6. Imaging Anatomy, Motion & Flow

Question 1

The underlying principle upon which conventional (Principle 1) sonography operates is

a. the Doppler principle
b. the compressional wave principal
c. the virtual beam principle
d. the pulse-echo principle

Answer 1

d. the pulse-echo principle

Question 2

The underlying principle upon which more recent, sophisticated (Principle 2) sonography operates is

a. the Doppler principle
b. the compressional wave principle
c. the virtual beam principle
d. the pulse-echo principle

Answer 2

c. the virtual beam principle

Question 3

Which is not needed with Principle 2 sonography?

a. transmitted beam
b. multiple-transmit focus
c. reception focus
d. TGC

Answer 3

b. multiple-transmit focus

Question 4

Which is not a reason for improvement of detail resolution with Principle 2 sonography?

a. shorter transmit pulses
b. reception focus at each pixel location
c. massive postprocessing with GPU(s)
d. retrospective beam forming

Answer 4

a. shorter transmit pulses

Question 5

Which is not a reason for improvement of temporal resolution with Principle 2 sonography?

a. shorter transmit pulses
b. fewer transmit pulses
c. no multiple focusing
d. speed of GPU(s)

Answer 5

a. shorter transmit pulses

Question 6

Which is not significantly improved with Principle 2 sonography?

a. axial resolution
b. lateral resolution
c. temporal resolution
d. contrast resolution

Answer 6

a. axial resolution

Question 7

Physical beam forming applies to ______ sonography.

a. Principle 1
b. Principle 2
c. both principles
d. neither principles

Answer 7

c. both principles

Question 8

Virtual beam forming applies to

a. Principle 1
b. Principle 2
c. both principles
d. neither principles

Answer 8

b. Principle 2

Question 9

Multiple transmission focus control applies to

a. Principle 1
b. Principle 2
c. both Principle 1 and Principle 2
d. neither Principle 1 not Principle 2

Answer 9

a. Principle 1

Question 10

Retrospective beam forming applies to

a. principle 1
b. principle 2
c. both principles
d. neither principles

Answer 10

b. principle 2

Question 11

Improving detail resolution sacrifices temporal resolution is true for

a. Principle 1
b. Principle 2
c. both principles
d. neither principles

Answer 11

a. Principle 1

Question 12

Simultaneous gray-scale, color-Doppler, and spectral-Doppler applies to

a. Principle 1
b. Principle 2
c. both principles
d. neither principles

Answer 12

b. Principle 2

Question 13

Principle 1 yields higher frame rates than Principle 2. T or F?

Answer 13

False

Question 14

Shear wave elastography operates on Principle 1. T or F?

Answer 14

False

Question 15

Principle 2 enables the entire image to be in focus. T or F?

Answer 15

True

Question 16

Principle 2 yields improved penetration. T or F?

Answer 16

True

Question 17

Principle 2 yields improved penetration. T or F?

Answer 17

True

Question 18

Principle 2 does not impact Doppler operation. T or F?

Answer 18

False

Question 19

Principle 2 produces laser-thin ultrasound beams. T or F?

Answer 19

False

Question 20

Multiple transmit focuses degrade temporal resolution with

a. Principle 1
b. Principle 2
c. both principles
d. neither principles

Answer 20

a. Principle 1

Question 21

Reception focus principle applies to

a. Principle 1
b. Principle 2
c. both principles
d. neither principles

Answer 21

c. both principles