# Physics-Display Modes and Two-Dimensional Imaging

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1. What is the only display mode that provides information regarding reflector motion with respect to time?
M-mode
2. With A-mode, waht does the x-axis display?
depth of the reflector
3. With M-mode, what does the y-axis display?
depth of the reflector
4. Which mode provides the foundation for real-time, grayscale anatomic imaging?
B-mode or brightness mode
5. With A-mode, what does the y-axis display?
amplitude of the reflected signal
6. In M-mode, what does the x-axis display?
time
7. With B-mode, which axis is related to the strength of the reflection?
the z-axis is reflated to reflection strength
8. True or False.
Mechanical scanning produces pictures that rae similar in shape to linear phased array images.
True
9. True or False.
Many active elements fire at almost the same time in a mechanical scanner.
• False
• there is only one active element in a mechanical scanner
10. True or False.
Many active elements fire at almost the same time in a phased array scanner.
True
11. Which of the following transducers is best described as mechanically steered and fixed, single focused?
A. annular phased array
B. mechanical
C. linear phased
D. annular array
B. mechanical
(this multiple choice question has been scrambled)
12. Which of the following is best described as mechanically steered and multi-focus?
A. annular phased array transducer
B. annular sequential array transducer
C. mechanical transducer
D. linear phased transducer
A. annular phased array transducer steer the sound beams mechanically and are multi-focused
(this multiple choice question has been scrambled)
13. Which of the following transducers creates a rectangular shaped image?
A. linear phased
B. mechanical
C. annular phased array
D. linear sequential array
D. linear sequential array
(this multiple choice question has been scrambled)
14. A linear phased array transducer has 128 crystals. How many of these crystals are fired to create a single sound beam?
A. 1
B. a small group
C. a large goup
D. 128
• D 128
• with linear phases array transducers, all of the active elements are fired to create each sound pulse
15. A linear sequential array transducer has 128 crystals. HOw many of these crystals are fired to create a single sound beam?
A. a large group
B. 1
C. a small group
D. 128
C. a small group
(this multiple choice question has been scrambled)
16. In a linear phased array, what is the firing pattern that steers a beam up or down?
electronic slope
17. In linear phased array, what is the firing pattern that focuses a sound beam?
electronic curvature
18. True or False.
There are large time delays in the firing pattern of a linear phased array transducer.
• False
• there are tiny time delays in the firing pattern of a linear phased array transducer.
19. True or False.
A machine that displays A-mode and two-dimensional images is called a duplex scanner.
• False.
• a machine that displays doppler and two-dimensional images is called a duplex scanner.
 Author: aprilh4485 ID: 116132 Card Set: Physics-Display Modes and Two-Dimensional Imaging Updated: 2011-11-11 22:29:44 Tags: Sonography Folders: Description: Display Modes and Two-Dimensional Imaging Show Answers: