Imaging 2 Chapter 6:
CCD/CMOS Image
Capture questions and
answers
Charge-Coupled Devices (CCDs) - 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. - 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. - answer What do the lenses of a CCD do during
transmission?
sequential - answer In what pattern is charge stored for a CCD?
Line by line - 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. - answer What makes up a CCD?
electrostatic forces - 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. -
answer The chip of a CCD is made up of:
photosensitive material, electronic gates. - answer The polysilicon
layer is coated with ______ and contains the ___________.
insulator - answer The silicon dioxide layer is an _________.
Charge store area - answer The silicon substrate contains the
__________
Detector element - answer What is another name for a pixel?
3, electrical potential - answer Each pixel contains _____ electrodes
that hold the electrons in a ________ well.
voltage gates - 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. - 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. - answer What is
the bucket brigade scheme
CCD/CMOS Image
Capture questions and
answers
Charge-Coupled Devices (CCDs) - 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. - 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. - answer What do the lenses of a CCD do during
transmission?
sequential - answer In what pattern is charge stored for a CCD?
Line by line - 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. - answer What makes up a CCD?
electrostatic forces - 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. -
answer The chip of a CCD is made up of:
photosensitive material, electronic gates. - answer The polysilicon
layer is coated with ______ and contains the ___________.
insulator - answer The silicon dioxide layer is an _________.
Charge store area - answer The silicon substrate contains the
__________
Detector element - answer What is another name for a pixel?
3, electrical potential - answer Each pixel contains _____ electrodes
that hold the electrons in a ________ well.
voltage gates - 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. - 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. - answer What is
the bucket brigade scheme
