Exam Review Sonographic Principles and instrumentation Penny Questions and answers
6 views 0 purchase
Course
Sonography
Institution
Sonography
Which is described as the ability of an object to resist compression and relates to the harness of a medium
a stiffness
b density
c pressure
d inertia
a Stiffness
An increase in PRF would lead to
a an increase in DF
b a decrease in PD
c an increase in the number of cycles
d decrease...
Exam Review Sonographic
Principles and instrumentation
Penny Questions and answers
Which is described as the ability of an object to resist compression
and relates to the harness of a medium
a stiffness
b density
c pressure
d inertia - answer a Stiffness
An increase in PRF would lead to
a an increase in DF
b a decrease in PD
c an increase in the number of cycles
d decrease in resolution - answer a an increase in DF
Which of the following would have the highest propagation speed
a air
b bone
c soft tissue
d water - answer b bone
As imaging depth increases, PRF must:
a not change
b increase
c decrease
,d PRF does not relate to PRF - answer b increase:
depth and PRF are INVERSELY related
Which describes the amount of refraction that occurs at an
interface?
a Bernoulli's law
b Poiseuille's law
c Law of reflection
d Snell's law - answer d Snell's Law
Which of the following would have the lowest propagation speed
a water
b soft tissue
c bone
d lung tissue - answer D lung tissue
Pressure is typically expressed in :
a. Frequency
b. Pascals
c. Decibels
d. Kilograms per centimeter cubed - answer b pascals
The typical range if frequency for diagnostic ultrasound imaging is:
a 20 - 20,000 Hz
b 1-20 MHz
c 2-15 kHz
d 12-100 Mhz - answer b 2-15 kHz
,The attenuation coefficient in soft tissue is equal to:
a 1/2 of the operating frequency
b double the operating frequency
c frequency x path length
d the total decibels - answer a 1/2 of the operating frequency
Micro denotes
a. Millionth
b. Hundredth
c. Million
d. Billionth - answer a. Millionth
Which of the following is described as the distance over which one
cycle occurs?
A PD
B DF
C period
D wavelength - answer D wavelength
Which of the following requires an oblique interface and
propagation speed mismatch?
A reflection
B refraction
C normal incidence
D dampening - answer B refraction
Areas of high pressure and density are referred to as:
A compressions
, B Rarefractions
C Diffractions
D Refractions - answer A Compressions
SPL can be calculated by:
A multiplying the number of cycles by the frequency
B dividing the period by the frequency
C multiplying the number of cycles by the wavelength
D Dividing the number of cycles by the wavelength - answer C
multiplying the number of cycles by the wavelength
Density is typically measured in:
A kilograms per centimeter cubed
B millimeters
C watts per square centimeter
D pascals - answer A. Kilograms per centimeter cubed
As a sound wave travels through the human body, the intensity of
the sound wave decreases as a result of:
A attenuation
B Elevational resolution
C Huygens principle
D refraction - answer A Attenuation
What is the total amount of attenuation that occurs if a 6.0 MHz
sound beam travels through 4 cm of soft tissue?
A 24 dB
B 12 dB
C 6dB
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 BRAINBOOSTERS. 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.
