Exam (elaborations)
ARDMS SPI 500 QUESTIONS WITH CORRECTLY SOLVED ANSWERS.
- Course
- Institution
ARDMS SPI 500 QUESTIONS WITH CORRECTLY SOLVED ANSWERS.
[Show more]
Seller
Follow
Content preview
ARDMS SPI 500 QUESTIONS ANDAPPROVED ANSWERS.
A sound wave is --Answer-- mechanical, longitudinal
A compression area of a sound wave is --Answer-- high pressure, high
density
A rarefaction area of a sound wave is --Answer-- low pressure, low density
Which is considered an acoustic variable --Answer-- pressure
Which is a unit for pressure --Answer-- N/m2
Which is a unit for density --Answer-- lbs/cm3
Which wave propagates in a medium --Answer-- sound
The range for ultrasound is --Answer-- greater than 20KHz
____ is the number of wave cycles per second --Answer-- frequency
One kilohertz is equal to --Answer-- 1,000 cycles per second
One megahertz is equal to --Answer-- 1,000,000 cycles per second
The useful frequency range for clinical imaging ultrasound is --Answer-- 2
MHz to 10 MHz
Frequency is determined by the --Answer-- source
Frequency affects all of the following, except: wavelength, resolution,
penetration, impedance --Answer-- impedance
The times per cycle is --Answer-- period
, The period for a 5 MHz probe is --Answer-- 0.2usec
If frequency increases, period will --Answer-- decreases
Period is determined by the --Answer-- source
Period multiplied by the number of cycles in a pulse equals --Answer-- pulse
duration
The distance between cyclical peaks is --Answer-- wavelength
The symbol for wavelength is --Answer-- lambda
The wavelength of a 5 MHz probe in soft tissue is --Answer-- 0.3 mm
As frequency increases, wavelength (assume same medium) --Answer--
decreases
Wavelength is determined by the --Answer-- source and medium
As wavelength decreases --Answer-- resolution improves
The rate at which a sound vibration propagates through a medium is called
all of the following, except: sound speed, prop speed, speed of sound,
velocity --Answer-- velocity
The units for propagation speed include all the following, except: km/sec,
mph, msec, mm/sec --Answer-- msec
The average speed of sound in soft tissue is --Answer-- 1540 m/sec
Arrange the following in increasing order of sound speed in soft tissue --
Answer-- air, fat, muscle, soft tissue, muscle, bone
The prop speed of sound of the ceramic lead zirconate titanate (PZT) is
approx --Answer-- 4000 m/sec
speed of sound is determined by --Answer-- medium
The peak variation minus the mean variation is --Answer-- amplitude
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 Topclass. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.39. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79373 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now