1|Page
CHAPTER 34: STOCHASTIC EFFECTS OF RADIATION
BUSHONG: RADIOLOGIC SCIENCE FOR TECHNOLOGISTS:
PHYSICS, BIOLOGY, AND PROTECTION, 11TH EDITION
Radiation protection guidelines are based on _______________________.
a. stochastic effects of radiation
b. deterministic effects of radiation
c. lethal effects of radiation
d. Both A and B - Answer: a. stochastic effects of radiation
Studies of A-bomb survivors indicate that leukemia has a ______________________ dose-
response relationship to radiation.
a. nonlinear, threshold
b. linear, threshold
c. linear, nonthreshold
d. nonlinear, nonthreshold - Answer: c. linear, nonthreshold
Radiation-induced leukemia has a latent period of _______ years.
a. 1-2
b. 4-7
c. 5-10
d. 15-20 - Answer: b. 4-7
Ankylosing spondylitis patients treated with radiation showed an increased incidence of
_____________.
a. leukemia
b. cancer
c. early death
d. infertility - Answer: a. leukemia
, 2|Page
It is difficult to link cancer to radiation exposure because it occurs ___________ in the
population.
a. with severity
b. very rarely
c. in high proportion
d. only in the elderly - Answer: c. in high proportion
People who had radiation treatments to their thymus gland as children later showed excess risk
for ____________.
a. bone cancers
b. skin cancers
c. leukemia
d. thyroid cancers - Answer: d. thyroid cancers
People who were employed painting radium watch dials later showed excess risk for
______________ cancer.
a. bone
b. stomach
c. thyroid
d. mouth - Answer: a. bone
Relative risk is _________________.
a. expected cases/observed cases
b. observed cases/expected cases
c. observed cases - expected cases
d. expected cases - observed cases - Answer: b. observed cases/expected cases
Radiation induced skin cancer in radiotherapy patients has occurred with
_____________________.
CHAPTER 34: STOCHASTIC EFFECTS OF RADIATION
BUSHONG: RADIOLOGIC SCIENCE FOR TECHNOLOGISTS:
PHYSICS, BIOLOGY, AND PROTECTION, 11TH EDITION
Radiation protection guidelines are based on _______________________.
a. stochastic effects of radiation
b. deterministic effects of radiation
c. lethal effects of radiation
d. Both A and B - Answer: a. stochastic effects of radiation
Studies of A-bomb survivors indicate that leukemia has a ______________________ dose-
response relationship to radiation.
a. nonlinear, threshold
b. linear, threshold
c. linear, nonthreshold
d. nonlinear, nonthreshold - Answer: c. linear, nonthreshold
Radiation-induced leukemia has a latent period of _______ years.
a. 1-2
b. 4-7
c. 5-10
d. 15-20 - Answer: b. 4-7
Ankylosing spondylitis patients treated with radiation showed an increased incidence of
_____________.
a. leukemia
b. cancer
c. early death
d. infertility - Answer: a. leukemia
, 2|Page
It is difficult to link cancer to radiation exposure because it occurs ___________ in the
population.
a. with severity
b. very rarely
c. in high proportion
d. only in the elderly - Answer: c. in high proportion
People who had radiation treatments to their thymus gland as children later showed excess risk
for ____________.
a. bone cancers
b. skin cancers
c. leukemia
d. thyroid cancers - Answer: d. thyroid cancers
People who were employed painting radium watch dials later showed excess risk for
______________ cancer.
a. bone
b. stomach
c. thyroid
d. mouth - Answer: a. bone
Relative risk is _________________.
a. expected cases/observed cases
b. observed cases/expected cases
c. observed cases - expected cases
d. expected cases - observed cases - Answer: b. observed cases/expected cases
Radiation induced skin cancer in radiotherapy patients has occurred with
_____________________.
