Rad Protection 1 & 2 Comp Review
In this quiz, we’ll be looking at the proper methods for the protection of people from harmful effects of exposure to ionizing radiation. What do you know about these safety protocols? Let’s find out right now!
Questions and Answers
- 1.
Which of the following is the unit of absorbed radiation dose
- A.
RBE
- B.
Sievert (rem)
- C.
Gray (rad)
- D.
Coulomb/kg (roentgen)
- E.
LET
Correct Answer
C. Gray (rad)Explanation
The unit of absorbed radiation dose is the gray (Gy). The gray is a unit of measurement for the amount of radiation energy absorbed by an object or person. It takes into account the type of radiation and its effect on the human body. The gray is used in radiation therapy and radiology to ensure safe and effective treatment and imaging procedures. The other options listed are not units of absorbed radiation dose.Rate this question:
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- 2.
For x-ray & gamma photons with energies up to 3 meV, which of the follow quantities may be defined as the measure of the total electric charge (of one sign, either all pluses or all minuses) per unit mass that these radiations generates in air only?
- A.
Exposure
- B.
Absorbed dose
- C.
Dose Equivalent
- D.
Collective Eff Dose Eq.
Correct Answer
A. ExposureExplanation
Exposure is the measure of the total electric charge per unit mass that radiation generates in air. It quantifies the amount of ionization that occurs in the air due to the radiation. Absorbed dose, on the other hand, measures the energy deposited by the radiation per unit mass in a material. Dose equivalent takes into account the biological effects of different types of radiation. Collective effective dose equivalent is the sum of the individual dose equivalents of a group of individuals exposed to radiation.Rate this question:
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- 3.
Rad is the unit of
- A.
Roentgen atomic dose
- B.
Radiation absorbed dose
- C.
Radiation abstracted dose
- D.
Roentgen absorbed dose
Correct Answer
B. Radiation absorbed doseExplanation
The correct answer is "Radiation absorbed dose". The unit "rad" is used to measure the amount of radiation absorbed by an object or living tissue. It quantifies the energy deposited by ionizing radiation in a specific mass of material. This unit helps in assessing the potential biological effects of radiation exposure.Rate this question:
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- 4.
Which of the following provides a method by which to calculate the realistic absorbed dose for all types of radiation, including protons and neutrons as well as x-rays?
- A.
Absorbed Dose
- B.
Dose Equivalent
- C.
Exposure
- D.
Ionization of air
Correct Answer
B. Dose EquivalentExplanation
Dose Equivalent provides a method to calculate the realistic absorbed dose for all types of radiation, including protons, neutrons, and x-rays. It takes into account the different biological effects of different types of radiation and is measured in units called Sieverts (Sv). Dose Equivalent is calculated by multiplying the absorbed dose by a quality factor, which represents the biological effectiveness of the specific type of radiation. This allows for a more accurate assessment of the potential harm caused by different types of radiation.Rate this question:
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- 5.
The ____is the traditional unit of exposure or intensity in air for x-ray and gamma ray photons.
- A.
Curie
- B.
Rad
- C.
Rem
- D.
Roentgen
Correct Answer
D. RoentgenExplanation
The Roentgen is the traditional unit of exposure or intensity in air for x-ray and gamma ray photons. It measures the amount of ionizing radiation produced by these photons in a specific volume of air. The other options, Curie, Rad, and Rem, are units of radioactivity, absorbed dose, and equivalent dose, respectively, and are not specifically related to measuring exposure or intensity in air for x-ray and gamma ray photons.Rate this question:
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- 6.
X-rays, beta particles (high speed electrons) and gamma rays have been given a numeric adjustment value of 1 because they produce
- A.
Virtually the same biologic effect in body tissue for equal absorbed doses
- B.
No biological effect in body tissue for equal absorbed dose
- C.
Varying degrees of biologic effect in body tissue for equal absorbed doses
- D.
High-dose biologic effects in all body tissues for equal absorbed doses
Correct Answer
A. Virtually the same biologic effect in body tissue for equal absorbed dosesExplanation
X-rays, beta particles, and gamma rays have been given a numeric adjustment value of 1 because they produce virtually the same biologic effect in body tissue for equal absorbed doses. This means that regardless of the type of radiation, when the same amount of radiation is absorbed by the body tissue, the biological effect on the tissue is similar. This adjustment value allows for a standardized way of comparing the potential harm caused by different types of radiation.Rate this question:
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- 7.
Which is the SI unit of exposure
- A.
C/kg (Coulomb oer kilo)
- B.
Gy (Gray)
- C.
R (Roentgen)
- D.
Sv (Sievert)
Correct Answer
D. Sv (Sievert)Explanation
The SI unit of exposure is Sv (Sievert). The Sievert is a unit used to measure the health effects of ionizing radiation on the human body. It takes into account the type of radiation and the sensitivity of different organs and tissues to that radiation. This unit is commonly used in radiation protection and medical applications to quantify the potential harm caused by radiation exposure.Rate this question:
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- 8.
Which of the following is used to adjust the absorbed dose value to measure biological effects of different types of ionizing radiation
- A.
Exposure absorbed dose raio
- B.
Ionization factor
- C.
Quality factor
- D.
Rate of linear energy transfer
Correct Answer
C. Quality factorExplanation
The quality factor is used to adjust the absorbed dose value to measure the biological effects of different types of ionizing radiation. It takes into account the varying levels of damage caused by different types of radiation. The quality factor assigns a weighting factor to each type of radiation, reflecting its relative biological effectiveness. This allows for a more accurate assessment of the potential harm caused by different types of ionizing radiation.Rate this question:
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- 9.
The SI unit for measurement of quantity, absorbed dose, for any type of ionizing radiations is the:
- A.
Becquerel
- B.
Gray
- C.
Roentgen
- D.
Sievert
Correct Answer
B. GrayExplanation
The SI unit for measurement of quantity, absorbed dose, for any type of ionizing radiations is the gray. The gray is a unit used to measure the amount of energy deposited in a material by ionizing radiation. It is defined as the absorption of one joule of radiation energy per kilogram of matter. This unit is commonly used in fields such as radiation therapy and radiology to quantify the amount of radiation absorbed by a patient or a material.Rate this question:
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- 10.
The _________is the traditional unit of Dose Equivalent (DE)
- A.
Curie
- B.
RAD
- C.
REM
- D.
Roentgen
Correct Answer
C. REMExplanation
The REM (Roentgen Equivalent Man) is the traditional unit of Dose Equivalent (DE). It is used to measure the biological effect of ionizing radiation on the human body. The REM takes into account both the type of radiation and its energy, as different types of radiation have different levels of biological damage. The unit is named after Wilhelm Roentgen, the discoverer of X-rays.Rate this question:
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- 11.
To determine absorbed dose, the amount of energy absorbed by the irradiated object must be measured by which of the following methods?
- A.
Determining the quantity of energy deposited per kilogram of the object
- B.
Calculating the skin-entrance exposure of the object
- C.
Calculating either the dose equivalent or the equivalent dose
- D.
Determining the quantity of ionization in a specific volume of dry air at atmospheric pressure
Correct Answer
A. Determining the quantity of energy deposited per kilogram of the objectExplanation
The correct answer is determining the quantity of energy deposited per kilogram of the object. Absorbed dose is a measure of the amount of energy absorbed by an object when exposed to radiation. It is typically measured in units of gray (Gy), which is equal to one joule of energy absorbed per kilogram of the object. Therefore, to determine absorbed dose, the amount of energy absorbed per kilogram of the object needs to be measured.Rate this question:
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- 12.
If absorbed dose is stated in rad, gray may be determined by performing which of the following equations.
- A.
X by 100
- B.
+ by 100
- C.
/ by 100
- D.
- by 100
Correct Answer
C. / by 100Explanation
To determine gray from rad, the absorbed dose in rad needs to be divided by 100. Gray is the SI unit for absorbed dose, while rad is the older unit. Dividing the absorbed dose in rad by 100 converts it to gray.Rate this question:
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- 13.
If the absorbed dose equivalent is stated in sievert, the number of rem may be translated (converted) simply by:
- A.
X by 100
- B.
+ by 100
- C.
/ by 100
- D.
- by 100
Correct Answer
A. X by 100Explanation
To convert absorbed dose equivalent from sievert to rem, you need to multiply the value by 100. This is because 1 sievert is equal to 100 rem. Therefore, to convert from sievert to rem, you multiply by 100.Rate this question:
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- 14.
325 gray equals which of the following
- A.
32.5 rad
- B.
32,500 rad
- C.
3,250 roentgen
- D.
325 sievert
Correct Answer
B. 32,500 radExplanation
The question is asking for the equivalent of 325 gray in another unit of measurement. The correct answer is 32,500 rad, as rad is a unit of absorbed radiation dose equal to 100 ergs per gram of tissue. Therefore, 325 gray is equal to 32,500 rad.Rate this question:
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- 15.
35,000 rem equals which of the following
- A.
35 gray
- B.
35 sievert
- C.
350 sievert
- D.
3500 coulomb oer kilo
Correct Answer
C. 350 sievert -
- 16.
39 sievert equals
- A.
3900 rem
- B.
39 rem
- C.
390 gray
- D.
39000 gray
- E.
390,000 rem
Correct Answer
A. 3900 rem -
- 17.
Which factors determine dose equivalent
- A.
Rad x Q
- B.
Rem x R
- C.
Gy x Q
- D.
A & C only
Correct Answer
D. A & C onlyExplanation
The factors that determine dose equivalent are Rad x Q and Gy x Q. Rad is the unit of absorbed dose, Q is the quality factor that accounts for the type of radiation, and Gy is the unit of absorbed dose in the International System of Units. Therefore, options A and C are the correct factors that determine dose equivalent.Rate this question:
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- 18.
How is Roentgen determined
- A.
Absorbed dose
- B.
Compared with rems
- C.
Half-Value layer
- D.
Ionization in air
Correct Answer
D. Ionization in airExplanation
Roentgen is determined by measuring the ionization in air caused by X-rays or gamma rays. This measurement is used to quantify the amount of radiation exposure. Absorbed dose, rems, and half-value layer are all related to radiation, but they do not directly determine Roentgen.Rate this question:
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- 19.
Which of the following statement concerning the Roentgen is true?1. It is measured by ions in air2. It only measures x & gamma rays3. It is the unit of exposure or intensity
- A.
1 only
- B.
1 & 2
- C.
1 & 3
- D.
3 only
- E.
1, 2, & 3
Correct Answer
E. 1, 2, & 3Explanation
The Roentgen is a unit used to measure the exposure or intensity of x-rays and gamma rays. It is measured by ions in the air, making statement 1 true. Additionally, statement 2 is true because the Roentgen only measures x-rays and gamma rays. Finally, statement 3 is true because the Roentgen is indeed the unit of exposure or intensity. Therefore, the correct answer is 1, 2, & 3.Rate this question:
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- 20.
Absorbed energy is responsible for any biologic damages caused by exposure of tissues to radiation
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because absorbed energy is indeed responsible for biologic damages caused by exposure of tissues to radiation. When tissues are exposed to radiation, the energy from the radiation is absorbed by the tissues. This absorbed energy can cause damage to the cells and DNA within the tissues, leading to various biologic effects such as cell death, mutations, and potential development of diseases like cancer. Therefore, it is important to minimize exposure to radiation and take necessary precautions to protect tissues from absorbing excessive energy.Rate this question:
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- 21.
Which of the following is the unit of choice to express the collective effective dose
- A.
Group-gray (group rad)
- B.
Person coulomb per kilo (person-roentgen)
- C.
Person-sievert (man-rem)
- D.
Group -coulomb (group-roentgen)
Correct Answer
C. Person-sievert (man-rem)Explanation
The unit of choice to express the collective effective dose is person-sievert (man-rem). This unit combines the concept of dose (measured in sieverts) with the concept of risk (measured in person-rem). It takes into account both the amount of radiation absorbed by an individual and the potential health effects associated with that dose. The term "man-rem" is an older term that is being phased out in favor of the term "person-sievert", but both refer to the same unit of measurement.Rate this question:
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- 22.
The concept of tisue weighting factor (W t) is used to do which of the following
- A.
Eliminate the need for determining effective dose
- B.
Measure absorbed dose from all different types of ionizing radiations
- C.
Account for the risk to the entire organism brought on by irradiation of individual tissues and organs
- D.
Modify the radiation weighting factor for differnt types of ionizing radiations
Correct Answer
C. Account for the risk to the entire organism brought on by irradiation of individual tissues and organsExplanation
The concept of tissue weighting factor (Wt) is used to account for the risk to the entire organism brought on by irradiation of individual tissues and organs. It takes into consideration the varying sensitivities of different tissues and organs to radiation and assigns a weight to each based on their relative importance in terms of radiation-induced risks. This allows for a more accurate assessment of the overall risk to the organism from exposure to ionizing radiation.Rate this question:
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- 23.
Which of the following radiation quantities accounts for some biologic tissues being more sensitive to radiation damage than other tissues?
- A.
Absorbed dose
- B.
Effective dose
- C.
Equivalent dose
- D.
Exposure
Correct Answer
B. Effective doseExplanation
Effective dose takes into account the different sensitivities of various tissues to radiation damage. It is calculated by multiplying the absorbed dose with the radiation weighting factor and tissue weighting factor. The radiation weighting factor accounts for the type of radiation, while the tissue weighting factor reflects the radiosensitivity of different organs and tissues. Therefore, effective dose provides a more accurate measure of the potential harm caused by radiation exposure to different tissues in the body.Rate this question:
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- 24.
Which of the following terms describes the amount of energy per unit mass transfered from an x-ray beam to an object
- A.
SI
- B.
Exposure
- C.
Dose Equivalent
- D.
Absorbed dose
Correct Answer
B. ExposureExplanation
Exposure is the correct answer because it refers to the amount of energy per unit mass that is transferred from an x-ray beam to an object. It is a measure of the ionization produced in the air by x-ray or gamma radiation. It is commonly used to assess the potential biological effects of radiation exposure.Rate this question:
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- 25.
The amount of energy transferred from primary radiation to matter as it interacts with the molecules of the object is called
- A.
Absorbed dose
- B.
Cellular activity
- C.
Dose equivalent
- D.
Exposure
Correct Answer
A. Absorbed doseExplanation
The correct answer is absorbed dose. Absorbed dose refers to the amount of energy transferred from primary radiation to matter as it interacts with the molecules of an object. It is a measure of the energy deposited per unit mass in the object and is commonly used in radiation therapy and radiology to quantify the amount of radiation absorbed by a patient or an object.Rate this question:
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- 26.
Which of the following are by-products of Photoelectric absorption interactions with matter
- A.
Bremsstrahlung radiation
- B.
Characteristic radiation
- C.
Photoelectrons
- D.
B & C
- E.
A, B, & C
Correct Answer
D. B & CExplanation
The correct answer is B & C. Bremsstrahlung radiation and characteristic radiation are both by-products of photoelectric absorption interactions with matter. Bremsstrahlung radiation is produced when a charged particle is accelerated or decelerated by the electric field of an atomic nucleus, while characteristic radiation is emitted when an electron transitions from a higher energy level to a lower energy level within an atom. Photoelectrons are also produced during photoelectric absorption, as they are the electrons that are ejected from an atom when it absorbs a photon.Rate this question:
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- 27.
Which of the following particles is considered to be a form of antimatter
- A.
Electron
- B.
Positron
- C.
Xray Photon
- D.
Scattered xray photon
Correct Answer
B. PositronExplanation
A positron is considered to be a form of antimatter. Antimatter is composed of particles with the same mass as their matter counterparts but with opposite charge. The positron is the antiparticle of the electron, having the same mass but a positive charge instead of a negative charge. When a positron and an electron come into contact, they annihilate each other, releasing energy in the form of gamma rays. This property of antimatter makes it useful in various scientific and medical applications, such as positron emission tomography (PET) imaging.Rate this question:
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Mar 21, 2023Quiz Edited by
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Jul 12, 2009Quiz Created by
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