RADIATION THERAPY MOCK EXAM 1
Which of the following types of treatments is normally accomplished using a source to
skin distance of 50 cm or more:
1. Superficial
2. Supervoltage
3. Orthovoltage
4. Megavoltage
A. 1 & 3
B. 2 & 4
C. 1, 2, and 3
D. All choices - Correct Answers -B. 2 & 4
The most common solid tumor in children is:
A. Retinoblastoma
B. ALL
C. Ewings Sarcoma
D. Medulloblastoma - Correct Answers -D. Medulloblastoma
Which of the following methods can be used for calibration?
A. Ionization
B. Photographic
C. Thermoluminescent dosimetry
D. All choices - Correct Answers -D. All choices
All are true regarding the location of the spleen EXCEPT:
A. Between T11-L3
B. Close to the 9th-11th ribs
C. End 5 cm to the midline
D. Lies posteriorly in the left hypochondrium - Correct Answers -A. Between T11-L3
Primary CNS Tumors use the following staging system:
A. Ann Arbor Staging
B. FIGO
,C. French American British staging
D. Grade staging - Correct Answers -D. Grade staging
Malfunction of radiation monitoring devices may occur due to:
1. Power failure
2. Humidity
3. Damage to probe
4. Meter failure
A. 1 only
B. 2 only
C. 1 & 3
D. 1, 3, and 4 only - Correct Answers -D. 1, 3, and 4 only
When calibrating ionization chambers, which of the following correction factors is NOT
needed?
A. Barometric pressure
B. Elevation
C. Temperature
D. Beam energy - Correct Answers -D. Beam energy
The most common metastatic site from head and neck cancer is:
A. Brain
B. Bone
C. Lung
D. Liver - Correct Answers -C. Lung
Which radiation monitoring device is composed of ferrous sulfate, sodium chloride, and
sulfuric acid?
A. TLD
B. OSL
C. Fricke dosimeter
D. Ionization chamber
E. Cutie Pie - Correct Answers -C. Fricke dosimeter
The instrument used for recording higher energy gamma and x-radiation and beta
particles specifically for contamination and measurement of radioactivity is the:
A. Geiger-Mueller counter
B. Cutie Pie
C. Ionization chamber
D. None of these - Correct Answers -B. Cutie Pie
,The most common histopathology for head neck cancers is:
A. Adenocarcinoma
B. Squamous cell carcinoma
C. Transitional cell carcinoma
D. Clear cell carcinoma - Correct Answers -B. Squamous cell carcinoma
A 42 year old male who has been working in the field for 10 years would have a lifetime
exposure of:
A. 4.2 rem
B. 42 rem
C. .05 rem
D. 5 rem - Correct Answers -B. 42 rem
* 1 rem per year in age is allowed
Which of the following are required on the personnel monitoring report:
1. Birth date
2. Cumulative lifetime exposure
3. Cumulative annual skin dose
A. 1 & 2
B. 1 & 3
C. 2 & 3
D. All choices - Correct Answers -A. 1 & 2
The most common cancer in children is:
A. Retinoblastoma
B. ALL
C. Ewings Sarcoma
D. Medulloblastoma - Correct Answers -B. ALL
The annual dose limit for occupational exposure to the hands is ____ annually. - Correct
Answers -50 rem or 500 mSv
If distance is doubled, the intensity of the radiation will be:
A. Reduced by half
B. Increased by a factor of 2
C. Reduced by a factor of 4
D. Increased by a factor of 4 - Correct Answers -C. Reduced by a factor of 4
, An area where the radiation level could reach 60 mrem/hr would be classified as:
A. Radiation area
B. High radiation area
C. Very high radiation area
D. Dangerous radiation area - Correct Answers -A. Radiation area
Notice should be posted where radiation exposure has potential. An area above 100
mrem/hr must have a sign saying "Caution: High radiation area". Exposure below that
can just read "radiation area."
When a patient is treated with radioactive Iodine 131, the room should have a label that
reads:
A. "High Radiation-Grave Danger"
B. "Caution: Radioactive Materials"
C. "Caution: High Dose Radiation"
D. "Do Not Enter: Radiation at Excessive Levels" - Correct Answers -B. "Caution:
Radioactive Materials"
Where sources of radiation are stored and used, there should always be warning signs
posted saying, "Caution: Radioactive Materials."
When calibrating ion chambers, which of the following correction favors are needed?
A. Barometric pressure
B. Volume of the chamber
C. Temperature
D. Beam energy
E. A & B
F. B & D
G. A, B, and C
D. A, B, C, and D - Correct Answers -G. A, B, and C
For a controlled area, the shielding must be sufficient to reduce exposure to no more
than:
A. 1 mrem/hr
B. 10 mrem/hr
C. 1 mrem/week
D. 100 mrem/week - Correct Answers -D. 100 mrem/week
For sufficient shielding, exposure has to be be reduced to 100 mrem/week (.1
rem/week) for a controlled area.
A stochastic effect is best defined as one in which:
Which of the following types of treatments is normally accomplished using a source to
skin distance of 50 cm or more:
1. Superficial
2. Supervoltage
3. Orthovoltage
4. Megavoltage
A. 1 & 3
B. 2 & 4
C. 1, 2, and 3
D. All choices - Correct Answers -B. 2 & 4
The most common solid tumor in children is:
A. Retinoblastoma
B. ALL
C. Ewings Sarcoma
D. Medulloblastoma - Correct Answers -D. Medulloblastoma
Which of the following methods can be used for calibration?
A. Ionization
B. Photographic
C. Thermoluminescent dosimetry
D. All choices - Correct Answers -D. All choices
All are true regarding the location of the spleen EXCEPT:
A. Between T11-L3
B. Close to the 9th-11th ribs
C. End 5 cm to the midline
D. Lies posteriorly in the left hypochondrium - Correct Answers -A. Between T11-L3
Primary CNS Tumors use the following staging system:
A. Ann Arbor Staging
B. FIGO
,C. French American British staging
D. Grade staging - Correct Answers -D. Grade staging
Malfunction of radiation monitoring devices may occur due to:
1. Power failure
2. Humidity
3. Damage to probe
4. Meter failure
A. 1 only
B. 2 only
C. 1 & 3
D. 1, 3, and 4 only - Correct Answers -D. 1, 3, and 4 only
When calibrating ionization chambers, which of the following correction factors is NOT
needed?
A. Barometric pressure
B. Elevation
C. Temperature
D. Beam energy - Correct Answers -D. Beam energy
The most common metastatic site from head and neck cancer is:
A. Brain
B. Bone
C. Lung
D. Liver - Correct Answers -C. Lung
Which radiation monitoring device is composed of ferrous sulfate, sodium chloride, and
sulfuric acid?
A. TLD
B. OSL
C. Fricke dosimeter
D. Ionization chamber
E. Cutie Pie - Correct Answers -C. Fricke dosimeter
The instrument used for recording higher energy gamma and x-radiation and beta
particles specifically for contamination and measurement of radioactivity is the:
A. Geiger-Mueller counter
B. Cutie Pie
C. Ionization chamber
D. None of these - Correct Answers -B. Cutie Pie
,The most common histopathology for head neck cancers is:
A. Adenocarcinoma
B. Squamous cell carcinoma
C. Transitional cell carcinoma
D. Clear cell carcinoma - Correct Answers -B. Squamous cell carcinoma
A 42 year old male who has been working in the field for 10 years would have a lifetime
exposure of:
A. 4.2 rem
B. 42 rem
C. .05 rem
D. 5 rem - Correct Answers -B. 42 rem
* 1 rem per year in age is allowed
Which of the following are required on the personnel monitoring report:
1. Birth date
2. Cumulative lifetime exposure
3. Cumulative annual skin dose
A. 1 & 2
B. 1 & 3
C. 2 & 3
D. All choices - Correct Answers -A. 1 & 2
The most common cancer in children is:
A. Retinoblastoma
B. ALL
C. Ewings Sarcoma
D. Medulloblastoma - Correct Answers -B. ALL
The annual dose limit for occupational exposure to the hands is ____ annually. - Correct
Answers -50 rem or 500 mSv
If distance is doubled, the intensity of the radiation will be:
A. Reduced by half
B. Increased by a factor of 2
C. Reduced by a factor of 4
D. Increased by a factor of 4 - Correct Answers -C. Reduced by a factor of 4
, An area where the radiation level could reach 60 mrem/hr would be classified as:
A. Radiation area
B. High radiation area
C. Very high radiation area
D. Dangerous radiation area - Correct Answers -A. Radiation area
Notice should be posted where radiation exposure has potential. An area above 100
mrem/hr must have a sign saying "Caution: High radiation area". Exposure below that
can just read "radiation area."
When a patient is treated with radioactive Iodine 131, the room should have a label that
reads:
A. "High Radiation-Grave Danger"
B. "Caution: Radioactive Materials"
C. "Caution: High Dose Radiation"
D. "Do Not Enter: Radiation at Excessive Levels" - Correct Answers -B. "Caution:
Radioactive Materials"
Where sources of radiation are stored and used, there should always be warning signs
posted saying, "Caution: Radioactive Materials."
When calibrating ion chambers, which of the following correction favors are needed?
A. Barometric pressure
B. Volume of the chamber
C. Temperature
D. Beam energy
E. A & B
F. B & D
G. A, B, and C
D. A, B, C, and D - Correct Answers -G. A, B, and C
For a controlled area, the shielding must be sufficient to reduce exposure to no more
than:
A. 1 mrem/hr
B. 10 mrem/hr
C. 1 mrem/week
D. 100 mrem/week - Correct Answers -D. 100 mrem/week
For sufficient shielding, exposure has to be be reduced to 100 mrem/week (.1
rem/week) for a controlled area.
A stochastic effect is best defined as one in which:
