ASRT MOCK 1 QUESTIONS & ANSWERS
When a patient is treated with a source to axis distance (SAD) of 12 cm, what would the
source to surface distance (SSD) be? - Answers - 88cm
If an orthogonal pair is taken with the first angle at 215 degrees, what would the second
angle be? - Answers - 305 degrees
_________ is an external landmark often used when setting up whole brain treatments.
- Answers - EAM
A radiation therapist who is 37 years old should not have a lifetime effective dose
exceeding: - Answers - 370 mSv
What is the Tolerance Dose for 5% risk at 5 years (TD 5/5) for the kidney? - Answers -
23 Gy - 2300 cGy
What is the most common breast cancer diagnosis? - Answers - Infiltrating ductal
carcinoma
A whole body dose of 100-1000 cGy would cause symptoms from which syndrome? -
Answers - hematopoetic
215 monitor units (MU) will be delivered during a 315 degree arc. How many MUs per
degree will be delivered? - Answers - .68 mu/degree
A pituitary adenoma is a: - Answers - benign tumor
Thrombocytopenia is a condition in which the patient has a reduced number of: -
Answers - platelets
The most common side effect of patients being treated with external beam radiation
therapy to the vagina is: - Answers - dyspareunia
Hounsfield units measure: - Answers - attenuation
According to the American Joint Committee on Cancer staging system, T1b glottic
cancer involves: - Answers - both vocal cords
Which organization is responsible for establishing suggested dose limits for safe
practices within the United States? - Answers - National Council on Radiation
Protection and Measurements (NCRP)
, NRC (Nuclear Regulatory Commission) - Answers - regulates nuclear power industry,
issues licenses and approves design, construction and operation of nuclear power
plants
Areas where the dose equivalent exposure is 0.1 rem/week are classified as: - Answers
- controlled areas
What is the Tolerance Dose for 5% risk at 5 years (TD 5/5) for the whole liver? -
Answers - 30 Gy
A patient presenting with unilateral hearing loss and an enlarged cervical lymph node
should be evaluated for suspected lesion relating to which primary diagnosis: - Answers
- nasopharyngeal
The most common histology for cancer of the brain is: - Answers - Astrocytoma
If the hinge angle of two radiation beams is 150 degrees, what should the wedge angle
be? - Answers - 15 degrees
A keloid is a: - Answers - Excessive accumulation of scar tissue extending beyond the
original wound borders
A _________ can be used to compensate for an irregular skin surface. - Answers -
bolus
What is the single most effective way of preventing the spread of infection? - Answers -
Washing your hands
Esophageal radiation field margins should include ___ above and below the tumor to
account for nodular drainage. - Answers - 6 cm
As the field size increases, the percentage depth dose curve (PDD): - Answers -
increases
Which of the following is not part of the oral cavity? - Answers - base of the tongue
The IMRT x-ray output consistency should be checked on a(n) __________ basis. -
Answers - monthly
A whole body dose of 1000-5000 cGy would result in what type of acute radiation
syndrome? - Answers - gastrointestinal
When preforming time out procedures, patient identity can be confirmed with: - Answers
- an ID bracelet
What are the energy values for Cobalt-60 decay? - Answers - 1.17 MeV and 1.33 MeV
When a patient is treated with a source to axis distance (SAD) of 12 cm, what would the
source to surface distance (SSD) be? - Answers - 88cm
If an orthogonal pair is taken with the first angle at 215 degrees, what would the second
angle be? - Answers - 305 degrees
_________ is an external landmark often used when setting up whole brain treatments.
- Answers - EAM
A radiation therapist who is 37 years old should not have a lifetime effective dose
exceeding: - Answers - 370 mSv
What is the Tolerance Dose for 5% risk at 5 years (TD 5/5) for the kidney? - Answers -
23 Gy - 2300 cGy
What is the most common breast cancer diagnosis? - Answers - Infiltrating ductal
carcinoma
A whole body dose of 100-1000 cGy would cause symptoms from which syndrome? -
Answers - hematopoetic
215 monitor units (MU) will be delivered during a 315 degree arc. How many MUs per
degree will be delivered? - Answers - .68 mu/degree
A pituitary adenoma is a: - Answers - benign tumor
Thrombocytopenia is a condition in which the patient has a reduced number of: -
Answers - platelets
The most common side effect of patients being treated with external beam radiation
therapy to the vagina is: - Answers - dyspareunia
Hounsfield units measure: - Answers - attenuation
According to the American Joint Committee on Cancer staging system, T1b glottic
cancer involves: - Answers - both vocal cords
Which organization is responsible for establishing suggested dose limits for safe
practices within the United States? - Answers - National Council on Radiation
Protection and Measurements (NCRP)
, NRC (Nuclear Regulatory Commission) - Answers - regulates nuclear power industry,
issues licenses and approves design, construction and operation of nuclear power
plants
Areas where the dose equivalent exposure is 0.1 rem/week are classified as: - Answers
- controlled areas
What is the Tolerance Dose for 5% risk at 5 years (TD 5/5) for the whole liver? -
Answers - 30 Gy
A patient presenting with unilateral hearing loss and an enlarged cervical lymph node
should be evaluated for suspected lesion relating to which primary diagnosis: - Answers
- nasopharyngeal
The most common histology for cancer of the brain is: - Answers - Astrocytoma
If the hinge angle of two radiation beams is 150 degrees, what should the wedge angle
be? - Answers - 15 degrees
A keloid is a: - Answers - Excessive accumulation of scar tissue extending beyond the
original wound borders
A _________ can be used to compensate for an irregular skin surface. - Answers -
bolus
What is the single most effective way of preventing the spread of infection? - Answers -
Washing your hands
Esophageal radiation field margins should include ___ above and below the tumor to
account for nodular drainage. - Answers - 6 cm
As the field size increases, the percentage depth dose curve (PDD): - Answers -
increases
Which of the following is not part of the oral cavity? - Answers - base of the tongue
The IMRT x-ray output consistency should be checked on a(n) __________ basis. -
Answers - monthly
A whole body dose of 1000-5000 cGy would result in what type of acute radiation
syndrome? - Answers - gastrointestinal
When preforming time out procedures, patient identity can be confirmed with: - Answers
- an ID bracelet
What are the energy values for Cobalt-60 decay? - Answers - 1.17 MeV and 1.33 MeV
