Question 1

The ratio of the largest to the smallest amplitude that a system can handle is called ________.

Accepted Answer

A)  compression 
B)  dynamic range 
C)  demodulation 
D)  signal processing 
A)  compression 
B)  dynamic range 
C)  demodulation 
D)  signal processing

Question 2

The ultrasound instrument is composed of a beam former,a signal processor,an image processor,and a transducer.

Accepted Answer

A) True 
 B)False

Question 3

Temporal resolution in M (motion) and A (amplitude) modes is equal to the pulse repetition period (PRP).

Accepted Answer

A) True 
 B)False

Question 4

Contrast resolution depends on ________ of bits per pixel.

Accepted Answer

A)  size 
B)  number 
C)  strength 
D)  configuration 
A)  size 
B)  number 
C)  strength 
D)  configuration

Question 5

An analog-to-digital converter is also called a ________.

Accepted Answer

A)  summer 
B)  digitizer 
C)  compression 
D)  signal processor 
A)  summer 
B)  digitizer 
C)  compression 
D)  signal processor

Question 6

Utilizing additional focal points causes the temporal resolution to __________.

Accepted Answer

A)  double 
B)  improve 
C)  degrade 
D)  remain unchanged 
A)  double 
B)  improve 
C)  degrade 
D)  remain unchanged

Question 7

Time gain compensation amplifiers compensate for _______ decibels of attenuation.

Accepted Answer

A)  30 
B)  50 
C)  60 
D)  120 
A)  30 
B)  50 
C)  60 
D)  120

Question 8

The ________ direct(s) the driving voltages from the pulser to the transducer during transmission and directs returning echo voltages to amplifiers during reception.

Accepted Answer

A)  transmit/receive (T/R) switch 
B)  channels 
C)  beam former 
D)  signal processor 
A)  transmit/receive (T/R) switch 
B)  channels 
C)  beam former 
D)  signal processor

Question 9

Parallel processing is a process technique that increases:

Accepted Answer

A)  detail resolution. 
B)  frame rates. 
C)  penetration depth. 
D)  contrast resolution. 
A)  detail resolution. 
B)  frame rates. 
C)  penetration depth. 
D)  contrast resolution.

Question 10

A flat panel display presents image information in the form of ________.

Accepted Answer

A)  vertical lines read out from left to right 
B)  horizontal lines read out from left to right 
C)  vertical lines read out from right to left 
D)  horizontal lines read out from right to left 
A)  vertical lines read out from left to right 
B)  horizontal lines read out from left to right 
C)  vertical lines read out from right to left 
D)  horizontal lines read out from right to left

Question 11

Which imaging technique is most likely to visualize a structure beneath a calcification?

Accepted Answer

A)  Harmonic imaging. 
B)  Pixel interpolation. 
C)  Panoramic imaging. 
D)  Spatial compounding. 
A)  Harmonic imaging. 
B)  Pixel interpolation. 
C)  Panoramic imaging. 
D)  Spatial compounding.

Question 12

Each independent delay and element combination constitutes a transmission channel.

Accepted Answer

A) True 
 B)False

Question 13

The ________ is the number of sonographic images entered into memory per second.

Accepted Answer

A)  cine loop 
B)  frame rate 
C)  image refresh rate 
D)  pulse repetition frequency 
A)  cine loop 
B)  frame rate 
C)  image refresh rate 
D)  pulse repetition frequency

Question 14

A two-dimensional image plane is usually divided like a checkerboard in a ________ or similar matrix.

Accepted Answer

A)  1540 × 7700 
B)  256 × 525 
C)  1024 × 786 
D)  265 × 521 
A)  1540 × 7700 
B)  256 × 525 
C)  1024 × 786 
D)  265 × 521

Question 15

Elastography is an ultrasound imaging mode that depicts tissue ________.

Accepted Answer

A)  density 
B)  stiffness 
C)  temperature 
D)  propagation speed 
A)  density 
B)  stiffness 
C)  temperature 
D)  propagation speed

Question 16

How many bits does it take to make a byte?

Accepted Answer

A)  4 
B)  8 
C)  10 
D)  15 
A)  4 
B)  8 
C)  10 
D)  15

Question 17

The pulse repetition frequency (PRF) in real time imaging typically ranges from ________.

Accepted Answer

A)  2-20 MHz 
B)  4-15 kHz 
C)  5-50 kHz 
D)  2-15 MHz 
A)  2-20 MHz 
B)  4-15 kHz 
C)  5-50 kHz 
D)  2-15 MHz

Question 18

The display form that presents the depth in the vertical axis and the amplitude of the echo in the horizontal axis is ________.

Accepted Answer

A)  A (amplitude)-mode 
B)  B (brightness)-mode 
C)  C (color)-mode 
D)  M (motion)-mode 
A)  A (amplitude)-mode 
B)  B (brightness)-mode 
C)  C (color)-mode 
D)  M (motion)-mode

Question 19

The maximum frame rate permitted for a 15 cm penetration depth,three focuses,and 200 scan lines per frame is ________.

Accepted Answer

A)  8.0 
B)  8.5 
C)  2.5 
D)  7.0 
A)  8.0 
B)  8.5 
C)  2.5 
D)  7.0

Question 20

The primary beam is much narrower,improving lateral resolution with ________.

Accepted Answer

A)  harmonic imaging 
B)  pixel interpolation 
C)  real-time imaging 
D)  spatial compounding 
A)  harmonic imaging 
B)  pixel interpolation 
C)  real-time imaging 
D)  spatial compounding

The ratio of the largest to the smallest amplitude that a system can handle is called ________.

The ultrasound instrument is composed of a beam former,a signal processor,an image processor,and a transducer.

Temporal resolution in M (motion) and A (amplitude) modes is equal to the pulse repetition period (PRP).

Contrast resolution depends on ________ of bits per pixel.

An analog-to-digital converter is also called a ________.

Utilizing additional focal points causes the temporal resolution to __________.

Time gain compensation amplifiers compensate for _______ decibels of attenuation.

The ________ direct(s) the driving voltages from the pulser to the transducer during transmission and directs returning echo voltages to amplifiers during reception.

Parallel processing is a process technique that increases:

A flat panel display presents image information in the form of ________.

Which imaging technique is most likely to visualize a structure beneath a calcification?

Each independent delay and element combination constitutes a transmission channel.

The ________ is the number of sonographic images entered into memory per second.

A two-dimensional image plane is usually divided like a checkerboard in a ________ or similar matrix.

Elastography is an ultrasound imaging mode that depicts tissue ________.

How many bits does it take to make a byte?

The pulse repetition frequency (PRF) in real time imaging typically ranges from ________.

The display form that presents the depth in the vertical axis and the amplitude of the echo in the horizontal axis is ________.

The maximum frame rate permitted for a 15 cm penetration depth,three focuses,and 200 scan lines per frame is ________.

The primary beam is much narrower,improving lateral resolution with ________.

Introduction

Ultrasound

Transducers

Doppler Principles

Artifacts

Performance and Safety

Filters

Exam 4: Instruments

The ratio of the largest to the smallest amplitude that a system can handle is called ________.

The ultrasound instrument is composed of a beam former,a signal processor,an image processor,and a transducer.

Temporal resolution in M (motion) and A (amplitude) modes is equal to the pulse repetition period (PRP).

Contrast resolution depends on ________ of bits per pixel.

An analog-to-digital converter is also called a ________.

Utilizing additional focal points causes the temporal resolution to __________.

Time gain compensation amplifiers compensate for _______ decibels of attenuation.

The ________ direct(s) the driving voltages from the pulser to the transducer during transmission and directs returning echo voltages to amplifiers during reception.

Parallel processing is a process technique that increases:

A flat panel display presents image information in the form of ________.

Which imaging technique is most likely to visualize a structure beneath a calcification?

Each independent delay and element combination constitutes a transmission channel.

The ________ is the number of sonographic images entered into memory per second.

A two-dimensional image plane is usually divided like a checkerboard in a ________ or similar matrix.

Elastography is an ultrasound imaging mode that depicts tissue ________.

How many bits does it take to make a byte?

The pulse repetition frequency (PRF) in real time imaging typically ranges from ________.

The display form that presents the depth in the vertical axis and the amplitude of the echo in the horizontal axis is ________.

The maximum frame rate permitted for a 15 cm penetration depth,three focuses,and 200 scan lines per frame is ________.

The primary beam is much narrower,improving lateral resolution with ________.

Introduction

Ultrasound

Transducers

Doppler Principles

Artifacts

Performance and Safety

Filters