Deck 1: Introduction

Question 1

The location of each dot corresponds to the ________ of the echo to return.

A) strength
B) time
C) pulse
D) frequency

Answer 1

B
The location of each dot corresponds to the anatomic location of the echo-generating structure.

Question 2

Sonography is medical anatomic imaging using a ________ technique.

A) starting point
B) pulse echo
C) vertical parallel
D) transducer instrument

Answer 2

B
Anatomic imaging with ultrasound is accomplished by the pulse-echo principle.

Question 3

The brightness of the dot corresponds to the ________ of the returning echo.

A) location
B) speed
C) strength
D) angle

Answer 3

C
The brightness of the dot corresponds to the echo strength,producing what then is known as a gray-scale image.

Question 4

Animals have applied ultrasound to detect and capture prey.

Question 5

A ________ scan is shaped like a slice of pie.

A) sector
B) convex
C) linear
D) curvilinear

Question 6

Vertical parallel scan lines are seen with which transducer format?

A) vector.
B) convex.
C) linear.
D) curvilinear.

Question 7

Sonographic images are composed of many ________.

A) crystals
B) scan lines
C) focal points
D) frequency shifts

Question 8

The Doppler effect is a change in echo ________.

A) frequency
B) strength
C) amplitude
D) direction

Question 9

Doppler ultrasound measures the movement of ________.

A) tissue
B) blood
C) A and B
D) none of the above

Question 10

Three-dimensional imaging requires many adjacent tissue ________ to build the image.

A) moving objects
B) frequency shifts
C) cross-sections
D) ultrasound pulses

Question 11

Color Doppler imaging is superimposed on a gray-scale image.

Question 12

A gray-scale ultrasound image is the visible counterpart of a/an ________.

A) frequency shift
B) spectral display
C) invisible object
D) electronic wave

Question 13

One pulse of ultrasound generates a single scan line as it travels through tissue.

Question 14

A rectangular image display is seen when using a ________ transducer.

A) sector
B) vector
C) convex
D) linear

Question 15

Diagnostic ultrasound transducers generate a ________ of sound into the body.

A) wave
B) pulse
C) frequency
D) Doppler

Question 16

Echoes produced by ________ objects have different ________ than the pulses sent into the body.

A) stationary; frequencies
B) stable; directions
C) moving; frequencies
D) moving; echoes

Question 17

Pulsed ultrasound transducers can generate only ultrasound pulses.

Question 18

The Doppler effect is caused by a difference in the depth of two moving objects.

Question 19

Quantitative data are determined by which Doppler display?

A) Color imaging.
B) Power imaging.
C) B-mode (gray-scale, or brightness) imaging.
D) Spectral imaging.

Question 20

The method by which each pulse originates from the same starting point is called a ________ image.

A) sector
B) linear
C) convex
D) none of the above