Deck 1: Foundations of Clinical Sonography

Question 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.

Answer 1

B

Question 2

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.

Answer 2

A

Question 3

Which one of the following statements about the Doppler principle is false?

A) Doppler refers to a change in frequency in which the motion of laminar or turbulent flow is detected within a vascular structure.
B) The beam should be perpendicular to the flow.
C) The Doppler shift is directly proportional to the velocity of the red blood cell.
D) If the red blood cell moves away from the transducer, then the fall in frequency is directly proportional to the velocity and direction of the red blood cell movement

Answer 3

The beam should be perpendicular to the flow.

Question 4

The early applications of obstetric ultrasound were initiated by:

A) Joseph Holmes.
B) Ian Donald.
C) John Howry.
D) William Fry.

Question 5

Visualization of the cardiac structures in the heart was discovered by:

A) Joseph Holmes.
B) Ian Donald.
C) Hertz and Edler.
D) George Ludwig.

Question 6

The device that converts energy from one form to another is called the:

A) digitizer.
B) transducer.
C) scan converter.
D) beam former.

Question 7

The angle of reflection is equal to the:

A) acoustic impedance.
B) angle of incidence.
C) refraction.
D) image resolution.

Question 8

The higher the transducer frequency, the:

A) shorter the wavelength.
B) faster the frame rate.
C) deeper the penetration depth.
D) slower the frame rate.

Question 9

The Fresnel zone is also called the:

A) far field.
B) focal point.
C) near zone.
D) Nyquist limit.

Question 10

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.

Question 11

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.