Exam (elaborations)
Sonography Canada – Core 114 Complete Questions And Answers (A+)
- Module
- Sonography Canada – Core
- Institution
- Sonography Canada – Core
Sonography Canada – Core 114 Complete Questions And Answers (A+)
[Show more]
Content preview
Sonography Canada – Core 114 Complete QuestionsAnd Answers (A+)
Quiz :what is the I SPPA for mechanical bioeffects? - Answer :190W/cm^2
Quiz :what is the I SPTA for thermal bioeffects? - Answer :720mW/cm^2
Quiz :recommended MI for fetal scanning - Answer :MI < 1.9
Quiz :recommended TI for fetal scanning - Answer :TI < 0.7
Quiz :after what fetal age is safe to use PW doppler? - Answer :14 weeks
Quiz :what does ALARA stand for - Answer :as low as reasonably achievable
Quiz :frequency - Answer :# of cycles/second
f = 1/p
Quiz :period - Answer :time it takes for 1 cycle to occur (usec)
P = 1/f
Quiz :wavelength - Answer :length of 1 cycle (mm)
wavelength = c/f
inversely proportionate to frequency
Quiz :assumed speed of sound in soft tissue - Answer :1540 m/s
1.54mm/usec
Quiz :intensity - Answer :I = power/area
measured in Watts
proportionate to amplitude squared
Quiz :range equation - Answer :distance to reflector = 1/2 speed of sound x
GRT
Quiz :go return time (GRT) - Answer :13usec for 1cm of depth
Quiz :acoustic impedance (z) - Answer :difference between media
determining % reflection and % transmission of sound (Rayls)
z= density x speed of sound
, z=pxc
Quiz :% reflection equation - Answer :
Quiz :larger AI difference results in ___ reflection - Answer :greater
Quiz :pulse duration (PD) - Answer :time for one pulse
tx is ringing
PD = period x n; n = # of cycles in pulse
Quiz :pulse repetition period (PRP) - Answer :the time from the beginning of
one pulse to the beginning of the next
time tx is ringing and listening for 1 scan line
PRP = 13usec/cm x imaging depth
Quiz :pulse repetition frequency (PRF) - Answer :# of pulses in 1 second (kHz)
PRF = 1/PRP
Quiz :duty factor - Answer :% tx is ringing over tx ringing and listening
DF = (PD/PRP) x 100%
Quiz :frame time - Answer :time it takes to create a single frame (msec)
FT = PRP x lines/frame
Quiz :frame rate - Answer :# of frames per second (Hz)
FR = 1/FT
Quiz :spatial pulse length (SPL) - Answer :length of space of one pulse (mm)
SPL = wavelength x n; n = # of cycles in pulse
Quiz :Is sound a transverse or longitudinal wave? - Answer :longitudinal
Quiz :what kind of pressure wave is sound? - Answer :mechanical
Quiz :infrasound range - Answer :< 20Hz
Quiz :audible sound range - Answer :20Hz - 20kHz
Quiz :ultrasound range - Answer :>20kHz
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 HELLENAH. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £8.01. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82977 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now