an increase in which parameter will improve the ac
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SPI prep 2024 Questions and Answers with Complete
Solutions | Updated 2024
an increase in which parameter will improve the accuracy of velocity
measurements with auto correlation?
a. color field of view
b. packet size
c. wall filter setting
d. transmitted freq
a. color field of view
with harmonic imaging, how does echo frequency relate to transmitted
frequency?
a. half the transmitted freq
b. equal to the transmitted freq
c. twice the transmitted freq
d. four times the transmitted freq
c. twice the transmitted freq
which factor limits image frame rate?
A.transducer operating frequency
,B.Sample volume size
C.Speed of sound in tissue
D.Spatial pulse length
C. Speed of sound in tissue
Which term describes the averaging together of scan lines from multiple angles to
create one image?
a. harmonic imaging
b. real-time 3D imaging
c. elastography
d.spatial compounding
d. spatial compounding
which variable can cause an acoustic shadow artifact?
a. small acoustic impedance mismatch
b. refraction
c. perpendicular incidence
d. low attenuation
a. small acoustic impedance mismatch
,The center freq of a transducer depends primarily upon which characteristic of
the crystals
a. width
b. length
c. spacing
d. thickness
d. thickness
when using a 5 MHz transducer, in which tissue is the ultrasound wavelength the
shortest?
a. fat
b. blood
c. bone
d. muscle
a. fat
what does coded excitation improve in addition to penetration?
a. lateral resolution
b. signal to noise ration
c. frame rate
, d. dynamic range
b. signal to noise ratio
what is the advantage of using pulsed wave doppler compared to continuous
wave doppler?
a. higher echo sensitivity
b. ability to select sample depth
c. decreased display of aliasing
d. improved temporal resolution
b. ability to select sample depth
what is the doppler shift freq?
a. received ultrasound freq X transmitted freq
b. difference between transmitted freq and received freq
c. sum of the transmitted freq and received freq
d. ration of the transmitted freq to the received freq
b. difference between transmitted freq and received freq
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