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TEST BANK Textbook of Diagnostic Sonography 9th edition by Hagen-Ansert A+
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TEST BANK Textbook of Diagnostic Sonography 9th edition by Hagen-Ansert A+
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Test Bank - for Textbook of Diagnostic Sonography, 9th Edition by Sandra L. Hagen-Ansert, All Chapters 1-29 | Complete Guide A+
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Created By: Test BankTEST BANK Textbook of Diagnostic Sonography 9/E
Hagen-Ansert A+
Chapter 01: Foundations of Clinical Sonography
MULTIPLE CHOICES
1. Historically, the development of ultrasound began shortly after:
a. radio communication in World War I.
b. sonar in World War II.
c. nuclear testing in World War II.
d. the launching of Sputnik.
ANS: B
World War II brought sonar equipment to the forefront for defense purposes. Ultrasound was
influenced by the success of sonar equipment.
PTS: 1
OBJ: Detail a timeline for pioneers in the advancement of medical diagnostic ultrasound. TOP:
Historical overview of sound theory and medical ultrasound
2. The early applications of obstetric ultrasound were initiated by:
a. Joseph Holmes and Douglas Howry.
b. Ian Donald and Tom Brown.
c. Hellmuth Hertz and Inge Edler.
d. William Fry and Russell Meyers.
ANS: B
The early obstetric compound scanner was built by Tom Brown and Dr. Ian Donald in Scotland
in 1957.
PTS: 1
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,Created By: Test Bank
OBJ: Detail a timeline for pioneers in the advancement of medical diagnostic ultrasound. TOP:
Historical overview of sound theory and medical ultrasound
3. Visualization of the cardiac structures in the heart was discovered by:
a. Joseph Holmes.
b. Ian Donald.
c. Hertz and Edler.
d. George Ludwig.
ANS: C
In 1954, echocardiographic techniques were developed in Sweden by Drs. C.H. Hertz and I.
Edler.
PTS: 1
OBJ: Detail a timeline for pioneers in the advancement of medical diagnostic ultrasound. TOP:
Historical overview of sound theory and medical ultrasound
4. Which one of the following statements about the role of sonographers is false?
a. Sonographers perform ultrasound studies and gather diagnostic data independent of the
physician.
b. Sonographers must possess intellectual curiosity and perseverance.
c. Sonographers must have a technical aptitude.
d. Sonographers must be able to communicate on different levels.
ANS: A
A sonographer performs ultrasound studies gathering diagnostic data under both the direct and
the indirect supervision of a physician. They also must assess clinical history and symptoms,
interpret laboratory values, and understand other diagnostic examinations.
PTS: 1 OBJ: Describe the role of the sonographer. TOP: Role of the sonographer
5. In soft tissues, the assumed propagation velocity is (in meters per second):
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,Created By: Test Bank
a. 1320.
b. 1450.
c. 1540.
d. 1650.
ANS: C
In soft tissues, the assumed propagation velocity (speed) is 1540 meters per second.
PTS: 1
OBJ: Demonstrate an understanding of the basic principles and terminology of ultrasound. TOP:
Introduction to basic ultrasound principles – Acoustics
6. Diagnostic ultrasound uses the frequencies of:
a. 10 to 15 kHz.
b. 1 to 20 kHz.
c. 100 to 1000 Hz.
d. 1 to 20 MHz.
ANS: D
Diagnostic application of ultrasound uses frequencies of 1 to 20 million cycles per second (1 to
20 MHz).
PTS: 1
OBJ: Demonstrate an understanding of the basic principles and terminology of ultrasound. TOP:
Introduction to basic ultrasound principles – Acoustics
7. The device that converts energy from one form to another is called the:
a. digitizer.
b. transducer.
c. scan converter.
d. beam former.
ANS: B
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Piezoelectric elements (transducers) convert electric energy into ultrasound energy and vice
versa.
PTS: 1
OBJ: Demonstrate an understanding of the basic principles and terminology of ultrasound. TOP:
Transducer Selection in a Clinical Imaging Practice
8. The angle of reflection is equal to the:
a. acoustic impedance.
b. angle of incidence.
c. refraction.
d. image resolution.
ANS: B
Angle of reflection is the angle between the reflected sound direction and a line perpendicular to
the media boundary.
PTS: 1
OBJ: Demonstrate an understanding of the basic principles and terminology of ultrasound. TOP:
Propagation of sound through tissue
9. The display mode that shows time along the horizontal axis and depth along the vertical
axis is:
a. A mode.
b. B mode.
c. M-mode.
d. real-time.
ANS: C
Motion mode (M-mode) displays the depth along the vertical axis versus the time along the
horizontal axis.
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