Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password

Your email address is only used to allow you to reset your password. See 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.

Question

As the energy of the beam increases, what happens to wavelength and frequency?
click to flip
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know

Question

Is the energy of the beam homogenous or heterogenous?
Remaining cards (24)
Know
0:00
edit
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

RADT 456

ARRT Registry Review Covering Radiation Protection

QuestionAnswer
As the energy of the beam increases, what happens to wavelength and frequency? Wavelength decreases and frequency increases. Pg. 225.
Is the energy of the beam homogenous or heterogenous? Heterogeneous (polyenergetic). Pg. 227.
In the primary beam, is there more bremsstrahlung or characteristic radiation? Brems radiation comprises 70-90% of the x-ray beam. Pg. 227.
In characteristic radiation, what shell is left vacant? K shells are left vacant until an e- from a higher energy level moves into it. Pg. 228.
What type of interaction between x-ray photons and matter contributes to patient dose? Photoelectric effect. Pg. 228.
What type of interaction between x-ray photons and matter contributes to occupational dose? Compton scatter. Pg. 228.
How fast do x-rays travel? All electromagnetic radiation travels at 186,000 miles/s. Pg. 229.
Are LET and RBE directly/indirectly related? They are directly related. Pg. 233.
Are diagnostic x-rays considered high or low LET? Low LET. Pg. 233.
If a woman is possibly pregnant, when is the safest time to schedule x-rays? The first 10 days following the onset of menses. Pg. 237.
What is the most radiosensitive cell? Lymphocyte. Pg. 240.
What is the overall most efficient beam-restricing device? Collimator. Pg. 248.
Inherent filtration accounts for how many mm Al equivalent? 0.5 mm Al. Pg. 251.
Equipment operating between 50 and 70 kv must have how much Al equivalent? 1.5 mm Al equivalent. Pg. 252.
When should a technologist use gonadal shielding? When the gonads are within 5 cm of a collimated field. Pg. 253.
As film speed increases, what happens to the patient dose? As film speed increases, patient dose decreases. Pg. 258.
What is reproducibility? Consistency in exposure output during repeated exposures at a particular setting. Pg. 259.
The SSD must be how many inches away for mobile fluoroscopic equipment? 12 inches. Pg. 261.
What is the principle function of x-ray beam filtration? Reduce patient skin dose. Pg. 263.
What is the approximate intensity of scattered radiation from the patient? 1m from the patient is 0.1% of the primary beam. Pg. 268.
Leakage radiation from the x-ray tube must not exceed what? 100 mR/h at 1m from the tube. Pg. 268.
Protective lead aprons must be at least what Pb equivalent? 0.25mm Pb equivalent. Pg. 269.
1Gy equals how many rads? 100rads. Pg. 279.
1Sv equals how many rem's? 100rems. Pg. 279.
What is the occupational dose limit for exposed individuals per year? 5rem or 50mSv/y/ Pg. 286.
Created by: burton08L
Popular Radiology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards