Exam (elaborations)
CT SCAN PRELIMS REVIEWER EXAM QUESTIONS AND ANSWERS
- Course
- Institution
CT SCAN PRELIMS REVIEWER EXAM QUESTIONS AND ANSWERS
[Show more]
Content preview
CT SCAN PRELIMS REVIEWER EXAMQUESTIONS AND ANSWERS
Common cuts for CT (cranial) - Answer-5mm
One of the principal disadvantages of third-generation CT imaging systems is the
occasional appearance of ______ - Answer-ring artifacts
There were ______ recognized generations of CT scanners; however, newer scanners
are no longer categorized by generation but by _________ - Answer-four, tube and
detector movement
What is the specific problem or limitation of x-ray that CT scan can overcome? -
Answer-Superimposition
As a 2-D image, conventional radiograph only possesses the? - Answer-width and
height
In a 3-D view, the image possesses the: - Answer-width, depth, height
Scans thin sections of the body with a narrow x-ray beam that rotates around the body,
producing images of each cross section - Answer-computed tomography (CT) scan
3 types of cross sections - Answer-axial, sagittal, coronal
Axial images are produced after? - Answer-Reconstruction
First data produced during scanning - Answer-raw data/raw cuts
Xray technical factors - Answer-kvp, mas, collimation
CT technical factors - Answer-kvp, mas, slice thickness, space gap, pitch, FOV
The smaller the slice thickness, the ______ - Answer-higher resolution
Major limitation of conventional radiography (x-ray) - Answer-Superimposition
Disadvantage of small cuts (ex: 2mm over 5mm) - Answer-high heat capacity, high
patient dose (because of increased/doubled scanning time)
If any single detector or bank of detectors malfunctions, the acquired signal or lack
thereof results in a _____ on the reconstructed image. - Answer-ring artifact
First cross sectional image produced after scanning - Answer-axial cuts
, Usually the only factor manipulated during CT scanning - Answer-slice thickness
Usual dose for CT scan - Answer-7000 mas
Another limitation of the conventional radiograph is its inability to distinguish between to
tissues with similar densities; otherwise called? - Answer-contrast resolution
The smaller the slice thickness, the ______ - Answer-higher patient dose
Views that are only possible after reconstruction - Answer-sagittal, coronal
Modality with the highest absorbed dose - Answer-CT scan
Preparation for KUB - Answer-full bladder (bladder should be expanded)
Distinguishes difference between bone and soft tissues - Answer-spatial resolution
Tomo - Answer-the word tomography has its root word ____
Limitations of x-ray that CT scan can give - Answer-three-dimensional view,
superimposition, contrast resolution
The unique physics of _____ allow for the differentiation between tissues of similar
densities - Answer-CT scan
In the case of CT, a sophisticated computerized method is used to obtain data and
transform them into ____ of the human body - Answer-cuts/cross-sectional slices
All early scanners produced axial cuts; therefore it was common to refer to older
scanning systems as? - Answer-computerized axial tomography (CAT) scan
Once the raw image is reconstructed to another plane (from axial to sagittal/coronal),
the resolution is ______ - Answer-degraded
CT scan manufacturers - Answer-GE, Siemens, Toshiba
CT scan is best to diagnose ______ - Answer-appendicitis
GE image feature is called? - Answer-scout
Siemens image feature is called? - Answer-Topogram
Toshiba image feature is called? - Answer-Scanogram
Who invented hot cathode ray tube - Answer-William Coolidge
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 biggdreamer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
78998 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now