepted Answer

Ionization

Answer

Charring of nucleoproteins

Answer

Disruption of cytosol

Answer

Destroying their mitochondria

Question 4

Which of the following is most sensitive to radiation

Accepted Answer

Lymphocyte

Answer

Stem cells

Answer

Skin

Answer

Bone

Question 5

Which of the following is a stochastic effect of radiation?

Accepted Answer

Genetic mutation

Answer

Alopecia in the irradiated portal

Answer

Local desquamation in the irradiated field

Answer

All of the options

Question 6

What is the threshold radiation dose for the hematological syndrome?

Accepted Answer

2 Gy

Answer

6 Gy

Answer

15 Gy

Answer

50 Gy

Question 7

Which of the following is NOT a radioprotector?

Accepted Answer

BUDR

Answer

Amifostine

Answer

IL-1

Answer

GM-CSF

Question 8

What is observed in the part of the bone which received radiotherapy?

Accepted Answer

More destruction of bone

Answer

Response to radiotherapy is good

Answer

Fast healing

Answer

Tumor regression is not affected

Question 9

Which of the following statements about Linear Energy Transfer (LET) is true?

Accepted Answer

High LET radiations have a low oxygen enhancement ratio.

Answer

Low LET radiations are more lethal.

Answer

It is a property of the tissue.

Answer

It is the same as relative biological effectiveness.

Question 10

Acute radiation hepatic damage is most marked between which time period?

Accepted Answer

40-100 days

Answer

1-7 days

Answer

7-21 days

Answer

21-40 days

Late Effects of Radiation — MCQs

Late Effects of Radiation — MCQs

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