Physics Fluoroscopy Exam Questions and Answers All Correct
2 views 0 purchase
Course
Physics Fluoroscopy
Institution
Physics Fluoroscopy
Physics Fluoroscopy Exam Questions and Answers All Correct
What is the weakest link to the image intensifier? - Answer- TV camera tube
The parts on the input side of the intensifier? - Answer- Input phosphor and photocathode
What does the input phosphor do? - Answer- Converts photons into l...
Physics Fluoroscopy Exam Questions
and Answers All Correct
What is the weakest link to the image intensifier? - Answer- TV camera tube
The parts on the input side of the intensifier? - Answer- Input phosphor and
photocathode
What does the input phosphor do? - Answer- Converts photons into light
What does the photocathode do? - Answer- Converts light into electrons
What is input phosphor COMMONLY made of? - Answer- Cesium-Iodide
but can be made with zinc-camnium as well
What is adjacent to the input phosphor? - Answer- Photocathode
Explain the cycle of the intensifying tube - Answer- Comes through the input phosphors
where the x-ray photons are converted into light, then goes through the photocathode
where the light is converted into electrons, then it hits the the electrostatic lens which is
a negative charge and it pushes up to the anode, where the output phosphors converts
the electrons back to light.
What are TV camera tubes? - Answer- Vidicon and Plumbicon
What is the purpose of the vidicon and plumbicon - Answer- it converts light photons
into video
Where are the TV cameras located? - Answer- Attached to the output phosphor
Electrostatic Lenses - Answer- are a series of charged electrodes located inside the
glass envelope of the tube. Because the electrons are negative, the charge of the
lenses accelerates and focuses the electron stream, which carries the fluoroscopic
image.
Automatic Brightness Gain - Answer- Automatically focuses (fixes) itself when it has
different densities
How does it automatically fix itself? - Answer- increases the mAs and the KV
Another phrase for voltage - Answer- Potential difference
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 Scholarsstudyguide. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
