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WorksheetsChapter 1 Key Terms Rad Bio
Total questions: 22
Worksheet time: 11mins
What is the term for the transfer of energy from one location to another?
Radiation
Conduction
Evaporation
Condensation
What is the term for radiation with enough energy to remove tightly bound electrons from atoms, creating ions?
Ionizing radiation
Non-ionizing radiation
Thermal radiation
Visible light
What is the measure of the amount of ionization produced in air when ionizing radiation is present called?
Exposure
Absorbed dose
Half-life
Activity
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?
Coulomb per kilogram (C/kg)
Gray (Gy)
Sievert (Sv)
Becquerel (Bq)
What is a subunit of the roentgen; 1 mR = 1/1000 of a roentgen, historically used to describe exposure in air?
Milliroentgen (mR)
Microroentgen (μR)
Megaroentgen (MR)
Milliampere (mA)
What is the term for the amount of energy deposited by ionizing radiation per unit mass of material (tissue)?
Absorbed dose
Effective dose
Exposure
Activity
What is the SI unit of absorbed dose?
Gray (Gy)
Sievert (Sv)
Becquerel (Bq)
Curie (Ci)
What is a subunit of the gray; 1 mGy = 1/1000 of a gray, commonly used for patient dose in diagnostic imaging?
Milligray (mGy)
Microgray (μGy)
Megagray (MGy)
Nanogray (nGy)
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?
Effective dose
Absorbed dose
Equivalent dose
Exposure
What is the SI unit used for equivalent and effective dose that relates dose to biological effect?
Sievert (Sv)
Gray (Gy)
Becquerel (Bq)
Curie (Ci)
What is a subunit of the sievert; 1 mSv = 1/1000 of a sievert, commonly used to express patient and occupational doses?
Millisievert (mSv)
Centisievert (cSv)
Microsievert (μSv)
Kiloseivert (kSv)
What is the term for changes in living cells and tissues that occur as a result of exposure to ionizing radiation?
Biologic effects
Genetic drift
Thermal expansion
Osmotic pressure
What are effective measures used by radiation workers to safeguard patients, personnel, and the public from unnecessary exposure to ionizing radiation called?
Radiation protection
Radiation emission
Radiation therapy
Radiation enhancement
What is the guiding principle stating that radiation exposures should be kept as low as reasonably achievable, considering economic and social factors?
ALARA (As Low As Reasonably Achievable)
Inverse Square Law
Half-Life Principle
Maximum Permissible Dose
What is another term for ALARA, emphasizing the continuous optimization of techniques and procedures to minimize dose?
Optimization for radiation protection (ORP)
Maximum Permissible Dose (MPD)
Radiation Dose Limit (RDL)
Threshold Limit Value (TLV)
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.
Diagnostic efficacy
Image resolution
Radiation dose
Contrast sensitivity
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.
Risk
Dose
Exposure
Contamination
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.
Background equivalent radiation time (BERT)
Effective dose equivalent (EDE)
Radiation weighting factor (RWF)
Annual dose limit (ADL)
Fill in the blank: ________ is a partnership of medical organizations focused on raising awareness and promoting dose reduction in pediatric imaging.
Alliance for Radiation Safety in Pediatric Imaging
American College of Surgeons
World Health Organization
National Institutes of Health
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.
Pause and Pulse: Image Gently in Fluoroscopy Campaign
Radiation Reduction Revolution
Safe Scan for Kids Program
Pediatric Imaging Awareness Drive
Fill in the blank: ________ are typical dose levels for standard imaging procedures, derived from surveys, used as benchmarks to compare and optimize local practice.
Reference values
Maximum limits
Exposure rates
Threshold doses
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.
Alert levels
Reference values
Exposure limits
Diagnostic ranges
