Ch. 11 Display Modes

Question 1

What are the three basic modes of display or formats of viewing ultrasound:

Answer 1

1. Amplitude mode
2. Brightness mode
3. Motion mode

Question 2

_________ mode aka ___________________ mode appears as a series of upward spikes

Answer 2

A-mode aka Amplitude mode appears as a series of upward spikes

Question 3

On A-mode or Amplitude mode the x-axis represents ________________ and the y-axis represents ______________________

Answer 3

On A-mode or Amplitude mode the x-axis represents depth and the y-axis represents amplitude

Question 4

______ mode aka as ____________________ mode appears as a line of dots of varying brightness, the brightness of the dot indicates the strength of the reflection

Answer 4

B-mode aka as Brightness mode appears as a line of dots of varying brightness, the brightness of the dot indicates the strength of the reflection

Question 5

The x-axis of B-mode represents ____________ and the y-axis represents _____________ and the z-axis represents ___________________

Answer 5

The x-axis of B-mode represents depth and the y-axis represents nothing and the z-axis represents amplitude

Question 6

_______ mode or ________________ mode appears as a group of horizontal wavy lines. Various squiggly lines that represent the changing of depth of the reflecting surfaces are produced on the screen.

Answer 6

M-mode or Motion mode appears as a group of horizontal wavy lines. Various squiggly lines that represent the changing of depth of the reflecting surfaces are produced on the screen.

Question 7

The x-axis on M-mode display represents ______________, and the y-axis represents ___________

Answer 7

The x-axis on M-mode display represents time and the y-axis represents depth

Question 8

What is the only display mode that provides information regarding reflector motion with respect to time?

Answer 8

M-mode

Question 9

With A-mode, what is displayed on the x-axis?

Answer 9

Depth of the reflector

Question 10

With M-mode, what is displayed on the y-axis?

Answer 10

Depth of the reflector

Question 11

Which mode provides the foundation for real-time, gray scale anatomic imaging?

Answer 11

B-mode, or brightness mode

Question 12

With A-mode, what is displayed on the y-axis?

Answer 12

Amplitude of the reflected signal

Question 13

In M-mode, what is displayed on the x-axis?

Answer 13

time

Question 14

With B-mode, which axis is related to the strength of the reflection?

Answer 14

The z-axis is related to reflection strength.

Question 15

Which imaging modality places time-of-flight information on the x-axis and echo amplitude on the y-axis?
A. M-mode
B. L-mode
C. J-mode
D. A-mode

Answer 15

D. A-mode, or Amplitude mode, displays reflector depth on the x-axis. Reflector depth is determined by a pulse’s time of flight. The strength of the reflection is displayed on the y-axis.

Question 16

Which imaging mode accurately displays reflector depth?
A. I-mode
B. L-mode
C. C-mode
D. A-mode

Answer 16

D. A-mode, or amplitude mode, displays the reflector depth accurately. A-mode is used in ophthalmology, which requires precise measures of depth or thickness

Question 17

Which imaging technique usually displays a single jagged line of varying heights?
A. A-mode
B. B-mode
C. C-mode
D. I-mode

Answer 17

A. A-mode displays reflected echoes as spikes of varying height. Echo amplitude appears on the y-axis, and reflector depth on the x-axis. The spike’s location on the x-axis is based on the pulse’s time-of-flight. The height of the peak is determined by the reflection’s strength. Stronger reflections create higher spikes.

Question 18

With B-mode, on which axis is the strength of the reflection input?
A. x-axis
B. y-axis
C. z-axis

Answer 18

C. With B-mode, reflection strength is input into the z-axis

Question 19

Which imaging modality places dots of dissimilar gray scale on the display?
A. A-mode
B. I-mode
C. B-mode
D. M-mode

Answer 19

C. Brightness mode, or B-mode, displays reflected echoes as spots of varying brightness. The depth of the dot is based on the time-of-flight. Stronger reflections create brighter dots. Weaker reflections create darker dots.

Question 20

The mode that produces lines related to the changing position of reflectors in the body with respect to time is called _______.
A. A-mode
B. M-mode
C. B-mode
D. a la mode

Answer 20

B. The imaging mode that displays the position of reflectors throughout time is M-mode, or motion mode. M-mode is the only display that provides reflector position throughout time.

Question 21

To which of the following do the x-axis of a B-mode, the y-axis of an M-mode and the x-axis of an A-mode all relate?
A. depth of view
B. go time
C. echo amplitude
D. time of flight

Answer 21

D. All three of these measurements report the reflector depth. Reflector depth is determined by a pulse’s time of flight.