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WorksheetsRAD 205 Ch. 13 Review
Total questions: 52
Worksheet time: 52mins
What is the purpose of personnel radiation monitoring?
Reduce patient dose
Detect contamination
Ensure occupational exposure remains within limits
Check equipment calibration
When must personnel monitoring be provided?
When workers are likely to receive 10% of the annual dose limit
Only for radiologists
Only in nuclear medicine
At the request of the employee
Which dosimeter is most sensitive to low doses?
Film badge
Pocket ionization chamber
Thermoluminescent dosimeter (TLD)
Optically stimulated luminescence (OSL)
What is the annual occupational effective dose limit for radiation workers?
50 mSv (millisieverts) per year.
10 mSv (millisieverts) per year.
100 mSv (millisieverts) per year.
5 mSv (millisieverts) per year.
Which dosimeter uses aluminum oxide crystals?
Film badge
OSL
TLD
Pocket dosimeter
TLDs use what type of material to store radiation energy?
Lithium fluoride
Sodium iodide
Aluminum oxide
Cesium iodide
Which dosimeter provides immediate readings?
Film badge
OSL
Direct Ion Storage
TLD
Which of the following is NOT a feature of an OSL dosimeter?
Long-term stability
Reusability
Can be reanalyzed
Immediate readings
True or False: TLDs are more sensitive to moisture than film badges.
True
False
Where should a dosimeter be worn if no lead apron is used?
At the waist
At the collar
On the foot
On the back
When wearing a lead apron, the dosimeter should be placed:
Under the apron at the waist
Over the apron at collar level
On the leg
On the chest under the apron
Dosimeters measure the amount of radiation that is scattered only.
True
False
A second dosimeter worn under a lead apron is used to:
Detect background radiation
Measure extremity dose
Estimate fetal dose
Monitor hand exposure
Ring dosimeters are used to monitor exposure to the:
Feet
Eyes
Extremities
Chest
Which dosimeter is most affected by heat and humidity?
Film badge
TLD
OSL
Pocket dosimeter
Which dosimeter is commonly used in nuclear medicine?
TLD
OSL
Film badge
Pocket dosimeter
What is the maximum wear period for film badge dosimeters?
1 week
1 month
3 months
6 months
19. The dosimeter that offers the longest wear period and most detailed dose history is:
Film badge
Thermoluminescent dosimeter (TLD)
Optically stimulated luminescence dosimeter (OSL)
Pocket dosimeter
Pocket dosimeters can be zeroed manually.
True
False
A Geiger-Müller detector is most useful for detecting:
X-rays
Alpha particles
Gamma contamination
High-dose fluoroscopy
Which device is best for monitoring radiation levels in an area?
Pocket dosimeter
TLD
OSL
Ionization survey meter
Survey meters measure accumulated radiation over time.
True
False
Which instrument has an audible sound to indicate radiation presence?
Film badge
GM counter
OSL
Pocket dosimeter
Which type of dosimeter is best suited for measuring short-term, high-dose exposures?
OSL
TLD
Pocket dosimeter
Film badge
Which personnel monitoring device can be reanalyzed multiple times for dose verification?
OSL dosimeter
TLD
Film badge
Pocket dosimeter
What is the primary disadvantage of using a film badge dosimeter?
Cannot be reused
Not affected by environmental conditions
Immediate readings available
Insensitive to low doses
Which dosimeter is most likely to provide an inaccurate reading if exposed to light before processing?
TLD
Pocket dosimeter
OSL dosimeter
Film badge
Which type of dosimeter is best suited for measuring cumulative radiation dose over several months?
Pocket dosimeter
Film badge
OSL dosimeter
Ionization survey meter
Radiation exposure reports must be available to workers.
True
False
Who provides the dosimeter reports?
Radiation Safety Officer
NRC
Dosimetry service provider
Radiologist
Occupational dose limits are regulated by:
ARRT
FDA
NRC
AMA
Which record must be maintained throughout a radiation worker’s career?
Film badge wear record
Training records
Equipment maintenance
Exposure monitoring record
The ALARA principle applies to
Patients only
Workers and patients
Radiologists only
Pregnant women only
A pregnant worker’s fetal dose should not exceed:
0.5 mSv/month
1 mSv/month
5 mSv/year
50 mSv/year
A technologist receives 3 mSv/month. What is the projected annual dose?
12 mSv
24 mSv
36 mSv
50 mSv
What should be done if a dosimeter is accidentally left in a radiation area?
Ignore it
Report to RSO
Throw it away
Wear it next day
All personal dosimeter readings are cumulative.
True
False
Match: OSL →
Heat stimulates light emission
Uses lithium fluoride
Uses aluminum oxide
Match: TLD →
Uses aluminum oxide
Heat releases stored energy
Immediate reading
Match: Pocket ionization chamber / DIS dosimeter→
Audible signal
Instant reading
Long-term dose tracking
Match: GM counter →
Uses lithium fluoride
Worn under apron
Audible indicator
What is the minimum detectable dose for an OSL dosimeter?
10 mSv
0.01 mSv
0.001 mSv
1 mSv
Which dosimeter is not suitable for permanent legal recordkeeping?
TLD
OSL
Film Badge
Pocket ionization chamber / DIS Dosimeter
The most accurate dosimeter currently available is:
Pocket dosimeter
OSL
Film badge
TLD
Dosimeters should be stored in a radiation-free area.
True
False
Which survey device is commonly called a “cutie pie”?
GM counter
Ionization chamber survey meter
Pocket dosimeter
OSL meter
One dosimeter is sufficient to monitor fetal dose.
True
False
Who is responsible for reviewing radiation monitoring reports?
Technologist
Radiologist
Radiation Safety Officer
Hospital administrator
Which dosimeter can be read multiple times without damage?
Film badge
TLD
OSL
Pocket /DIS dosimeter
Monitoring helps enforce dose limits and ensures ALARA compliance
True
False
Which of the following is NOT a purpose of personnel dosimetry?
Monitoring cumulative radiation dose
Ensuring compliance with dose limits
Measuring patient exposure during procedures
Detecting accidental overexposure
When do facilities usually monitor employees?
When likely to receive 1% of annual dose
When likely to receive 5% of annual dose
When likely to receive 10% of annual dose
When likely to receive 15% of annual dose
