Exam (elaborations)
Chapter 6 CCD b questions and answers already passed 2024
- Course
- Institution
Chapter 6 CCD b questions and answers already passed 2024
[Show more]
Content preview
Chapter 6 CCD/CMOScharge-coupled devices (CCDS) - correct answer ✔The oldest indirect
conversion digital radiography systems used ________ to acquire the digital
image.
scintillation/ lenses or fiber - correct answer ✔In a CCD system, x-ray
photons interact with a ______ material and the signal is transmitted by _____
or _____ optics to the CCD.
size/ light to electrical charge - correct answer ✔During the transmission
process, the lenses reduce the ____ of the projected visible light image and
transfer the image to one or more small capacitors that convert ______ to
_______.
analog-to-digital converter (ADC) - correct answer ✔This charge is stored in
a sequential pattern and released line by line and sent to an ___________.
photosensitive receptor - correct answer ✔A ___________ and electronics
embedded into a substrate material in a silicon chip make up a CCD.
Incident light - correct answer ✔_________ from a scintillator strikes the
detector and electron/hole pairs are produced in the silicon.
light - correct answer ✔The number of electron/hole pairs is related to the
amount of ______ that is absorbed.
electrostatic forces - correct answer ✔The electrons are held by _______ in
the array until the charge is read out to from the image.
, polysilicon layer, silicon dioxide layer, silicon substrate - correct answer
✔The chip is made up of a ______ layer, _____ layer, and a _____.
polysilicon - correct answer ✔The _______ layer is coated with a
photosensitive material and contains electronic gates.
silicon dioxide/ silicon substrate - correct answer ✔The _______ layer is an
insulator and the _____ contains the charge storage area.
detector element (del) - correct answer ✔Each pixel or _______ contains
three electrodes that hold the electrons in a electrical potential wall.
voltage gates/ electrons - correct answer ✔The dels are formed by _______
that, at readout, are opened and closed like gates to allow the flow of _____.
readout row/ "bucket brigade scheme" - correct answer ✔To collect the
charge on the silicon chips, the voltage sign is changed on the electrodes
within each del, moving the electrons by rows down the columns until the
_______ is reached. This is known as what?
amplifier - correct answer ✔Once the readout row is reached, the data are
sent sequentially to the sense _____ and are then digitized.
electrons - correct answer ✔There can be issues with overfill in the dels,
which causes excessive _____ to spill out of the del into an adjacent del.
"blooming" - correct answer ✔This is handled by building overflow drains into
the array to reduce or prevent this "_____" effect.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LEWISSHAWN55. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.59. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73091 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now