ARRT Exam Prep Questions with Detailed Verified Answers

Page | 1


ARRT Exam Prep Questions with Detailed
Verified Answers

Question: A grade 3 morbidity score for the skin would indicate:

Ans✅ ✅: confluent moist desquamation

Question: The patient experiencing confluent mucositis should be
advised to:

Ans✅ ✅: avoid acidic foods

Question: Normal rectal temperature for the adult in Fahrenheit is:

Ans✅ ✅: 99.6 (Rectal temperature is approximately 1 degree higher than oral
temperature, which is 98.6 degrees Fahrenheit)

Question: An example of a nonstochastic effect from radiation exposure
is:

Ans✅ ✅: erythema (nonstochastic effect is an early effect. Erythema, or skin
reddening, is an example of an early response to radiation exposure)

Question: Which of the following is the energy of a photon detected by
Positron Emission Tomography (PET)?

Ans✅ ✅: 511 kV

Question: A reduction in overall treatment time without a change in
total dose is known as:

Ans✅ ✅: accelerated fractionation

Question: In order to evaluate the blood pressure a___________is
required.

Ans✅ ✅: sphygmomanometer

, Page | 2
Question: The Trendelenberg position is appropriate for a patient
experiencing a medical emergency such as:

Ans✅ ✅: shock (Trendelenberg position has the patient's feet slightly elevated to
promote blood flow to the heart)

Question: While moving a patient with a chest tube, the tube becomes
dislodged. The therapist should:

Ans✅ ✅: apply an airtight dressing over the opening

Question: Which of the following is true regarding stochastic effects of
radiation?

Ans✅ ✅: There is no dose threshold.

Question: The mediastinum contains which of the following lymph
nodes (select two):

Ans✅ ✅: Hilar + Subcarinal (mediastinum is the space between the sternum and
thoracic spine)

Question: A field with an approximate size of 21 x 19, having 1 to 2 cm
flash over the skull and having the inferior border at the base of the skull,
describes a treatment field for:

Ans✅ ✅: brain metastases

Question: Hair loss is usually permanent when the scalp is exposed to
radiation doses exceeding:

Ans✅ ✅: 60 Gy

Question: The lumen size for a urinary catheter is expressed in:

Ans✅ ✅: French

Question: A chemical substance(s) used to kill pathogens on equipment
is/are called a/an:

, Page | 3
Ans✅ ✅: disinfectant

Question: Although tamoxifen reduces the risk of breast cancer, what
type of cancer may be a side effect of tamoxifen therapy?

Ans✅ ✅: endometrial

Question: A triangular-shaped surface landmark often used in radiation
therapy that partially covers the external auditory meatus is known as
the:

Ans✅ ✅: tragus!

Question: The photoelectric process is essentially an interaction
between a photon and:

Ans✅ ✅: bound electron

Question: Custom shielding blocks that are divergent reduce:

Ans✅ ✅: beam edge cutoff

Question: When the primary beam penetrates an object, much of it is
scattered in all directions. This is known as:

Ans✅ ✅: secondary radiation

Question: The traditional unit of absorbed dose equivalent is the:

Ans✅ ✅: REM

Question: Wilm's tumor originates in the:

Ans✅ ✅: kidney (pediatric malignancy originating in the kidney)

Question: Two or more chemicals with the same chemical formula, but
having different nuclear states are known as:

Ans✅ ✅: isomers

Question: The clavicle and 1st rib articulate with the:

, Page | 4
Ans✅ ✅: manubrium

Question: Which of the following is NOT true of a four-field box field
arrangement delivered using an SAD treatment technique?

Ans✅ ✅: Field size is defined on the patient skin surface. (Field size is defined at the
isocenter in an SAD treatment technique)

Question: X-ray photons that have been emitted but have not yet
struck the patient is referred to as:

Ans✅ ✅: primary

Question: Which of the following best describes an isodose curve?

Ans✅ ✅: Points within the patient receiving the same dose are joined together
forming a curve.

Question: Which of the following imaging modalities is NOT an example
of functional imaging?

Ans✅ ✅: CT (anatomical imaging)

Question: During gamma knife radiosurgery, gamma radiation is
focused toward the target by:

Ans✅ ✅: several sources with energy directed through collimated spaces in the
gamma helmet

Question: For breast irradiation, internal mammary lymphatics would
be best treated using:

Ans✅ ✅: an anterior e- field (Internal mammary nodes are located approximately 3
cm below the anterior surface in patients of normal body habitus)

Question: Moh's surgery may be used to establish diagnosis and staging
of which type of cancer?

Ans✅ ✅: Moh's surgery

Question: A low residue diet would be recommended for the patient
receiving radiation to the: