Sonography Canada Core Review – Complete Study Guide Rated 100% Correct

Sonography Canada Core Review
Rated 100%
Correct!!
f - Answer v/wavelength

frequency- Answer number of cycles per second

T - Answer 1/f

Period- Answer length of time for one cycle

1540 m/s- Answer speed of sound in soft tissue

infrasound- Answer <20Hz

audible sound- Answer 20Hz-20,000Hz

ultrasound- Answer >20,000Hz

c - Answer = root (bulk modulus/density)
or
=stiffness/density

bulk modulus- Answer stress/strain

I - Answer = P/a

P - Answer = E/T

Amplitude- Answer maximum deviation from normal

A - Answer = max-normal

A^2 - Answer proportional to intensity and power

PRP - Answer = 1/PRF

line time- Answer (PRP) time for one scan line

PRF - Answer number pulses per sec

PRP/ PRF factors- Answer depth
speed of sound

, Sonography Canada Core Review
Rated 100%
Correct!!

PD - Answer =T x # cycles per pulse

DF - Answer = PD/PRP

SPL - Answer = wavelength x #cycles in one pulse

Ax Res - Answer = SPL/2

Range Eqn- Answer d=0.77t

Attenuation (eqn)- Answer =0.5fL

Attenuation coefficient
- Answer 0.5dB/cm soft tissue

Z - Answer =cp

% reflection- Answer =[z2-z1/z2+z1]^2

bit depth- Answer =2^n

IRC - Answer = reflected intensity/incident intensity

NZL - Answer = (crystal diam^2 x f)/ 6

Young's Modulus- Answer =3pc^2
or
= stress/strain

methods with highest thermal risk/ lowest mech- risk
Answer CW and PW spectral

Methods with lowest thermal risk/ highest mech- risk
Answer B mode

Isppa - Answer mech risk

highest Isppa- Answer 190W/cm^2

Ispta - Answer thermal risk

highest Ispta- Answer 720mW/cm^2