Exam (elaborations)
SPI Review Questions - Davies With 100% Verified Answers | Guaranteed Success 2024
- Course
- Institution
SPI Review Questions - Davies With 100% Verified Answers | Guaranteed Success 2024
[Show more]
Content preview
SPI Review Questions - Davies With100% Verified Answers | Guaranteed
Success 2024
Will not cause a redirection of part of the ultrasound energy CORRECT ANSWERS absorption
You are scanning a large mass composed primarily of fat. What will you most likely encounter? CORRECT ANSWERS axial misregistration of object distal to the mass on the screen due to the slower propagation speed through fat
What 2 conditions must be present to cause a refraction in soundwave? CORRECT ANSWERS oblique incidence and
change in propagation speed
What may be detected with refraction? CORRECT ANSWERS lateral misregistration
Of the following structures, which is the most attenuating: blood, bile, lung tissue, calcification? CORRECT ANSWERS calcifications - leaves a shadow
What can you do to enhance the visibility of specular reflectors? CORRECT ANSWERS
perpendicular incidence
What tissue/sound interaction is primarily responsible for imaging internal structures of organs? CORRECT ANSWERS scattering
What tissue/sound interaction is necessary for an ultrasound image? CORRECT ANSWERS reflection
For soft tissues, what is needed for determining what a specific impedance is? CORRECT ANSWERS bulk modulus and interface
You are imaging a structure that is highly attenuating. What imaging artifact would you expect to encounter? CORRECT ANSWERS shadowing
Does sound travel slower through air or through soft tissue? CORRECT ANSWERS air
An increase in transmit power changes what? CORRECT ANSWERS acoustic power
What would you change if image does not show adequate penetration in far field and shows noise instead of tissue? CORRECT ANSWERS decrease the transmit frequency because lower frequency penetrates better What is the range of frequencies for human hearing? CORRECT ANSWERS 20Hz - 20,000Hz
Maximum cyclical change in quantity is known as? CORRECT ANSWERS amplitude
Bulk modulus is closely related to? CORRECT ANSWERS stiffness
Time it takes for one ? CORRECT ANSWERS period
If number of cycles in a pulse is increased but wavelength remains the same, what changes? CORRECT ANSWERS pulse duration
Which transducer would you use for a large patient that would have the least amount of signal attenuation? CORRECT ANSWERS lower frequency - goes deeper
Speed of ultrasound in bone? CORRECT ANSWERS 4080 m/s
Speed of sound is defined as? CORRECT ANSWERS speed at which sound propagates through a medium
Longitudinal wave is characterized by? CORRECT ANSWERS it travels in one direction
What regions of a wave show decreased particle density in a medium? CORRECT ANSWERS rarefaction
Terms used to describe the strength of a sound beam? CORRECT ANSWERS amplitude, intensity
Ultrasound propagation velocity depends on? CORRECT ANSWERS density and compressibility (stiffness)
The frequency of the transmission signal is determined by? CORRECT ANSWERS the frequency of the electric signal applied to the transducer
When you adjust PRF, you are changing what? CORRECT ANSWERS the number of pulses per second
Time it takes for one pulse to occur is known as? CORRECT ANSWERS pulse duration
Length it takes for one cycle to occur? CORRECT ANSWERS wavelength
Bandwidth refers to what? CORRECT ANSWERS range of frequencies
What kind of amplitude does "in phase" give? CORRECT ANSWERS increased
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 ElevatedExcellence. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80202 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now