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vtest ARRT SONO exam edge
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test ARRT SONO exam edgeAll but which of the following are disadvantages of using a linear transducer? -
ANS-poor resolution near the transducer
(
With a linear transducer, multiple parallel elements are arranged in a straight line,
producing a rectangular image field. The main disadvantages of a linear transducer are
that it has a large footprint and it cannot scan through a narrow acoustic window close
the transducer. It also does not have the best resolution of structures at greater depths.
)
All but which of the following are sonographic signs of chronic hepatitis? -
ANS-Hyperechoic portal vein walls.
In chronic hepatitis, as opposed to acute hepatitis, there is decreased echogenicity of
the portal vein walls. Other signs include enlarged liver and hypoechoic liver
parenchyma.
Biparietal diameter below what percentile are considered abnormal? - ANS-10%
10th percentile
BPD is used once the gestational age is known to assess normal growth rate. When the
measurement is below the 10th percentile it would indicate retarded growth.
Doppler color can be used on top of which mode to better show blood flow? - ANS-b
mode
The B-mode is the typical gray-scale image mode and can be enhanced with Doppler
mode color to show how blood is flowing. This is commonly used to measure
regurgitation in heart valves.
Each fallopian tube extends from what? - ANS-Each ovary
There are two fallopian tubes. Each fallopian tube is approximately 4 inches long. They
extend from each ovary. Their job is to move the ovum from the ovaries into the uterus.
It is important to note that no contact of the fallopian tubes and the ovaries occurs.
, How are the gaps filled between the scan lines in the scan converter? -
ANS-interpolation
How does focusing the beam affect the length of the near field? - ANS-it does not
How many doppler shifts occur during an exam? - ANS-2
How will a patient be positioned for a second trimester ultrasound? - ANS-lie on back
Making false, injurious statements about another person in writing is known as which of
the following? - ANS-libel
(Libel occurs when a person makes false or injurious statements about another in
writing. This is a form of character defamation. Sonographers and other healthcare
providers have a duty to avoid libel and other forms of defamation. )
Of the following, which is true about ultrasounds? - ANS-high frequency waves are used
PI is associated with which of the following? - ANS-Doppler
PI stands for pulsatility index. It is associated with Doppler. It is calculated by
(Maximum flow - Minimum flow) divided by the Mean Flow. The PI should be between 1
and 5. The higher the PI, the more likely the probability of technical errors is.
Symmetrical intrauterine growth restriction is most likely a result of - ANS-First trimester
insult
Symmetrical intrauterine growth restriction is generally a result of first trimester insult.
Asymmetrical intrauterine growth restriction may be the result of placental insufficiency,
chromosomal abnormality, uterine infection or maternal hypertension.
The amount of matter in a given space is known as which of the following? -
ANS-density
(Density is the volume of material in a given space. The denser a medium, the slower
sound moves through it. )
The body of the pancreas is related inferiorly to which of the following? - ANS-Jejunum
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