ARDMS SPI EXAM LATEST 2024-2025
UPDATE COMPREHENSIVE QUESTIONS
AND CORRECT ANSWERS| ALREADY
GRADED A+/PASSED 100%
#3 - correct answerWhat number is period?
A 10 dB difference in signal intensity is equivalent to a _______ difference. - correct
answertenfold
A 2D image of internal body structures displayed as dots; the brightness of the dots is
proportional to the amplitude of the echo; the image is applicable to both real-time and
static scanners - correct answerB-mode
A 5 MHz transducer used in a pulse-echo system will generally produce - correct
answera wide band of frequencies centered at 5 MHz
A beam-intensity profile is often mapped with - correct answera hydrophone
A decreased pulse duration leads to - correct answerbetter axial resolution
A device used to focus sound beams - correct answeracoustic lens
A digital scan converter is essentially a - correct answercomputer memory
A disadvantage of pulsed-wave Doppler (PW) relative to continuous-wave Doppler
(CW) is that - correct answerit is subject to aliasing
A Doppler instrument that can distinguish between positive and negative shifts is called
- correct answerbidirectional
A Fourier transform of a returning echo will result in a presentation of the ____
contained within the echo - correct answerfrequencies
A graphic presentation of moving structures in a waveform; the display is presented as
a group of lines representing the motion of moving interfaces versus time - correct
answerM-mode
A graphic presentation with vertical spikes arising from a horizontal baseline; the height
of the vertical spikes represents the amplitude of the deflected echo - correct answerA-
mode
,A large amplitude pulse from the pulser results in - correct answera large amplitude
pulse from the transducer
A liquid placed between the transducer and the skin - correct answercoupling medium
A long near zone can be obtained by - correct answerusing a higher frequency
transducer
A material that changes its dimensions when an electric field is applied is called ____
material. - correct answerpiezoelectric
A method of analyzing a waveform - correct answerspectral analysis
A method of reducing pulse duration by electrical or mechanical means - correct
answerdamping
a process of acoustic energy absorption - correct answerrelaxation
A region that is anechoic is displayed as - correct answerecho-free
A region that is hyperechoic is - correct answerechogenic
A scan converter will accept echo signals from the receiver and store them in the
"memory" of the instrument. Identify the types of memory used in scan converters. -
correct answeranalog and digital
A shortened spatial pulse length results in - correct answerbetter axial resolution
a simulated cyst - correct answerWhat does the solid black arrow point to?
a simulated solid lesion - correct answerWhat does the curved open arrow point to?
A sonographic image can be transferred from one computer to another by way of -
correct answermodem
A structure that possesses echoes - correct answerechogenic
A tissue or structure that does not have internal echoes (echo-free) - correct
answersonolucent
a transducer with a large bandwidth is likely to have - correct answergood axial
resolution
A wave vibrating at 1 million cycles per second has a frequency of - correct answer1
MHz
,A wave vibration at 20 cycles per second has frequency of - correct answer20 Hz
A waveform transfers _____ from one point in space to another point in space. - correct
answerenergy
A-mode - correct answerWhat mode is displayed in this diagram?
Abbreviation for time gain compensation - correct answerTGC
According to Snell's law, the transmission angle is greater than the incidence angle if
the propagation speed
A. OF MEDIUM 2 > MEDIUM 1
B. OF MEDIUM 1 > MEDIUM 2
C. OF TWO MEDIA ARE EQUAL
D. IS CALCULATED 3 dB DOWN - correct answerof medium 2 > medium 1
According to the AIUM, no significant biologic effects have been proven in mammals
exposed to - correct answerSPTA intensities below 100 mW/cm²
According to the range equation, what two things are necessary to calculate the
distance to the reflector? - correct answerpropagation speed and pulse round-trip time
Acoustic enhancement can be observed when scanning - correct answerweakly
attenuating structures
Acoustic impedance formula - correct answerdensity × propagation speed
Acoustic impedance is defined by which of the following?
A. RAYONS
B. METERS/dB
C. mW/cm²
D. RAYLS - correct answerrayls
Acoustic impedance is not dependent on which of the following?
A. FREQUENCY
B. DENSITY
C. STIFFNESS
D. NONE OF ABOVE - correct answerfrequency
acoustic mirror - correct answer# 461
Acoustic power output is determined primarily by - correct answerthe pulser voltage
spike
acousto-optical converter - correct answerdevice that changes sound waves into visible
light patterns
, All of the following are also known as lateral resolution except?
A. AZIMUTHAL
B. TRANSVERSE
C. RANGE
D. ANGULAR - correct answerrange
Amplitude is measured in - correct answerdB
An 8-bit binary number is referred to as - correct answerbyte
An 8-bit word microcomputer with 128K words of memory can store how many bits of
data? - correct answer128 × 1024 × 8 = 1,048,576
An annular array real-time scanner is steered - correct answermechanically
An artifact that is produced from interaction of the incident beam with a curved surface
and results in an acoustic shadow is referred to as - correct answeredge artifact
An artifact that results from a pulse that has traveled two or more round-trip distances
between the transducer and the interface is called - correct answerreverberation
An artifact that results from refraction of the ultrasound beam at a muscle-fat interface
and give rise to double images is called - correct answersplit image artifact
An artifact that would least likely produce a pseudo-mass is - correct answercomet tail
artifact
An echo that does not correspond to the real echo information - correct answerartifact
An echo that has undergone an attenuation of 3 dB will have an intensity that is ___ its
initial intensity. - correct answer½
An electronic device that translates signals from digital into analog and analog into
digital - correct answermodem
An example of an acoustic window is - correct answerliver interface or cystic structure
an in vivo phenomenon characterized by erythrocytes within small vessels stopping the
flow and collecting in the low pressure regions of the standing wavefield - correct
answerreal cell stasis
An increase in echoes from a region distal to a weakly attenuating structure or tissue -
correct answerenhancement
UPDATE COMPREHENSIVE QUESTIONS
AND CORRECT ANSWERS| ALREADY
GRADED A+/PASSED 100%
#3 - correct answerWhat number is period?
A 10 dB difference in signal intensity is equivalent to a _______ difference. - correct
answertenfold
A 2D image of internal body structures displayed as dots; the brightness of the dots is
proportional to the amplitude of the echo; the image is applicable to both real-time and
static scanners - correct answerB-mode
A 5 MHz transducer used in a pulse-echo system will generally produce - correct
answera wide band of frequencies centered at 5 MHz
A beam-intensity profile is often mapped with - correct answera hydrophone
A decreased pulse duration leads to - correct answerbetter axial resolution
A device used to focus sound beams - correct answeracoustic lens
A digital scan converter is essentially a - correct answercomputer memory
A disadvantage of pulsed-wave Doppler (PW) relative to continuous-wave Doppler
(CW) is that - correct answerit is subject to aliasing
A Doppler instrument that can distinguish between positive and negative shifts is called
- correct answerbidirectional
A Fourier transform of a returning echo will result in a presentation of the ____
contained within the echo - correct answerfrequencies
A graphic presentation of moving structures in a waveform; the display is presented as
a group of lines representing the motion of moving interfaces versus time - correct
answerM-mode
A graphic presentation with vertical spikes arising from a horizontal baseline; the height
of the vertical spikes represents the amplitude of the deflected echo - correct answerA-
mode
,A large amplitude pulse from the pulser results in - correct answera large amplitude
pulse from the transducer
A liquid placed between the transducer and the skin - correct answercoupling medium
A long near zone can be obtained by - correct answerusing a higher frequency
transducer
A material that changes its dimensions when an electric field is applied is called ____
material. - correct answerpiezoelectric
A method of analyzing a waveform - correct answerspectral analysis
A method of reducing pulse duration by electrical or mechanical means - correct
answerdamping
a process of acoustic energy absorption - correct answerrelaxation
A region that is anechoic is displayed as - correct answerecho-free
A region that is hyperechoic is - correct answerechogenic
A scan converter will accept echo signals from the receiver and store them in the
"memory" of the instrument. Identify the types of memory used in scan converters. -
correct answeranalog and digital
A shortened spatial pulse length results in - correct answerbetter axial resolution
a simulated cyst - correct answerWhat does the solid black arrow point to?
a simulated solid lesion - correct answerWhat does the curved open arrow point to?
A sonographic image can be transferred from one computer to another by way of -
correct answermodem
A structure that possesses echoes - correct answerechogenic
A tissue or structure that does not have internal echoes (echo-free) - correct
answersonolucent
a transducer with a large bandwidth is likely to have - correct answergood axial
resolution
A wave vibrating at 1 million cycles per second has a frequency of - correct answer1
MHz
,A wave vibration at 20 cycles per second has frequency of - correct answer20 Hz
A waveform transfers _____ from one point in space to another point in space. - correct
answerenergy
A-mode - correct answerWhat mode is displayed in this diagram?
Abbreviation for time gain compensation - correct answerTGC
According to Snell's law, the transmission angle is greater than the incidence angle if
the propagation speed
A. OF MEDIUM 2 > MEDIUM 1
B. OF MEDIUM 1 > MEDIUM 2
C. OF TWO MEDIA ARE EQUAL
D. IS CALCULATED 3 dB DOWN - correct answerof medium 2 > medium 1
According to the AIUM, no significant biologic effects have been proven in mammals
exposed to - correct answerSPTA intensities below 100 mW/cm²
According to the range equation, what two things are necessary to calculate the
distance to the reflector? - correct answerpropagation speed and pulse round-trip time
Acoustic enhancement can be observed when scanning - correct answerweakly
attenuating structures
Acoustic impedance formula - correct answerdensity × propagation speed
Acoustic impedance is defined by which of the following?
A. RAYONS
B. METERS/dB
C. mW/cm²
D. RAYLS - correct answerrayls
Acoustic impedance is not dependent on which of the following?
A. FREQUENCY
B. DENSITY
C. STIFFNESS
D. NONE OF ABOVE - correct answerfrequency
acoustic mirror - correct answer# 461
Acoustic power output is determined primarily by - correct answerthe pulser voltage
spike
acousto-optical converter - correct answerdevice that changes sound waves into visible
light patterns
, All of the following are also known as lateral resolution except?
A. AZIMUTHAL
B. TRANSVERSE
C. RANGE
D. ANGULAR - correct answerrange
Amplitude is measured in - correct answerdB
An 8-bit binary number is referred to as - correct answerbyte
An 8-bit word microcomputer with 128K words of memory can store how many bits of
data? - correct answer128 × 1024 × 8 = 1,048,576
An annular array real-time scanner is steered - correct answermechanically
An artifact that is produced from interaction of the incident beam with a curved surface
and results in an acoustic shadow is referred to as - correct answeredge artifact
An artifact that results from a pulse that has traveled two or more round-trip distances
between the transducer and the interface is called - correct answerreverberation
An artifact that results from refraction of the ultrasound beam at a muscle-fat interface
and give rise to double images is called - correct answersplit image artifact
An artifact that would least likely produce a pseudo-mass is - correct answercomet tail
artifact
An echo that does not correspond to the real echo information - correct answerartifact
An echo that has undergone an attenuation of 3 dB will have an intensity that is ___ its
initial intensity. - correct answer½
An electronic device that translates signals from digital into analog and analog into
digital - correct answermodem
An example of an acoustic window is - correct answerliver interface or cystic structure
an in vivo phenomenon characterized by erythrocytes within small vessels stopping the
flow and collecting in the low pressure regions of the standing wavefield - correct
answerreal cell stasis
An increase in echoes from a region distal to a weakly attenuating structure or tissue -
correct answerenhancement
