Radiation Monitoring questions

Question 1

How is exposure monitoring accomplished?

Answer 1

Through a personnel dosimetry Radiation survey instruments for area monitoring

Question 2

Why should a personnel dosimeter be worn outside of a protective apron at collar level on the anterior surface of the body during a fluoroscopic procedure?

Answer 2

because the unprotected head, neck, and lenses of the eye receive 10-20 times more exposure than the protected body trunk

Question 3

What must personnel dosimeters be able to detect and record from day to day?

Answer 3

accurately monitoring the working environment

Question 4

Why does a monitoring company supply a control badge with every new batch of badges

Answer 4

serves as a comparison with the other badges

Question 5

What must be done with results from personnel monitoring programs to meet state and federal regulations?

Answer 5

they are kept to keep track of a person’s cumulative dose

Question 6

When changing employment, what responsibility does a radiation worker have for personal data pertinent to accumulated permanent equivalent dose?

Answer 6

you must give your new employer a copy of your occupational dose record, in order to keep an accurate record of your lifetime dose

Question 7

How sensitive to x-radiation and gamma radiation is an OSL dosimeter

Answer 7

provides a new degree of sensitivity by giving an accurate reading as low as 1 mrem for gamma and x-rays and goes up to 1000rem

Question 8

What are some of the requirements that radiation survey instruments must meet if they are to be used for area monitoring

Answer 8

1. portability
2. be durable
3. reliable
4. interact the way human tissue reacts
5. detect all common types of ionizing radiation
6. energy shouldn’t affect the response of the detector or performance (direction of incidence radiation)
7. cost effective
8. calibrated annually

Question 9

How does a GM detector alert the operator to the presence of ionizing radiation

Answer 9

has an audible sound system (audio amplifier and speaker) that alerts the operator to the presence of ionizing radiation

Question 10

What type of diagnostic x-ray equipment would ionization chambers be used to calibrate

Answer 10

they can be used to measure the radiation output from both radiographic and fluoroscopic x-ray equipment

Question 11

When laser light is incident on the sensing material in an OSL dosimeter, the material:
A. Becomes luminescent in proportion to the amount of radiation exposure received
b. Fluoresces in proportion to the amount of radiation exposure received and then emits beta particles
c. Phosphoresces in proportion to the amount of radiation exposure received and then darkens
D. Turns ice blue and fluoresces in proportion to the amount of radiation exposure received

Answer 11

A. becomes luminescent in proportion to the amount of radiation exposure received

Question 12

Which of the following chemicals functions as the sensing material in a thermoluminescent dosimeter
A. Barium sulfate
B. Calcium tungstate
C. lithium fluoride
D. Sodium iodide

Answer 12

C. Lithium Fluoride

Question 13

During routine radiographic procedures, when a protective apron is not being worn, the primary personnel dosimeter should be attached to the clothing on the front of the body at
A. Collar level to apps. the maximum radiation dose to the thyroid and the head and neck
B. Chest level to apps. the maximum radiation dose to the heart and lungs
C. Hip level to apps. the maximum radiation dose to the reproductive organs
D. Waist level to apps. the maximum radiation dose to the small intestine

Answer 13

A. Collar level to apps. the maximum radiation dose to the thyroid and the head and neck

Question 14

Which of the following requirements should radiation survey instruments fulfill?
1. Instruments must be reliable by accurately recording exposure or exposure rate.
2. Instruments must be durable enough to w/stand normal use
3. Instruments should interact with ionizing radiation in a manner similar to the ay in which human tissue interacts
A. 1 only
B. 2 only
C. 3 only
D. 1, 2, & 3

Answer 14

D. 1, 2, & 3

Question 15

During diagnostic imaging procedures, how should the radiation dose to the abdomen of a pregnant radiographer be monitored during gestation
A. It should be estimated from the radiation dose recorded by the primary monitor worn at collar level
B. It should be obtained from the primary radiation monitor worn at abdominal level
C. It should be obtained from a second radiation monitor worn at abdominal level
D. It is not necessary to monitor the radiation dose to the embryo-fetus that results from occupational exposure of a pregnant radiographer during gestation

Answer 15

C. It should be obtained from a second radiation monitor worn at abdominal leve

Question 16

When a radiologic procedure requires the hands of a radiation worker to be near the primary beam, the equivalent dose to the hands of that individual may be determined through the use of
A. The primary personnel monitor worn at collar level
B. A pocket ionization chamber attached to the wristwatch of the radiation worker
C. A TLD ring badge worn on the hand of the radiation worker
D. A cutie pie

Answer 16

C. A TLD ring badge worn on the hand of the radiation worker

Question 17

Which of the following instruments is used to calibrate radiographic and fluoroscopic x-ray equipment
A. Proportional counter
B. GM detector
C. Ionization chamber with electrometer
D. Pocket ionization chamber

Answer 17

C. Ionization chamber with electrometer

Question 18

For x-ray and gamma ray photons with energies from 5 keV to in excess of 40 MeV, the _ gives an accurate reading as low as 1 mrem
A. Film badge
B. OSI dosimeter
C. Pocket ionization chamber
D. TLD

Answer 18

B. OSI dosimeter

Question 19

Which of the following instruments should be used to locate a lost radioactive source or detect low-level radioactive contamination
A. GM detector
B. Proportional counter
C. IOnization chamber-type survey meter (cutie pie)
D. TLD analyzer

Answer 19

A. GM detector

Question 20

Which of the following instruments should be used in an x-ray installation to assess fluoroscopic scatter radiation exposure rate
A. GM detector
B. Ionization chamber with electrometer
C. Proportional counter
D. TLD

Answer 20

B. Ionization chamber with electrometer