Question 1

Arrays are operated in two ways,called ___________ and ___________.

Accepted Answer

A)   linear; convex
B)   sequencing; phasing
C)   pulse wave; continuous wave
D)   spatial; angular

Question 2

Ceramics used as materials in the production of modern ultrasound transducer elements are naturally piezoelectric.

Accepted Answer

A) True 
 B)False

Question 3

Multi-Hertz transducers are driven at only one selectable frequency.

Accepted Answer

A) True 
 B)False

Question 4

Even unfocused transducers have a natural focus.

Accepted Answer

A) True 
 B)False

Question 5

Shortening the pulses in diagnostic ultrasound broadens the ______________.

Accepted Answer

A)   bandwidth
B)   duty factor
C)   pulse duration
D)   lateral resolution

Question 6

Wide bandwidth allows harmonic imaging.

Accepted Answer

A) True 
 B)False

Question 7

Another name for the Fresnel zone is ________________.

Accepted Answer

A)   near zone
B)   far zone
C)   field length
D)   near path length

Question 8

The three aspects to imaging resolution are contrast,temporal,and ________ resolution.

Accepted Answer

A)   depth
B)   angular
C)   detail
D)   spatial

Question 9

The thicker the section thickness,the less its negative impact on sonographic images.

Accepted Answer

A) True 
 B)False

Question 10

Partial-volume artifact is also called ____________.

Accepted Answer

A)   section thickness artifact
B)   side lobe artifact
C)   refraction artifact
D)   grating lobe artifact

Question 11

Intensity is uniform throughout the beam.

Accepted Answer

A) True 
 B)False

Question 12

The near-zone length decreases with an increase in frequency.

Accepted Answer

A) True 
 B)False

Question 13

The transducer element converts _________ to _______ and vice versa.

Accepted Answer

A)   voltage; electricity
B)   pulses; ultrasound
C)   ultrasound; voltage
D)   electricity; ultrasound

Question 14

Sequenced,phased,and vector are types of ________.

Accepted Answer

A)   transducers
B)   operations
C)   focusing
D)   construction

Question 15

The linear image consists of _______ scan lines.

Accepted Answer

A)   vertical
B)   oblique
C)   horizontal
D)   perpendicular

Question 16

Various formulations of lead zirconate titanate are commonly used in modern day transducers.

Accepted Answer

A) True 
 B)False

Question 17

Which of the following is achieved within the Fresnel zone?

Accepted Answer

A)   Focusing of the sound beam.
B)   Divergence of the sound beam.
C)   Increasing of the beam width.
D)   Uniform intensity of the sound beam.

Question 18

Contrast and temporal resolution relate more directly to the transducer.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following is attached to the rear face of the transducer element?

Accepted Answer

A)   Damping.
B)   Ceramics.
C)   Matching layer.
D)   Coupling media.

Question 20

Increasing the transducer frequency decreases the ________.

Accepted Answer

A)   frame rate
B)   detail resolution
C)   propagation speed
D)   maximum imaging depth

Exam 3: Transducers

Arrays are operated in two ways,called ___________ and ___________.

Correct AnswerverifiedShow Answer

Another name for the Fresnel zone is ________________.

Correct AnswerverifiedShow Answer

Increasing the transducer frequency decreases the ________.

Correct AnswerverifiedShow Answer

The linear image consists of _______ scan lines.

Correct AnswerverifiedShow Answer

Various formulations of lead zirconate titanate are commonly used in modern day transducers.

Correct AnswerverifiedShow Answer

Contrast and temporal resolution relate more directly to the transducer.

Correct AnswerverifiedShow Answer

Sequenced,phased,and vector are types of ________.

Correct AnswerverifiedShow Answer

Wide bandwidth allows harmonic imaging.

Correct AnswerverifiedShow Answer

Which of the following is attached to the rear face of the transducer element?

Correct AnswerverifiedShow Answer

The three aspects to imaging resolution are contrast,temporal,and ________ resolution.

Correct AnswerverifiedShow Answer

The near-zone length decreases with an increase in frequency.

Correct AnswerverifiedShow Answer

The transducer element converts _________ to _______ and vice versa.

Correct AnswerverifiedShow Answer

Intensity is uniform throughout the beam.

Correct AnswerverifiedShow Answer

Shortening the pulses in diagnostic ultrasound broadens the ______________.

Correct AnswerverifiedShow Answer

Even unfocused transducers have a natural focus.

Correct AnswerverifiedShow Answer

Which of the following is achieved within the Fresnel zone?

Correct AnswerverifiedShow Answer

Partial-volume artifact is also called ____________.

Correct AnswerverifiedShow Answer

Ceramics used as materials in the production of modern ultrasound transducer elements are naturally piezoelectric.

Correct AnswerverifiedShow Answer

Multi-Hertz transducers are driven at only one selectable frequency.

Correct AnswerverifiedShow Answer

The thicker the section thickness,the less its negative impact on sonographic images.

Correct AnswerverifiedShow Answer

Arrays are operated in two ways,called _ and _.

Correct Answer
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The transducer element converts ___ to _ and vice versa.

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