Radiation Therapy Board Exam Review –
MOSBY 2025/2026 Exam Questions with
100% Correct Answers | Latest Update
Orthovoltage machines operated in the range of
A. 10-40 KV
B. 100 KV
C. 100-200 KV
D. 150-500 KV - 🧠 ANSWER ✔✔D. 150-500 KV
0.01 J/Kg is equivalent to:
A. 1 Roengtgen
B. 1 RAD
C. 1 Gy
D. 1 Bq - 🧠 ANSWER ✔✔B. 1 RAD
A pocket dosimeter is a
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,A. low energy dosimeter
B. thermoluminescent dosimeter
C. cutie pie
D. none of the above - 🧠 ANSWER ✔✔A. low energy dosimeter
Traditional unit of absorbed dose equivalent.
A. REM
B. RAD
C. Roentgen
D. RBE - 🧠 ANSWER ✔✔A. REM
Unit of exposure in air is:
A. Roetgen
B. Planck
C. Curie
D. REM - 🧠 ANSWER ✔✔A. Roentgen
Annual dose lime for occupational exposure.
A. 5 REM
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,B. 15 REM
C. 30 REM
D. 50 REM - 🧠 ANSWER ✔✔D. 50 REM.
500 mSv --> 50 REM
Annual dose limit for the general public is:
A. 0.1 REM
B. 0.5 REM
C. 1 REM
D. 5 REM - 🧠 ANSWER ✔✔A. 0.1 REM
0.1 REM --> 1 mSv
When a patient is treated with Iodine 131 the room should be labeled as:
A. High radiation- grave danger
B. Caution: radioactive materials
C. Caution: high Dose radiation
D. Do not enter: radiation at excessive levels - 🧠 ANSWER ✔✔B. caution:
radioactive materials
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, When calibrating ion chambers, which are needed?
1. Barometric pressure
2. volume of chamber
3. temperature
4.beam energy - 🧠 ANSWER ✔✔1, 2, 3 but NOT beam energy
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 - 🧠 ANSWER ✔✔D. 100 mREM/week
0.1 REM/week --> 100 mREM/Week
Light field and radiation field congruence should be checked:
A. daily
B. monthly
C. weekly
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MOSBY 2025/2026 Exam Questions with
100% Correct Answers | Latest Update
Orthovoltage machines operated in the range of
A. 10-40 KV
B. 100 KV
C. 100-200 KV
D. 150-500 KV - 🧠 ANSWER ✔✔D. 150-500 KV
0.01 J/Kg is equivalent to:
A. 1 Roengtgen
B. 1 RAD
C. 1 Gy
D. 1 Bq - 🧠 ANSWER ✔✔B. 1 RAD
A pocket dosimeter is a
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
1
,A. low energy dosimeter
B. thermoluminescent dosimeter
C. cutie pie
D. none of the above - 🧠 ANSWER ✔✔A. low energy dosimeter
Traditional unit of absorbed dose equivalent.
A. REM
B. RAD
C. Roentgen
D. RBE - 🧠 ANSWER ✔✔A. REM
Unit of exposure in air is:
A. Roetgen
B. Planck
C. Curie
D. REM - 🧠 ANSWER ✔✔A. Roentgen
Annual dose lime for occupational exposure.
A. 5 REM
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STATEMENT. ALL RIGHTS RESERVED
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,B. 15 REM
C. 30 REM
D. 50 REM - 🧠 ANSWER ✔✔D. 50 REM.
500 mSv --> 50 REM
Annual dose limit for the general public is:
A. 0.1 REM
B. 0.5 REM
C. 1 REM
D. 5 REM - 🧠 ANSWER ✔✔A. 0.1 REM
0.1 REM --> 1 mSv
When a patient is treated with Iodine 131 the room should be labeled as:
A. High radiation- grave danger
B. Caution: radioactive materials
C. Caution: high Dose radiation
D. Do not enter: radiation at excessive levels - 🧠 ANSWER ✔✔B. caution:
radioactive materials
COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
3
, When calibrating ion chambers, which are needed?
1. Barometric pressure
2. volume of chamber
3. temperature
4.beam energy - 🧠 ANSWER ✔✔1, 2, 3 but NOT beam energy
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 - 🧠 ANSWER ✔✔D. 100 mREM/week
0.1 REM/week --> 100 mREM/Week
Light field and radiation field congruence should be checked:
A. daily
B. monthly
C. weekly
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STATEMENT. ALL RIGHTS RESERVED
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