Sonography Canada Core Review
Questions & ANSWERS RATED
100% CORRECT
frequency - correct answer ✔✔number of cycles per second
f - correct answer ✔✔v/wavelength
T - correct answer ✔✔1/f
1540 m/s - correct answer ✔✔speed of sound in soft tissue
Period - correct answer ✔✔length of time for one cycle
infrasound - correct answer ✔✔<20Hz
audible sound - correct answer ✔✔20Hz-20,000Hz
ultrasound - correct answer ✔✔>20,000Hz
bulk modulus - correct answer ✔✔stress/strain
c - correct answer ✔✔= root (bulk modulus/density)
or
,=stiffness/density
I - correct answer ✔✔= P/a
Amplitude - correct answer ✔✔maximum deviation from normal
P - correct answer ✔✔= E/T
A - correct answer ✔✔= max-normal
A^2 - correct answer ✔✔proportional to intensity and power
PRP - correct answer ✔✔= 1/PRF
line time - correct answer ✔✔(PRP) time for one scan line
PRF - correct answer ✔✔number pulses per sec
PRP/ PRF factors - correct answer ✔✔depth
speed of sound
PD - correct answer ✔✔=T x # cycles per pulse
DF - correct answer ✔✔= PD/PRP
SPL - correct answer ✔✔= wavelength x #cycles in one pulse
, Ax Res - correct answer ✔✔= SPL/2
Range Eqn - correct answer ✔✔d=0.77t
Attenuation (eqn) - correct answer ✔✔=0.5fL
Attenuation coefficient - correct answer ✔✔0.5dB/cm soft tissue
Z - correct answer ✔✔=cp
% reflection - correct answer ✔✔=[z2-z1/z2+z1]^2
bit depth - correct answer ✔✔=2^n
IRC - correct answer ✔✔= reflected intensity/incident intensity
NZL - correct answer ✔✔= (crystal diam^2 x f)/ 6
Young's Modulus - correct answer ✔✔=3pc^2
or
= stress/strain
Methods with lowest thermal risk/ highest mech risk - correct answer ✔✔B mode
methods with highest thermal risk/ lowest mech risk - correct answer ✔✔CW and PW spectral
Questions & ANSWERS RATED
100% CORRECT
frequency - correct answer ✔✔number of cycles per second
f - correct answer ✔✔v/wavelength
T - correct answer ✔✔1/f
1540 m/s - correct answer ✔✔speed of sound in soft tissue
Period - correct answer ✔✔length of time for one cycle
infrasound - correct answer ✔✔<20Hz
audible sound - correct answer ✔✔20Hz-20,000Hz
ultrasound - correct answer ✔✔>20,000Hz
bulk modulus - correct answer ✔✔stress/strain
c - correct answer ✔✔= root (bulk modulus/density)
or
,=stiffness/density
I - correct answer ✔✔= P/a
Amplitude - correct answer ✔✔maximum deviation from normal
P - correct answer ✔✔= E/T
A - correct answer ✔✔= max-normal
A^2 - correct answer ✔✔proportional to intensity and power
PRP - correct answer ✔✔= 1/PRF
line time - correct answer ✔✔(PRP) time for one scan line
PRF - correct answer ✔✔number pulses per sec
PRP/ PRF factors - correct answer ✔✔depth
speed of sound
PD - correct answer ✔✔=T x # cycles per pulse
DF - correct answer ✔✔= PD/PRP
SPL - correct answer ✔✔= wavelength x #cycles in one pulse
, Ax Res - correct answer ✔✔= SPL/2
Range Eqn - correct answer ✔✔d=0.77t
Attenuation (eqn) - correct answer ✔✔=0.5fL
Attenuation coefficient - correct answer ✔✔0.5dB/cm soft tissue
Z - correct answer ✔✔=cp
% reflection - correct answer ✔✔=[z2-z1/z2+z1]^2
bit depth - correct answer ✔✔=2^n
IRC - correct answer ✔✔= reflected intensity/incident intensity
NZL - correct answer ✔✔= (crystal diam^2 x f)/ 6
Young's Modulus - correct answer ✔✔=3pc^2
or
= stress/strain
Methods with lowest thermal risk/ highest mech risk - correct answer ✔✔B mode
methods with highest thermal risk/ lowest mech risk - correct answer ✔✔CW and PW spectral
