Exam (elaborations)
Radiology: Digital Imaging questions with verified answers
- Module
- Institution
Radiology: Digital Imaging questions with verified answers
[Show more]
Seller
Follow
BravelRadon
Reviews received
Content preview
Radiology: Digital ImagingWhat does DICOM stand for? - correct answer ✔✔Digital Imaging and Communication in Medicine
Matrix size - correct answer ✔✔Row x column of a digital image - made up of pixels.
Pixel - correct answer ✔✔Picture element - in a digital radiograph each assigned a shade of gray based
on xray transmission pattern from that specific area
What is the size of most DICOM files? - correct answer ✔✔4-12 MB, MUCH larger than word docs or
images
Bit depth is what? - correct answer ✔✔The number of possible grey shades and is directly related to the
number of pixels in a file . Formed from binary code in the digital processor with binary numbers 1 & 2.
Usually range from 14-16, and because of the limitations of the humane eye there is little benefit beyond
this.
What are the two types of digital radiography? - correct answer ✔✔Computed radiography (CR) and
Direct digital radiography
What is the biggest difference in computed radiography and direct digital radiograph? - correct answer
✔✔For both systems the conventional x-ray tube, x-ray table and grid are used. In CR systems a cassette
containing a flexible image plate is used, where as with DR there is a rigid imaging plate.
Computed Radiograph involves what to process? - correct answer ✔✔Cassettes - similar to film screen,
but involves a imaging plate. The imaging plate is coated with photostimulable phosphor (PSP). The
image created by the xrays and patient is then temp stored as a latent image on PSP (in the form of
electrons). The imaging plate is then stimulated by a scanner that creates a visible image (from
electrons) that can be displayed on a screen. *This process is repeatable once the plate is returned back
to the cassette*
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 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 BravelRadon. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £7.97. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82871 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now