Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

RAD456: Reg. Review

ARRT Registry Review: Radiation Protection

QuestionAnswer
What percentage of public exposure to ionizing radiation is from medical sources? 50% Lange Q&A pg. 125
What cell type has the greatest radiosensitivity in the adult human body? Lymphocytes Lange Q&A pg. 125
The unit used to express kinetic energy released in matter? Kerma Lange Q&A pg. 126
What is the established annual occupational dose-equivalent limit for the lens of the eye? 150 mSv Lange Q&A pg. 126
Occupational radiation monitoring is required when it is possible that the individual might receive more than how much radiation? 1/10 of the annual dose limit Lange Q&A pg. 126
Irradiation of water molecules within the body and their resulting breakdown is termed? Radiolysis Lange Q&A pg. 126
The x-ray interaction with matter that is responsible for the majority of scattered radiation reaching the image receptor is what type? Compton scatter Lange Q&A pg. 127
Each time an x-ray beam scatters, its intensity at 1 m from the scattering object is what fraction of its original intensity? 1/1,000 Lange Q&A pg. 127
The most radiosensitive portion of the GI tract is what? Small bowel Lange Q&A pg. 129
The annual dose limit for occupationally exposed individuals is valid for what types of radiation? Beta, x-rays, and gamma radiations Lange Q&A pg. 129
What unit of measure is used to express ionizing radiation dose to biologic material? Rem (Sv) Lange Q&A pg. 130
What is the term used to describe x-ray photon interaction with matter and the transference of part of the photon's energy to matter? Scattering Lange Q&A pg. 129
The reduction in the intensity of an x-ray beam as it passes through material is termed? Attenuation Lange Q&A pg. 130
What type of dose-response relationship represents radiation-induced leukemia and genetic effects? Linear, nonthreshold Lange Q&A pg. 131
A dose of 25 rad to the fetus during the seventh or eighth week of pregnancy is likely to cause what? Neurologic anomalies Lange Q&A pg. 131
Late effects of radiation, whose incidence is dose related and for which there is no threshold dose, are referred to as? Stochastic/probabilistic Lange Q&A pg. 131
According to NCRP regulations, leakage radiation from the x-ray tube must not exceed what? 100 mR/h Lange Q&A pg. 131
According to the NCRP, the annual occupational dose-equivalent limit (50 rem) to the thyroid, skin, and extremities is equal to how many mSv? 500 Lange Q&A pg. 132
The amount of time that x-rays are being produced and directed toward a particular wall is referred to as the what? Use factor Lange Q&A pg. 133
The SSD in mobile fluoroscopy must be at least how far? A minimum of 12 inches Lange Q&A pg. 135
The automatic exposure device that is located immediately under the x-ray table is the? Ionization chamber Lange Q&A pg. 135
What is the effect on RBE as LET increases? As LET increases, RBE increases. Lange Q&A pg. 135
An optically stimulated luminescence dosimeter contains what type of detector? Aluminum oxide Lange Q&A pg. 136
The photoelectric effect is an interaction between an x-ray photon and what? Inner shell electron Lange Q&A pg. 136
Filters used in radiographic x-ray tubes generally are composed of what? Aluminum Lange Q&A pg. 136
Primary radiation barriers must be at least how high? 7 feet Lange Q&A pg. 137
Created by: jlemmons1