Exam (elaborations)
Ch 6 CCD a questions and answers verified 2024
- Course
- Institution
Ch 6 CCD a questions and answers verified 2024
[Show more]
Content preview
Ch 6 CCDWhat is the oldest indirect- conversion digital rad system used
CCDs
CCD (charge-coupled device)
x-ray photons interact w scinitilation material ------> signal is transmitted by
lenses or fiber optics
CCD (charge-coupled device)
What happens during transmission process?
lenses reduce size of the visible image
CCD (charge-coupled device)
During transmission process once lenses reduce the size of the visible image
what happens to the image
transfers image to small capacitors( convert light into an electrical charge
CCD (charge-coupled device)
,During transmission process once lenses reduce the size of the visible image
and transfered image is sent to capacitors( convert light into an electrical
charge
What happens next
it is read out in a sequential pattern and released line & sent to ADC
A CCD (Charge Coupled Device)
CCD's consist of
thousand of light sensitive cells
CCD (charge-coupled device)
Light sensitive cells or pixels produce electric charge proportional to the
___________
amount of light received
CCD (charge-coupled device)
How are pixels arranged (structure wise) in CCD
arranged in a linear array or 2-D grid
, CCD (charge-coupled device)
CCD charge is transported across chips & read at corner of array. ADC then
converts pixels into digital value
CCD (charge-coupled device)
Structure and Function
What is the structure
photosensitive receptor and electronics embedded into a substrate material in
a silicon chip made up of a CCD
CCD (charge-coupled device)
Structure and Function
When the scintillators incident light strikes detector then ----->
electron/hole pairs are produced in the silicon.
CCD (charge-coupled device)
Structure and Function
Number of electron hole pairs directly related to _____________
amount of light that is absorbed
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 $13.79. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
77254 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now