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Imaging 2 Chapter 6. questions and answers verified 2024
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Imaging 2 Chapter 6. questions and answers verified 2024
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Imaging 2 Chapter 6: CCD/CMOS ImageCapture
Charge-Coupled Devices (CCDs) - correct answer ✔What did the oldest
indirect conversion digital radiography systems use?
x-ray photons interact with a scintillator material and the signal is transmitted
by lenses or fiber optics to the CCD. - correct answer ✔What is the process
of image capture for CCD?
Reduce the size of the projected visible light and transfer the image to one or
more small capacitors that convert light to electrical charge. - correct answer
✔What do the lenses of a CCD do during transmission?
sequential - correct answer ✔In what pattern is charge stored for a CCD?
Line by line - correct answer ✔How is the signal released and sent to the
ADC?
a photosensitive receptor and electrics embedded into a substrate material in
a silicon chip. - correct answer ✔What makes up a CCD?
electrostatic forces - correct answer ✔Electrons are held by _______ in the
array until the charge is read out to form an image.
polysilicon layer, a silicon dioxide layer, and a silicon substrate. - correct
answer ✔The chip of a CCD is made up of:
, photosensitive material, electronic gates. - correct answer ✔The polysilicon
layer is coated with ______ and contains the ___________.
insulator - correct answer ✔The silicon dioxide layer is an _________.
Charge store area - correct answer ✔The silicon substrate contains the
__________
Detector element - correct answer ✔What is another name for a pixel?
3, electrical potential - correct answer ✔Each pixel contains _____
electrodes that hold the electrons in a ________ well.
voltage gates - correct answer ✔The del (detector elements) are formed by
_______________ that, at readout, open and close like gates to free
electrons.
voltage sign is changed on electrodes within each del, moving by rows and
columns down until the readout row is reached. - correct answer ✔How is
the charge collected on the silicon chips?
The process of electron movement during image processing; voltage gates
within the detector are closed, allowing electrons to flow by rows and down by
columns to the readout row. - correct answer ✔What is the bucket brigade
scheme
data are sent sequentially to the sense amplifier and are then digitized. -
correct answer ✔What happens once the data reaches the readout row?
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