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Ultrasound Physics > Ch13 > Flashcards

Ch13 Flashcards

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1
Q

What is acceptable with poor temporal resolution?

A. Heart
B. Gallbladder
C. Aorta

A

B. Gallbladder

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2
Q

Temporal Resolution is determined by

A. Time frame
B. Imaging depth
C. Frame rate
D. Pulse per second

A

C. Frame rate

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3
Q

Multi focus improve which resolution

A. Temporal
B. Axial
C. Lateral
D. A&B

A

C. Lateral

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4
Q

Temporal Resolution pertains to

A. Accuracy in time
B. Accuracy in sound
C. Accuracy in movement
D. None above

A

A. Accuracy of time

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5
Q

Pulse per frame and frame rate are

A. Directly
B. Inversely
C. Unrelated

A

B. Inversely

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6
Q

Is higher frame rate with fewer pulse good for temporal resolution

A

Yes

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7
Q

Lower frame rates occur with

A. No pulse
B. More pulse
C. Some pulse
D. Less pulse

A

B. More pulse

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8
Q

Shallow imaging decrease frame rate and improves temporal resolution

True or false

A

False, shallow imaging increases frame rate

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9
Q

Imaging depth and frame rate are

A. Directly
B. Inversely
C. Unrelated

A

Inversely

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10
Q

What can a sonographer control setting wise name 3

A
  1. Speed of sound in the medium
  2. Imaging depth
  3. # of pules per picture
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11
Q

Time frame and frame rate are

A. Directly
B. Inversely
C. Unrelated
D. Inversely and recipoals

A

D. Inversely and recipoals

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12
Q

If the machine takes 1/17th of a second to make a frame; how many frames per second can it produce?

Hint: time rate×frame rate

A

Tf=17hz

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13
Q

What is frame rate measure in
A. MM
B. WATTS
C. Hz
D. MHz

A

C. Hz

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14
Q

What does not determine the # of pules per frame

A. # of images
B. Sector size
C. Line density
D. # of focal points

A

A. # of images

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15
Q

Frame rate and temporal resolution diminish with multi focus

True or false

A

True

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16
Q

Which field is not good for temporal resolution

A. Narrow
B. Wide
C. Short
D. Long

A

B. Wide

17
Q

What is sector size called

A. Field of depth
B. Field of view
C. Field of image

A

B. Field of view

18
Q

Field of view and frame rate are

A. Directly
B. Inversely
C. Unrelated

A

B. Inversely

19
Q

Altering the space between sound beams are called

A

Line density

20
Q

Line density and frame rate are

A. Directly
B. Inversely
C. Unrelated

A

A. Directly

21
Q

With high line density, each image contains more details with

A

Improved spatial resolution

22
Q

What would make a higher quality movie

A. Higher frame rate
B. Lower frame rate

A

A. Higher frame rate

23
Q

Which would take more time

A. Higher frame rate
B. Lower frame rate

A

B. Lower frame rate

Ultrasound Physics (3 decks)

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