SPI Mock Registry Exam C20 Questions & Answers 2023/2024
As frequency increase, the amount of scatter - ANSWER-increases
Which physics principle describes the decrease in pressure at a stenosis due to increased velocity at the site? - ANSWER-Bernoulli Prinicple
______ occurs posterior to h...
SPI Mock Registry Exam C20 Questions
& Answers 2023/2024
As frequency increase, the amount of scatter - ANSWER-increases
Which physics principle describes the decrease in pressure at a stenosis due to increased velocity at the
site? - ANSWER-Bernoulli Prinicple
______ occurs posterior to highly attenuating structures - ANSWER-shadowing
Constructive and destructive interference are demonstrated on the image as what acoustic artifact? -
ANSWER-speckle
What part of the ultrasound system is responsible for changing the PRF with changes in image depth? -
ANSWER-pulser
Which type of phantom is necessary to evaluate temporal resolution? - ANSWER-Fluid-filled doppler
phantom
Which system component improves lateral resolution? - ANSWER-pulser
If the frequency of the beam increases, the propagation speed in the media will _____________ -
ANSWER-not change
Which of the following correctly describes a limitation of the fast fourier transformer - ANSWER-requires
a minimum of two samples per cycle to process and produce a doppler tracing
An advantage of virtual beam forming over traditional pulse-echo instrumentation is: - ANSWER-no
transmit focusing is needed
, Some US transducer arrays allow you to reduce the thickness of the beam, as an additional type of
focusing. What effect will this change have on the image? - ANSWER-improved elevational resolution
All of the following are appropriate reasons to perform a contrast enhanced ultrasound exam, except? -
ANSWER-improve the visualization fo bowel segments
Range equations: distance to reflector = - ANSWER-propagation speed X 1/2 (time to and from reflector)
If you are performing an abdominal exam, but inadvertently select the carotid preset on the machine,
how will this affect you exam? - ANSWER-Depth settings will be very superficial
Cardiac strain imaging is used to evaluate the function of the: - ANSWER-myocardium
What US system function converts the returned waves into all positive voltages (compressions)? -
ANSWER-rectification
The ultrasound image is usually created using all of the reflected frequencies in a pulse. When using
___________ the reflected frequencies are divided into smaller sections and each of the sections is used
to create an image. - ANSWER-frequency compounding
As the element diameter decreases, the focal length________ - ANSWER-will decrease
When using virtual beam forming the ultrasound beam is described as: - ANSWER-laser-thin
Resistive index is a ratio utilized to quantify which of the following? - ANSWER-resistance to flow
While scanning soft tissue, the reflected wave returned to the transducer in 0.05msec. How far away is
the reflector. - ANSWER-4cm
Which of the following is a function of the signal processor? - ANSWER-filtering and compression
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 Bensuda. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.35. You're not tied to anything after your purchase.
