TMS
Didactic Muse
Page 20
Imaging Ultrasound Cont.
Random Quiz:
Question 1: In order to produce the ultrasound waves, _________ is applied to
the crystal for it oscillates.
a. an electric pulse
b. an amplified signal
c. an elastic force
d. a mechanic pressure
Question 2: The same crystal inside the ultrasound probe that oscillates
to
generate the ultrasound waves, is the one which receives ___________to
produce the electric pulse used to produces the ultrasound images.
a. the modulated waves
b. the echoes
c. the photons
d. the electromagnetic force
Question 3: The acoustic impedance depends of ____________ the structure.
a. how hard is
b. the atomic number of
c. the density and elasticity of
d. the softness of
Question 4: The reflection coefficient depends of the difference_____________.
a. of voltage
b. of amplitude
c. of current
d. of acoustic impedance
Question 5: The bright mode ultrasound images (BM) converts the amplitude
the echoes to __________.
a. levels of voltages
b. levels of current
c. a gray scale
d. a spotty areas
Question 6: Time motion mode (TM) is used for _______________________.
a. Cardiac studies
b. Gynecologic studies
c. Obstetric studies
d. Small parts studies