LRA 216 Final
Dose limits are based on a _____ dose-response relationship to radiation. - Answer-linear, nonthreshold
The NCRP publishes annual dose limits for____exposure - Answer-All of the above
If a technologist is receiving 2 mGyt/hr standing 1 foot from the patient during fluoroscopy, what is his
rate of exposure when he steps back to a distance of 2 feet from the patient? - Answer-0.50 mGyt/hr
The first radiation health physicists worked with____ - Answer-The atomic bomb
When using the inverse square law during fluoroscopy, the patient should be considered a(n) _____
source of radiation. - Answer-point
Exposure is measured by multiplying _____ by _____. - Answer-exposure rate, exposure time
The dose limits for the general public is____the dose limits for occupational exposure - Answer-1/10
What is the best approach to occupational radiation exposure? - Answer-follow the concept of ALARA
The dose limits established by the NCRP are derived from - Answer-BEIR and NSC reports
The three cardinal principals of radiation protection involve____ - Answer-Time
Distance
Shielding
, The concept of effective dose accounts for the___ - Answer-Different types of radiation and RBE
Relative radiosensitivity of various tissues and organs
What is the NCRP - Answer-National Council of Radiation Protection
Health physics is concerned with minimizing radiation dose to _____. - Answer-Radiation physicists
Radiation workers
The public
A tenth-value layer is equal to____half-vale layer - Answer-3.3
If the HVL in a radiology department is 0.25 mm Pb, then how thick should a shield be to reduce the
technologists' exposure to one fourth the incident scatter? - Answer-0.5 mm Pb
The NCRP makes___ regarding dose limits - Answer-recommendations
The design of an uncontrolled area in radiology is based on the NCRP recommended limit of___mSv/yr
for the public - Answer-1
What is the minimum requirement for filtration on x-ray equipment operating above 70 kVp - Answer-
2.5 mm Al equivalent
The x-ray control panel must show____ - Answer-Beam on time
The advantages of using thermoluminescent dosimeters is/are____ - Answer-small size
Tissue Equivalent response
Dose limits are based on a _____ dose-response relationship to radiation. - Answer-linear, nonthreshold
The NCRP publishes annual dose limits for____exposure - Answer-All of the above
If a technologist is receiving 2 mGyt/hr standing 1 foot from the patient during fluoroscopy, what is his
rate of exposure when he steps back to a distance of 2 feet from the patient? - Answer-0.50 mGyt/hr
The first radiation health physicists worked with____ - Answer-The atomic bomb
When using the inverse square law during fluoroscopy, the patient should be considered a(n) _____
source of radiation. - Answer-point
Exposure is measured by multiplying _____ by _____. - Answer-exposure rate, exposure time
The dose limits for the general public is____the dose limits for occupational exposure - Answer-1/10
What is the best approach to occupational radiation exposure? - Answer-follow the concept of ALARA
The dose limits established by the NCRP are derived from - Answer-BEIR and NSC reports
The three cardinal principals of radiation protection involve____ - Answer-Time
Distance
Shielding
, The concept of effective dose accounts for the___ - Answer-Different types of radiation and RBE
Relative radiosensitivity of various tissues and organs
What is the NCRP - Answer-National Council of Radiation Protection
Health physics is concerned with minimizing radiation dose to _____. - Answer-Radiation physicists
Radiation workers
The public
A tenth-value layer is equal to____half-vale layer - Answer-3.3
If the HVL in a radiology department is 0.25 mm Pb, then how thick should a shield be to reduce the
technologists' exposure to one fourth the incident scatter? - Answer-0.5 mm Pb
The NCRP makes___ regarding dose limits - Answer-recommendations
The design of an uncontrolled area in radiology is based on the NCRP recommended limit of___mSv/yr
for the public - Answer-1
What is the minimum requirement for filtration on x-ray equipment operating above 70 kVp - Answer-
2.5 mm Al equivalent
The x-ray control panel must show____ - Answer-Beam on time
The advantages of using thermoluminescent dosimeters is/are____ - Answer-small size
Tissue Equivalent response
