|ACTUAL QUESTIONS AND VERIFIED
Question 1
Prophylactic cranial irradiation for ALL is administered to a total dose of:
A. 1200 cGy
B. 1800 cGy
C. 3000 cGy
D. 4500 cGy
E. 6000 cGy
CORRECT ANSWER
B. 1800 cGy
Question 2
The treatment time for a field requiring 350 monitor units while the linear acellerator dose
rate is 220 units/minute is:
A. .394 minutes
B. .629 minutes
C. 1.59 minutes
D. 2.52 minutes
CORRECT ANSWER
C. 1.59 minutes
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,Question 3
Placing marks on the central axis only is:
A. Sufficient for daily realignment and targeting
B. Sufficient when target margins are small
C. Adequate for treating small fields
D. Insufficient for daily realignment and targeting
CORRECT ANSWER
D. Insufficient for daily realignment and targeting
*Marks should be placed on the central axis and along coordinate planes to assure the
patient and location target is accurately reproduced.
Question 4
During total CNS irradiation, the patient is:
A. Supine with an extended chin
B. Supine with chin flexed
C. Prone with chin slightly extended
D. Prone with chin flexed
CORRECT ANSWER
C. Prone with chin slightly extended
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,Question 5
Electron contamination from high energy photon beams may result from photon
interactions with the:
A. Room air
B. Collimators
C. Bolus
D. Lucite trays
CORRECT ANSWER
B. Collimators
Question 6
Lucite is often used as the material for positioning devices. One major concern when this
material is in the path of the treatment beam is:
A. Electron contamination
B. Beam attenuation
C. Decreased rigidity
D. Acquired radioactivity
CORRECT ANSWER
B. Beam attenuation
Question 7
Advantages of networked digital image management do not include:
A. Dispersed access to images
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, B. Multiple users can share images
C. Physical storage space is minimized
D. Computer disk space is not an issue
CORRECT ANSWER
D. Computer disk space is not an issue
Question 8
In the treatment of seminoma, an external testicular shield should be used for the
remaining testicle. This is Important since the TD 5/5 for the testis is as low as:
A. 1 Gy
B. 10 Gy
C. 20 Gy
D. 40 Gy
CORRECT ANSWER
A. 1 Gy
Question 9
Which of the following cannot produce a 3 dimensional image?
A. MRI
B. CT
C. Ultrasound
D. Electronic portal imaging
CORRECT ANSWER
D. Electronic portal imaging
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Question 1
Prophylactic cranial irradiation for ALL is administered to a total dose of:
A. 1200 cGy
B. 1800 cGy
C. 3000 cGy
D. 4500 cGy
E. 6000 cGy
CORRECT ANSWER
B. 1800 cGy
Question 2
The treatment time for a field requiring 350 monitor units while the linear acellerator dose
rate is 220 units/minute is:
A. .394 minutes
B. .629 minutes
C. 1.59 minutes
D. 2.52 minutes
CORRECT ANSWER
C. 1.59 minutes
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@THE STUDY VAULT
,Question 3
Placing marks on the central axis only is:
A. Sufficient for daily realignment and targeting
B. Sufficient when target margins are small
C. Adequate for treating small fields
D. Insufficient for daily realignment and targeting
CORRECT ANSWER
D. Insufficient for daily realignment and targeting
*Marks should be placed on the central axis and along coordinate planes to assure the
patient and location target is accurately reproduced.
Question 4
During total CNS irradiation, the patient is:
A. Supine with an extended chin
B. Supine with chin flexed
C. Prone with chin slightly extended
D. Prone with chin flexed
CORRECT ANSWER
C. Prone with chin slightly extended
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,Question 5
Electron contamination from high energy photon beams may result from photon
interactions with the:
A. Room air
B. Collimators
C. Bolus
D. Lucite trays
CORRECT ANSWER
B. Collimators
Question 6
Lucite is often used as the material for positioning devices. One major concern when this
material is in the path of the treatment beam is:
A. Electron contamination
B. Beam attenuation
C. Decreased rigidity
D. Acquired radioactivity
CORRECT ANSWER
B. Beam attenuation
Question 7
Advantages of networked digital image management do not include:
A. Dispersed access to images
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, B. Multiple users can share images
C. Physical storage space is minimized
D. Computer disk space is not an issue
CORRECT ANSWER
D. Computer disk space is not an issue
Question 8
In the treatment of seminoma, an external testicular shield should be used for the
remaining testicle. This is Important since the TD 5/5 for the testis is as low as:
A. 1 Gy
B. 10 Gy
C. 20 Gy
D. 40 Gy
CORRECT ANSWER
A. 1 Gy
Question 9
Which of the following cannot produce a 3 dimensional image?
A. MRI
B. CT
C. Ultrasound
D. Electronic portal imaging
CORRECT ANSWER
D. Electronic portal imaging
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