Chapter 11 Challenge exercise
Questions and All Correct Answers.
The unit of radiation exposure is the: - Answer Gray-a
The amount of X-ray absorbed by the irradiated tissue, or patient, is called the: - Answer
Absorbed dose
The absorbed dose in the body based on the type and energy of matter is called the: - Answer
Equivalent dose
X-ray photons have a radiation weighting factor of : - Answer 1
The measurement units of exposure, absorbed dose and equivalent dose are: - Answer
Exposure: Gray-a
Absorbed:Gray-t
Equivalent: sievert(SV)
Convert 0.10Gy-a to mGy-a - Answer 100 mGy-a
In our everyday work, the equivalent dose is used for: - Answer Radiation protection
purposes
Describe ESE - Answer Entrance skin exposure
The Law of Bergonie and Tribondeau tells us what about radiation exposure - Answer The
relative sensitivity of cells in the body to radiation
name the four characteristics of the law Bergonie- Tribondeau - Answer 1. Age
2. Differentiation
3. Metabolic
4. Mitotic rate
Describe the radiation sensitivity difference between a younger patient's cells and an older
patient's cells - Answer Younger patients, especially babies and children, are considerably
more sensitive to the effects of radiation exposure than are adults.
, Describe the radiation sensitivity difference between simple cells and highly complex cells -
Answer Simple cells are more sensitive than highly specialized ones.
Name serval cells in the body that would be very sensitive to radiation - Answer Blood cells,
blood producing cells, thyroid gland, female breast.
Name several cells in the body that would not be very sensitive to radiation - Answer Nerve
cells, muscle cells, and cortical bone
Name four ways in which radiation effects in the body are classified - Answer 1. Short Term
2. Long term
3. Somatic
4. Genetic
Which radiation effect would be seen in about 3 months - Answer Short term effects
Long- term effects from radiation exposure are often referred to as - Answer not predictable
In diagnostic radiology, we are most concerned about which radiation effects - Answer Long-
term effects
When radiation damage affects the reproductive cells of the irradiated person, this effect is the -
Answer Genetic effect
An observable short-term effect of radiation exposure is called - Answer Erythema, or
reddening of the skin
Describe the lethal dose(LD) 50/30 - Answer Lethal dose, or LD 50/30 means that 50% of the
population would die in 30 days.
What is the LD for human beings - Answer 3000 to 4000 mGy
How much radiation does the skin have to receive for an erythema to develop - Answer 2000
mSV
Which effect of radiation exposure is not predictable - Answer Long-term effects
Questions and All Correct Answers.
The unit of radiation exposure is the: - Answer Gray-a
The amount of X-ray absorbed by the irradiated tissue, or patient, is called the: - Answer
Absorbed dose
The absorbed dose in the body based on the type and energy of matter is called the: - Answer
Equivalent dose
X-ray photons have a radiation weighting factor of : - Answer 1
The measurement units of exposure, absorbed dose and equivalent dose are: - Answer
Exposure: Gray-a
Absorbed:Gray-t
Equivalent: sievert(SV)
Convert 0.10Gy-a to mGy-a - Answer 100 mGy-a
In our everyday work, the equivalent dose is used for: - Answer Radiation protection
purposes
Describe ESE - Answer Entrance skin exposure
The Law of Bergonie and Tribondeau tells us what about radiation exposure - Answer The
relative sensitivity of cells in the body to radiation
name the four characteristics of the law Bergonie- Tribondeau - Answer 1. Age
2. Differentiation
3. Metabolic
4. Mitotic rate
Describe the radiation sensitivity difference between a younger patient's cells and an older
patient's cells - Answer Younger patients, especially babies and children, are considerably
more sensitive to the effects of radiation exposure than are adults.
, Describe the radiation sensitivity difference between simple cells and highly complex cells -
Answer Simple cells are more sensitive than highly specialized ones.
Name serval cells in the body that would be very sensitive to radiation - Answer Blood cells,
blood producing cells, thyroid gland, female breast.
Name several cells in the body that would not be very sensitive to radiation - Answer Nerve
cells, muscle cells, and cortical bone
Name four ways in which radiation effects in the body are classified - Answer 1. Short Term
2. Long term
3. Somatic
4. Genetic
Which radiation effect would be seen in about 3 months - Answer Short term effects
Long- term effects from radiation exposure are often referred to as - Answer not predictable
In diagnostic radiology, we are most concerned about which radiation effects - Answer Long-
term effects
When radiation damage affects the reproductive cells of the irradiated person, this effect is the -
Answer Genetic effect
An observable short-term effect of radiation exposure is called - Answer Erythema, or
reddening of the skin
Describe the lethal dose(LD) 50/30 - Answer Lethal dose, or LD 50/30 means that 50% of the
population would die in 30 days.
What is the LD for human beings - Answer 3000 to 4000 mGy
How much radiation does the skin have to receive for an erythema to develop - Answer 2000
mSV
Which effect of radiation exposure is not predictable - Answer Long-term effects
