Exam (elaborations)
Computed Tomography Ch 1-4 Quiz correctly answered already passed
- Course
- Institution
Computed Tomography Ch 1-4 Quiz correctly answered already passed
[Show more]
Seller
Follow
BravelRadon
Reviews received
Content preview
Computed Tomography Ch 1-4 QuizIn _________ compression, there is no loss of information in the compressed image. - correct answer
✔✔Lossless or reversible
Lossy or irreversible compression involves at least 3 steps, image transformation, quantization, and
___________. - correct answer ✔✔Encoding
______ refers to using one or more software and or hardware techniques to reduce informaiton by
removing unnecessary data. - correct answer ✔✔Digital compression
Image postprocessing methods in CT are intended to: - correct answer ✔✔Enhance the diagnostic
interpretation skills of the radiologist.
______ is responsible for high speed processing of the input digital data. - correct answer ✔✔Internal
image processor
Hounsfeld's work produced a technique that revolutionized medicine and diagnostic radiology. He called
the technique: - correct answer ✔✔computerized transverse axial scanning (tomography)
The formation of CT images by a CT scanner involves: - correct answer ✔✔Data acquistion, image
reconstruction, image display, manipulation, storage, recording and communication (All of the above)
The computer uses special mathematical techniques to reconstruct the CT image in a finite number of
steps called: - correct answer ✔✔Cone beam image reconstruction algorithm
Algebraic reconstruction technique
image reconstruction algorithms
ALL OF THE ABOVE
Data acquisition refers to the systematic collection of information from the _____ to produce CT images -
correct answer ✔✔Patient
, The process of changing the CT image gray scale is referred to as: - correct answer ✔✔Windowing
Which beam is used to scan a volume of tissue rather than a single? - correct answer ✔✔Spiral or Helical
What is the most recent MSCT scanner commercially available for clinical imaging for patients? - correct
answer ✔✔64 slice
What is the beam called when all the photons have the same energy? - correct answer ✔✔Homogenous
How many generations of computers are there? - correct answer ✔✔5
An example of binary numbering is: - correct answer ✔✔01011
The goal of CT is to overcome the limitation of radiology and tomography by achieving the following: -
correct answer ✔✔Minimal superimposition
Improving image contrast
Recording of very small differences in tissue contrast
ALL OF THE ABOVE
The first whole body CT Scanner was developed by: - correct answer ✔✔Dr. Robert Ledley
How many bits make a byte? - correct answer ✔✔8
ROM stands for - correct answer ✔✔Read only memory
How many bytes in a gigabyte? - correct answer ✔✔1,000,000,000
RAID stands for - correct answer ✔✔redundant array of independent disks
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 EFT, 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 this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BravelRadon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R242,25. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now