Part 9 Question and answers already passed 2024/2025
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Course
WDD
Institution
WDD
Part 9 Question and answers already passed 2024/2025 Part 9: Image Processing and Quality Assurance
Does higher or lower image contrast result from a *narrow/decreased beam width* - correct answer increased/higher contrast
what is the term used to describe *number of pixels per unit area...
Part 9: Image Processing and Quality
Assurance
Does higher or lower image contrast result from a *narrow/decreased beam
width* - correct answer ✔increased/higher contrast
what is the term used to describe *number of pixels per unit area* - correct
answer ✔pixel density
what is the term used to describe *distance from the center of one pixel to the
center of the adjacent pixel?* - correct answer ✔*pixel pitch*
how do *changes in pixel density and pixel pitch impact spatial resolution* -
correct answer ✔increased pixel density = increased resolution
increase pixel pitch = decrease resolution
how is *receptor exposure* related to *quantum mottle/noise* - correct
answer ✔decrease exposure = > likelihood of quantum noise
(something that is underexposed will have more "mottling/noise", eg. a bone
will have varying degrees of grey in it, instead of being all one color grey)
how is each *TFT DEL* (thin film transistor detector agent) related to *spatial
resolution* in cassetteless digital imaging - correct answer ✔smaller DEL =
better resolution
what kind of *dynamic range* allows optimal visualization of *both tissue and
bony structures* - correct answer ✔wide dynamic range
, *undesirable fluctuations in image brightness*, dependent on how many xray
photons hit the image receptor, is called ______ - correct answer ✔quantum
noise
how is *increased mA* likely to affect *signal-to-noise ration (SNR)* - correct
answer ✔increased mA = increased SNR
(Signal = good things, what we're looking for on Xray)
(Noise = Variations in brightness, interruptions)
Increased SNR = Higher signal, lower noise. Do this by INC the mA
3 methods for providing proper identification on radiographic image
(Ie. ways to put patient's information on X-Ray image) - correct answer
✔Photographic
Radiologic
Electronic
what general environment should boxes of films be stored in - correct answer
✔in a cool dry place
what is the *minimum information legally required* on every image - correct
answer ✔"PIDOS":
Patient name
ID number
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