Protection and Dosimetry: ALARA, BERT, Effective Dose, Equivalent Dose,
Absorbed Dose, Entrance Skin Exposure (ESE), Gonadal Dose, Bone Marrow
Dose, Ionization, Compton Scattering, Photoelectric Effect, High-LET
Radiation, Low-LET Radiation, Relative Biologic Effectiveness (RBE),
Stochastic Effects, Deterministic Effects, Acute Radiation Syndrome,
Prodromal Phase, Latent Period, Manifest Illness, Hematopoietic System,
Gastrointestinal System, DNA Strand Breaks, Free Radicals, Radiation
Weighting Factor (WR), Tissue Weighting Factor (WT), Collective Effective
Dose Exam Questions Verified and Provided with Complete A+ Graded
Rationales Latest Updated 2026
1, 2, and 3
A patient may choose to assume a relatively small statistical risk of exposure to ionizing radiation for a
physician to obtain essential diagnostic medical information when:
1. Illness occurs
2. Injury occurs
3. A specific imaging procedure for health screening purposes is called for
Radiation protection
Effective measures employed by radiation workers to safeguard patients, personnel, and the general
public from unnecessary exposure to ionizing radiation defines:
BERT
Which of the following is a method that can be used to answer patients' questions about the amount of
radiation received from a radiographic procedure?
,As low as reasonably achievable (ALARA)
The term optimization for radiation protection (ORP) is synonymous with which of the following?
A reduction in patient radiation dose
Monitoring and reporting of patient dose for CT and interventional procedures can lead to:
Exposure
The amount of ionization produced in the air when ionizing radiation is present is known as:
Diagnostic efficacy
The degree to which the diagnostic study accurately reveals the presence or absence of disease in the
patient while adhering to radiation safety guidelines defines which of the following terms?
1⁄1000 of a sievert
The millisievert (mSv) is equal to:
1 and 2 only
An effective radiation safety program requires a firm commitment to radiation safety by:
1. Facilities providing imaging services
2. Radiation workers
3. Patients
, Higher effective dose than would an adult, but the image produced will appear to be of acceptable
quality
If a child receives a dose of radiation in a CT scan where adult protocols are used, the child, because of
being smaller in size, will receive a:
1, 2, and 3
The amount of radiation actually received by a patient from a diagnostic x-ray procedure may be
indicated in terms such as:
1. Entrance skin exposure (ESE), which includes skin and glandular dose
2. Bone marrow dose
3. Gonadal dose
Ionization
Which of the following processes is the foundation for imaging of the interaction of x-rays with human
tissue?
It was extremely difficult to measure the amounts of radiation people received.
Why are the long-term effects, such as an increased incidence of cancer in the exposed population living
near Japan's Fukushima Daiichi Nuclear Plant, unable to be accurately determined?
2.3 mSv
According to the most recent available data from 2016, what is the radiation dose from natural
background radiation attributed to exposure from radon and thoron?
B. Radioactive elements in the crust of the Earth and in the human body