Exam (elaborations)
Chapter 10 DMSU 211 questions and answers verified 2024
- Course
- Institution
Chapter 10 DMSU 211 questions and answers verified 2024
[Show more]
Content preview
Chapter 10 DMSU 211Resolution is the ability to __________________. - correct answer ✔Create
accurate images.
Axial resolution measures the ability of a system to display two structures that
are very close together when the structures are ________ to the sound
beam's _________. - correct answer ✔Parallel; Main axis
Axial resolution answers the question: What is the ___________ that two
structures, or positioned front to back (or parallel to the sound beam) can be
apart and still produce ___________ on an ultrasound image? - correct
answer ✔Minimum distance; Two distinct echoes
Axial resolution deals with structures that are _________ to the sound beam. -
correct answer ✔Parallel
Axial resolution is measured in __________. - correct answer ✔mm, or any
other unit of distance.
Axial resolution is related to the ____________________. - correct answer
✔Spatial pulse length
_________ pulses improve axial resolution. - correct answer ✔Shorter
Axial resolution is also related to ______________. - correct answer ✔Pulse
duration
,Axial resolution is also called ________________, ______________,
_______________, or ________________. - correct answer ✔Longitudinal;
Range; Radial; Depth resolution
Is axial resolution adjustable? - correct answer ✔No
In clinical imaging, axial resolution ranges from __________ to __________.
______________ numerical values indicate shorter pulses and improved
image accuracy. - correct answer ✔0.1 to 1.0 mm; Lower
For axial resolution, use the mnemonic: - correct answer ✔LARRD
LARRD:
L = - correct answer ✔Longitudinal
LARRD:
A = - correct answer ✔Axial
LARRD:
First R = - correct answer ✔Range
LARRD:
Second R = - correct answer ✔Radial
LARRD:
D = - correct answer ✔Depth
, ______________ numerical values of axial resolution indicate a shorter pulse.
- correct answer ✔Lower
Shorter pulses create more accurate images; therefore, the image quality is
better when axial resolution has a ________ numerical value. - correct
answer ✔Lower
Axial resolution is determined by the ___________, with ____________
pulses yielding improved _______________. - correct answer ✔Pulse
length; Shorter; Axial resolution
A short pulse is created in two ways:
1) ________ ringing
2) __________ frequency - correct answer ✔Less; Higher
A pulse is short if there are few cycles in the pulse, just like a train is short if
there are few cars in the train. This is known as ______________. - correct
answer ✔Less ringing
One way to reduce ringing is to ______________ after it has been excited by
an electrical signal from the system. - correct answer ✔Dampen the crystal
Shorter wavelengths are characteristic of higher frequency sound. Pulses
made of higher frequency cycles have superior _______________. - correct
answer ✔Axial resolution
Better axial resolution is associated with the following:
_________ spatial pulse length - correct answer ✔Shorter
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 $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80630 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now