Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
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
Normal Size Small Size show me how
Image Production
| Question | Answer |
|---|---|
| does beam restriction have an impact on receptor exposure? | yes ch. 12 pg. 332 |
| osteoporosis, osteomalacia, pneumoperitoneum, emphysema, degenerative arthritis are what type of pathologies | destructive ch. 12 pg. 331 |
| ascites, RA, pagets, pneumonia, atelectasis, CHF are what type of pathologies | additive ch. 12 pg. 331 |
| do compensating filters have impact on receptor exposure? | yes ch. 12 pg. 330 |
| what type of compensating filters are there? | wedge shaped and trough ch. 12 pg. 330 |
| what types of grid cut-off is there? | off-center, off-focus, off-level ch. 12 pg. 324 |
| do grids have an effect on receptor exposure? | yes ch. 12 pg. 321 |
| what are the visibility factors? | brightness and grayscale/contrast ch. 12 pg. 314 |
| what are the geometric factors? | spatial resolution and distortion ch. 12 pg. 314 |
| does mAs have any impact on contrast? | no ch. 12 pg. 315 |
| does SID have an impact on contrast? | no ch. 12 pg. 315 |
| what are the types of AECs | phototimer and ionization chamber ch. 12 pg. 337 |
| as SNR decreases, what happens to the noise | noise increases ch. 12 pg. 337 |
| what is the purpose of a backup timer? | to terminate the exposure in case of an AEC malfunction ch. 12 pg. 341 |
| what is spatial resolution? | describes the IR's impact on image detail |
| spatial resolution is better with ____pixel pitch, ____ pixel size, and ____image matrix. | smaller pixel pitch smaller pixel size larger image matrix ch. 12 pg. 349 |
| "____ is percentage if incoming x-ray photons that are detected and absorbed by the detector for transformation to the x-ray image." | DQE- detective quantum efficiency ch. 12 pg. 349 |
| what are the type of distortion? | shape and size ch. 12 pg. 350 |
| what factors affect size distortion? | OID and SID ch. 12 pg. 351 |
| SID is ____ related to magnification | inversely ch. 12 pg. 355 |
| OID is ____ related to magnification | directly ch. 12 pg. 355 |
| T/F "structures farther from the IR will be more distorted than those closer to the IR." | true ch. 12 pg. 354 |
| the smaller the focal spot size, what happens to blur and spatial resolution? | less blur and better spatial resolution ch. 12 pg. 356 |
| what are the spatial resolution factors | OID, SID, SOD, focal spot size, motion, distortion, and structural position and shape ch. 12 pg. 359 |
| what is the PSP composed of | europium-doped barium fluorohalide ch. 13 pg. 368 |
| what layer is under the barium fluorohalide layer | reflective layer ch. 13 pg. 368 |
| after how many hours will the latent image start fading on CR | after 8 hours ch. 13 pg. 370 |
| "in image processing, x-ray photons are converted to _____ _____, which then are available for processing and postprocessing." | they are converted to electrical signals ch. 13 pg. 375 |
| in a narrow histogram what type of contrast is there | very gray- low contrast ch. 13 pg. 376 |
| in a wide histogram what type of contrast is there | black and whites -high contrast ch. 13 pg. 376 |
| what allows you to change the brightness after the image has already been taken | windowing ch. 13 pg. 378 |
| do direct or indirect capture use scintillators | indirect ch. 13 pg. 383 |
| what does direct capture systems use | amorphous selenium ch. 13 pg. 383 |
| what radiation loses energy and it is given up in the form of an x-ray photon | bremsstrahlung ch. 13 pg. 388 |
| what radiation has a K shell electron ejected leaving a vacancy and an L shell takes its place. During this filling it emits x-ray | characteristic ch. 13 pg. 388 |
| ___ refers to the distance between two consecutive wave crests | wavelength ch. 13 pg. 389 |
| ___ refers to the number of cycles per second, measured in Hz | frequency ch. 13 pg. 389 |
| in this effect, it ejects an inner shell electron, leaving an opening. Another shell fills the opening and gives up energy in the form of characteristic ray. happens at low energy | photoelectric effect ch. 13 pg. 391 |
| in this interaction, it happens at high energy. x-ray photon from the outer shell is ejected. the x-ray photon is deflected | compton scatter ch. 13 pg. 391 |
| elongation and foreshortening are what types of distortion? | shape distortion ch. 12 pg. 350 |
| what artifact happens if the lead strips and the grid lines per inch matches the scan frequency of the scanner/reader | aliasing or Moire effect ch. 12 pg. 350 |
| ___ is used to remove the bright unexposed areas outside of the collimated field and contributes to veil glare | shuttering ch. 13 pg. 380 |
| bremsstrahlung radiation comprises what percentage of the x-ray beam | 70-90% ch. 13 pg. 388 |
| characteristic radiation comprises what percentage of the x-ray beam | 10-30% ch. 13 pg. 388 |
| this interaction happens at very low kV. the low kV electron interacts with an atom, the photon gets absorbed by the atom. | coherent scatter ch. 13 pg. 392 |
| what are other names for coherent scatter | classical, unmodified or rayleigh scatter ch. 13 pg. 392 |
| mobile equipment operates on ___? | rechargeable batteries ch. 13 pg. 393 |
| generators change ___ energy into ____ energy | mechanical energy to electrical energy ch. 13 pg. 394 |
| motors change ____ energy into ___ energy | electrical energy to mechanical energy ch. 13 pg. 394 |
| tilting tabletops must move ___ degrees vertically and ___degrees trendelenburg | 90 degrees vertically and 30 degrees trendelenburg ch. 13 pg. 397 |
| xray transformers operate on what kind of induction | mutual induction ch. 13 pg. 397 |
| transformers operate on what kind of induction | mutual induction ch. 13 pg. 399 |
| what are the materials that rectifiers could be made from | silicon, selenium, or germanium ch. 13 pg. 401 |
| a 3 phase/6 pulse rectification has what percentage of ripple | 13% ch. 13 pg. 400 |
| a single phase rectification produces what percentage of ripple | 100% ch. 13 pg. 400 |
| references for chapter 12 Saia, D.A. (2018). Image acquisition and technical evaluation In S. Barnes, C. M. Thomas (Eds.), Radiography Prep (9th ed., pp. 311-366).Chicago, IL: McGraw-Hill Education. | |
| references for chapter 13 Saia, D.A. (2018). Equipment operation and quality assurance In S. Barnes, C. M. Thomas (Eds.), Radiography Prep (9th ed., pp.367-486).Chicago, IL: McGraw-Hill Education. |
Created by:
klbowen