Below are a few examples of my questions and answers for our week two quiz covering radiation protection of personnel. The correct answer is underlined and questions on which I answered wrong I include an explanation below.
1) Which type of dosimeter relies on laser light to release absorbed energy to give a reading of absorbed dose?
A) LiF TLD
B) CaFl (manganese activated) TLD
C) Aluminum oxide optically stimulated luminescent dosimeter
D) film dosimeter
2) Which of the following types of personnel dosimetry has an atomic number most similar to soft tissue?
A) Lithium fluoride TLD
B) Film dosimeter
C) Aluminum oxide OSL dosimeter
D) pocket dosimeter
3) According to recommended dose limits, a radiation therapist who is 32 years old and has worked in radiation therapy since age 23 is allowed a cummulative exposure of:
A) 9 Rem
B) 320 mSv
C) 23 Rem
D) 450 mSv
Which of the following types of personnel monitoring devices is able to differential the dose delivered by energy or type?
A) film
B) Lithium fluoride TLD
C) Manganese Activated calcium flouride TLD
D) Pocket ionization chamber
-For this problem I chose C) I misunderstood the question thinking it wanted to know which type of personnel monitor could differentiate between radiation types. I knew both Lithium Fluoride and Manganese Activated Calcium Fluoride TLD could differentiate between radiation types. Pocket ionization chambers on the other hand must be calibrated or set to radiation type ahead of use and film cannot differentiate radiation type. I should have reread the question to better understand what it was asking and been alerted by what I saw as two possible correct answers.
1) Which type of dosimeter relies on laser light to release absorbed energy to give a reading of absorbed dose?
A) LiF TLD
B) CaFl (manganese activated) TLD
C) Aluminum oxide optically stimulated luminescent dosimeter
D) film dosimeter
2) Which of the following types of personnel dosimetry has an atomic number most similar to soft tissue?
A) Lithium fluoride TLD
B) Film dosimeter
C) Aluminum oxide OSL dosimeter
D) pocket dosimeter
3) According to recommended dose limits, a radiation therapist who is 32 years old and has worked in radiation therapy since age 23 is allowed a cummulative exposure of:
A) 9 Rem
B) 320 mSv
C) 23 Rem
D) 450 mSv
Which of the following types of personnel monitoring devices is able to differential the dose delivered by energy or type?
A) film
B) Lithium fluoride TLD
C) Manganese Activated calcium flouride TLD
D) Pocket ionization chamber
-For this problem I chose C) I misunderstood the question thinking it wanted to know which type of personnel monitor could differentiate between radiation types. I knew both Lithium Fluoride and Manganese Activated Calcium Fluoride TLD could differentiate between radiation types. Pocket ionization chambers on the other hand must be calibrated or set to radiation type ahead of use and film cannot differentiate radiation type. I should have reread the question to better understand what it was asking and been alerted by what I saw as two possible correct answers.