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Chapter 1 Key Terms Rad Bio

Total questions: 22

Worksheet time: 11mins

Name
Class
Date
1.

What is the term for the transfer of energy from one location to another?

a)

Radiation

b)

Conduction

c)

Evaporation

d)

Condensation

2.

What is the term for radiation with enough energy to remove tightly bound electrons from atoms, creating ions?

a)

Ionizing radiation

b)

Non-ionizing radiation

c)

Thermal radiation

d)

Visible light

3.

What is the measure of the amount of ionization produced in air when ionizing radiation is present called?

a)

Exposure

b)

Absorbed dose

c)

Half-life

d)

Activity

4.

What is the SI unit of radiation exposure that describes the amount of charge produced in a kilogram of air by x- or gamma radiation?

a)

Coulomb per kilogram (C/kg)

b)

Gray (Gy)

c)

Sievert (Sv)

d)

Becquerel (Bq)

5.

What is a subunit of the roentgen; 1 mR = 1/1000 of a roentgen, historically used to describe exposure in air?

a)

Milliroentgen (mR)

b)

Microroentgen (μR)

c)

Megaroentgen (MR)

d)

Milliampere (mA)

6.

What is the term for the amount of energy deposited by ionizing radiation per unit mass of material (tissue)?

a)

Absorbed dose

b)

Effective dose

c)

Exposure

d)

Activity

7.

What is the SI unit of absorbed dose?

a)

Gray (Gy)

b)

Sievert (Sv)

c)

Becquerel (Bq)

d)

Curie (Ci)

8.

What is a subunit of the gray; 1 mGy = 1/1000 of a gray, commonly used for patient dose in diagnostic imaging?

a)

Milligray (mGy)

b)

Microgray (μGy)

c)

Megagray (MGy)

d)

Nanogray (nGy)

9.

What is the dose quantity that accounts for the absorbed dose, the type of radiation, and the relative radiosensitivity of the tissues exposed; represents overall potential biological harm?

a)

Effective dose

b)

Absorbed dose

c)

Equivalent dose

d)

Exposure

10.

What is the SI unit used for equivalent and effective dose that relates dose to biological effect?

a)

Sievert (Sv)

b)

Gray (Gy)

c)

Becquerel (Bq)

d)

Curie (Ci)

11.

What is a subunit of the sievert; 1 mSv = 1/1000 of a sievert, commonly used to express patient and occupational doses?

a)

Millisievert (mSv)

b)

Centisievert (cSv)

c)

Microsievert (μSv)

d)

Kiloseivert (kSv)

12.

What is the term for changes in living cells and tissues that occur as a result of exposure to ionizing radiation?

a)

Biologic effects

b)

Genetic drift

c)

Thermal expansion

d)

Osmotic pressure

13.

What are effective measures used by radiation workers to safeguard patients, personnel, and the public from unnecessary exposure to ionizing radiation called?

a)

Radiation protection

b)

Radiation emission

c)

Radiation therapy

d)

Radiation enhancement

14.

What is the guiding principle stating that radiation exposures should be kept as low as reasonably achievable, considering economic and social factors?

a)

ALARA (As Low As Reasonably Achievable)

b)

Inverse Square Law

c)

Half-Life Principle

d)

Maximum Permissible Dose

15.

What is another term for ALARA, emphasizing the continuous optimization of techniques and procedures to minimize dose?

a)

Optimization for radiation protection (ORP)

b)

Maximum Permissible Dose (MPD)

c)

Radiation Dose Limit (RDL)

d)

Threshold Limit Value (TLV)

16.

Fill in the blank: ________ is the degree to which an imaging study accurately shows the presence or absence of disease while adhering to radiation safety principles.

a)

Diagnostic efficacy

b)

Image resolution

c)

Radiation dose

d)

Contrast sensitivity

17.

Fill in the blank: ________ is the probability of injury, disease, or death as a result of a particular exposure or activity—in this context, exposure to ionizing radiation.

a)

Risk

b)

Dose

c)

Exposure

d)

Contamination

18.

Fill in the blank: ________ is a way of explaining patient dose by comparing it to the amount of natural background radiation received over a specified length of time.

a)

Background equivalent radiation time (BERT)

b)

Effective dose equivalent (EDE)

c)

Radiation weighting factor (RWF)

d)

Annual dose limit (ADL)

19.

Fill in the blank: ________ is a partnership of medical organizations focused on raising awareness and promoting dose reduction in pediatric imaging.

a)

Alliance for Radiation Safety in Pediatric Imaging

b)

American College of Surgeons

c)

World Health Organization

d)

National Institutes of Health

20.

Fill in the blank: ________ is an Image Gently initiative that teaches safe pediatric fluoroscopy practices, emphasizing pulsed fluoroscopy, low pulse rates, and child-appropriate technique.

a)

Pause and Pulse: Image Gently in Fluoroscopy Campaign

b)

Radiation Reduction Revolution

c)

Safe Scan for Kids Program

d)

Pediatric Imaging Awareness Drive

21.

Fill in the blank: ________ are typical dose levels for standard imaging procedures, derived from surveys, used as benchmarks to compare and optimize local practice.

a)

Reference values

b)

Maximum limits

c)

Exposure rates

d)

Threshold doses

22.

Fill in the blank: ________ are pre-set patient dose or exposure thresholds that, when approached or exceeded, trigger review, documentation, and possible modification of imaging practice.

a)

Alert levels

b)

Reference values

c)

Exposure limits

d)

Diagnostic ranges