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DMSO 1110 Quiz #1 Answer Key
Answer key for DMSO 1110 Intro to Sono Quiz #1.
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Quiz #1 Answer sheet1.How is the term Sonography different than the definition of ultrasound?
a.Sonography is described as the use of high-frequency sound waves to form images that are produced by a sonographer using a transducer.
2.What is the minimum educational requirement for a credentialed sonographer?
a.An associate's degree in applied science in sonography from a CAHEEP-
accredited program.
3.Which of the following answers is NOT correct?
a.Ultrasound uses contrast and radiation.
4.What are the benefits of sonography when compared to CT or MRI? a.It is dynamic, operator dependent, and portable.
5.Sound waves travel slower in less dense tissue structures because __________. a.The molecules of the medium are farther apart from each other.
6.Which of the below is TRUE regarding the acoustic parameters of ultrasound?
a.Frequency and wavelength are inversely proportional to each other.
7.Which of the below is NOT a function of a Diagnostic Medical Sonographer?
a.Discuss in detail the exam results with the patient.
8.What term best describes the part of a sound wave in which the molecules are pushed closer together?
a.Compression.
9.Which of the below is NOT a specialty in sonography?
a.Dermatology.
10.What best describes the piezoelectric effect produced by an ultrasound transducer?
a.An electrical pulse is applied to each of the elements and they expand and contract to produce mechanical energy.
11.What transducer is the best choice for imaging a superficial structure like a breast or a scrotum?
a.A linear array transducer.
12.A higher frequency transducer emits _______, wavelengths and has ______ ability to penetrate deeper into tissue.
a.shorter, decreased
13.What is the frequency range of transducers used in medicine?
a.2-20 MHz
14.Amplification of the returning echoes changes the brightness of the ultrasound image and can be manipulated by the operator by the ______ control.
a.Gain. 15.Ultrasound intensity is measured in ______.
a.Decibels.
16.What produces the echo that is returned to the transducer?
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