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


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. 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
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: Eq. Oper.

ARRT registry review covering equipment operation and quality control

QuestionAnswer
Which type of radiation comprises 70-90% of the x-ray beam? Bremsstrahlung: pg. 431
What principal factor affects the quality of the beam? kV: pg. 434
The gradual decrease in exposure rate as radiation passes through tissue is called what? Attenuation: pg. 434
During this type of interaction, a low energy x-ray photon gives up all its energy to eject an inner shell electron and also produces a characteristic ray. Photoelectric effect: pg. 436
What are two types of radiation that are produced at the anode through energy conversion processes? Bremsstrahlung & Characteristic: pg. 431
What term refers to the distance between two consecutive wave crests? Wavelength: pg. 432
What principal factor affects the quantity of the beam? mAs: pg. 434
This type of interaction contributes significantly to patient dose. Photoelectric effect: pg. 434
This type of interaction has a high energy x-ray photon that ejects an outer shell electron, contributes to image fog, and poses a radiation hazard to work personnel. Compton scatter: pg. 434
What kind of interaction occurs between x-rays and matter with a very low energy x-ray photon that interacts with the atom, disappears, excites the atom, returns to normal state, and emits an identical photon. Coherent scatter: pg. 436
Frequency is measured in what? Hertz (Hz): pg. 432
When there is varying amplitude and periodic reversal of polarity this is known as what? Alternating current (AC): pg. 437
Step-up transformers increase voltage and____ amperage. Decrease: pg. 441
What are solid-state diodes, made of semi conductive materials that permit the flow of electricity in only one direction? Rectifiers: pg. 442
What type of transformer requires AC for operation and operates on the principle of self induction? Autotransformer: pg. 441
What two materials is the anode disk made of? Molybdenum & graphite: pg.445
What two materials make up the focal track of the anode? Tungsten & rhenium alloy: pg. 445
What percent of the kinetic energy of the electron stream is actually converted into x-rays? 0.2%: pg. 447
What are some common causes of tube failure? Vaporized tungsten, pitted anode, cracked anode, gassy tube: pg. 449
When the effective focal spot is always smaller than the actual focal spot this is known as what? Line focus principle: pg. 448
When determining heat units using 3 phase 6 pulse equipment, which factor is used? 1.35: pg. 451
What are the 3 portions of the x-ray circuit? Low voltage(primary) circuit, high voltage(secondary) circuit, and filament circuit: pg. 451
When determining heat units using 3 phase 12 pulse equipment which factor is used? 1.41: pg. 451
T/F The exposure switch and the mA meter are both components of the primary circuit? False, the exposure switch is correct, but the mA meter is located on the secondary circuit. The kV selector is a component of the primary side: pg. 451-455
The depth of the block is the number of bits required to describe the gray level that each pixel an take on is known as what? Bit depth: pg. 458
What are the two types of computer memory? RAM & ROM: pg. 466
There are how many generations of CT scanners? 7: pg. 474
T/F The rectifiers and the x-ray tube are a part of the secondary circuit? True: pg. 455
Created by: Almehringer
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