EDELMAN SPI EXAM WITH QUESTIONS AND
WELL VERIFIED ANSWERS|| GUARANTEED
PASS || ALREADY GRADED A+ || LATEST
UPDATE 2025
What is the "talking" portion of pulsed sound? - ANSWER-the transmit of the
pulse
What is the "listening" portion of pulsed sound? - ANSWER-the receiving
portion of the pulse
What is pulse duration? - ANSWER-the actual time from the start of a pulse to
the end of that pulse
What is the unit for pulse duration? - ANSWER-microseconds
What is pulsed duration determined by? - ANSWER-sound source
Is pulse duration adjustable by the sonographer? - ANSWER-No
What is the relationship between frequency and pulse duration? - ANSWER-
inversely related
How can you calculate the pulse duration? - ANSWER-# of cycles x period
,so how many cycles multiplied by how fast it takes for each cycle to complete
Pulse duration is ____________ related to the number of cycles in the pulse. -
ANSWER-directly
Pulse duration is __________ related to period. - ANSWER-directly
In clinical imaging, how many cycles are typically in one pulse? - ANSWER-2-
4
Under which circumstance is cavitation most likely to occur? - ANSWER-Low
frequency and high signal amplitude
Where does coded excitation originate? - ANSWER-In the pulser
What are typical clinical doppler frequencies? - ANSWER-1-10,000Hz
What doppler angle is most inaccurate? <3 - ANSWER-60-75 degrees
What can be changed that would not cause any change in a hard copy image
output? - ANSWER-Display brightness and contrast
A quality assurance program: - ANSWER-Is needed by all labs
What is the actual time that an US machine is creating a pulse? - ANSWER-
Pulse duration
The angle of incidence of an US beam is perpendicular to an interface. The two
media have the same propagation speeds. What process cannot occur? -
ANSWER-Refraction
,What component of the US unit contains the memory bank? - ANSWER-Scan
converter
An US wave travels through two media and has attenuation of 3dB in the first
and 5dB in the second. What is the total attenuation? - ANSWER-8dB
According to the AIUM statement on bioeffects, there have een no confirmed
bioeffects below the intensities of __________ watts per square centimeter
SPTA. - ANSWER-0.1
Fill-in of an anechoic structure such as a cyst is known as? - ANSWER-Partial
volume artifact, slice thickness artifact, section thickness artifact
What is the range of frequencies created by medical diagnostic doppler
transducers? - ANSWER-2-10MHz
Doppler shifts are always created when the source and receiver are in motion
relative to each other (TRUE OR FALSE) - ANSWER-False
What is the significance of gray scale variation in the spectrum of a pulsed wave
doppler display? - ANSWER-It represents the number of red blood cells
creating the reflection
Which set of property of a test phantom is most relevant when assessing depth
calibration accuracy? - ANSWER-Reflector spacing and propagation speed
The relative output of an US instrument is calibrated in dB and the operator by
60 dB. The beam intensity is increased by? - ANSWER-One million times
What is the most typical doppler shift measured clinically? - ANSWER-2kHz
, Doppler shifts always occur if the source and receiver are in motion relative to
each other (TRUE OR FALSE) - ANSWER-False
Doppler shifts always occur if the source and observer are in motion relative to
each other and the angle between the motion and the sound beam is 90degrees
(TRUE OR FALSE) - ANSWER-False
Doppler shifts always occur if the source and observer are in motion relative to
each other and the angle between the motion and the sound beam is not
90degrees (TRUE OR FALSE) - ANSWER-True
When the sound source and the receiver are not moving directly towards or
away from each other, the _________ of the angle between them enters into the
calculation of doppler shift - ANSWER-Cosine
The range equation related distance from the reflector to ________ and
________. - ANSWER-Time-of-flight, propagation speed
In soft tissue: Distance traveled = ___________ x round trip time - ANSWER-
Propagation Speed
When does pre-processing occur? - ANSWER-When the patient is scanned
Post processing occurs when the image is? - ANSWER-Entered the A/D
converter but before display
The region from the transducer to the minimum beam cross-sectional area is
the? - ANSWER-Fresnel zone
Biologic effects have not been documented below what intensity (SPTA)? -
ANSWER-100 mW/cm2
WELL VERIFIED ANSWERS|| GUARANTEED
PASS || ALREADY GRADED A+ || LATEST
UPDATE 2025
What is the "talking" portion of pulsed sound? - ANSWER-the transmit of the
pulse
What is the "listening" portion of pulsed sound? - ANSWER-the receiving
portion of the pulse
What is pulse duration? - ANSWER-the actual time from the start of a pulse to
the end of that pulse
What is the unit for pulse duration? - ANSWER-microseconds
What is pulsed duration determined by? - ANSWER-sound source
Is pulse duration adjustable by the sonographer? - ANSWER-No
What is the relationship between frequency and pulse duration? - ANSWER-
inversely related
How can you calculate the pulse duration? - ANSWER-# of cycles x period
,so how many cycles multiplied by how fast it takes for each cycle to complete
Pulse duration is ____________ related to the number of cycles in the pulse. -
ANSWER-directly
Pulse duration is __________ related to period. - ANSWER-directly
In clinical imaging, how many cycles are typically in one pulse? - ANSWER-2-
4
Under which circumstance is cavitation most likely to occur? - ANSWER-Low
frequency and high signal amplitude
Where does coded excitation originate? - ANSWER-In the pulser
What are typical clinical doppler frequencies? - ANSWER-1-10,000Hz
What doppler angle is most inaccurate? <3 - ANSWER-60-75 degrees
What can be changed that would not cause any change in a hard copy image
output? - ANSWER-Display brightness and contrast
A quality assurance program: - ANSWER-Is needed by all labs
What is the actual time that an US machine is creating a pulse? - ANSWER-
Pulse duration
The angle of incidence of an US beam is perpendicular to an interface. The two
media have the same propagation speeds. What process cannot occur? -
ANSWER-Refraction
,What component of the US unit contains the memory bank? - ANSWER-Scan
converter
An US wave travels through two media and has attenuation of 3dB in the first
and 5dB in the second. What is the total attenuation? - ANSWER-8dB
According to the AIUM statement on bioeffects, there have een no confirmed
bioeffects below the intensities of __________ watts per square centimeter
SPTA. - ANSWER-0.1
Fill-in of an anechoic structure such as a cyst is known as? - ANSWER-Partial
volume artifact, slice thickness artifact, section thickness artifact
What is the range of frequencies created by medical diagnostic doppler
transducers? - ANSWER-2-10MHz
Doppler shifts are always created when the source and receiver are in motion
relative to each other (TRUE OR FALSE) - ANSWER-False
What is the significance of gray scale variation in the spectrum of a pulsed wave
doppler display? - ANSWER-It represents the number of red blood cells
creating the reflection
Which set of property of a test phantom is most relevant when assessing depth
calibration accuracy? - ANSWER-Reflector spacing and propagation speed
The relative output of an US instrument is calibrated in dB and the operator by
60 dB. The beam intensity is increased by? - ANSWER-One million times
What is the most typical doppler shift measured clinically? - ANSWER-2kHz
, Doppler shifts always occur if the source and receiver are in motion relative to
each other (TRUE OR FALSE) - ANSWER-False
Doppler shifts always occur if the source and observer are in motion relative to
each other and the angle between the motion and the sound beam is 90degrees
(TRUE OR FALSE) - ANSWER-False
Doppler shifts always occur if the source and observer are in motion relative to
each other and the angle between the motion and the sound beam is not
90degrees (TRUE OR FALSE) - ANSWER-True
When the sound source and the receiver are not moving directly towards or
away from each other, the _________ of the angle between them enters into the
calculation of doppler shift - ANSWER-Cosine
The range equation related distance from the reflector to ________ and
________. - ANSWER-Time-of-flight, propagation speed
In soft tissue: Distance traveled = ___________ x round trip time - ANSWER-
Propagation Speed
When does pre-processing occur? - ANSWER-When the patient is scanned
Post processing occurs when the image is? - ANSWER-Entered the A/D
converter but before display
The region from the transducer to the minimum beam cross-sectional area is
the? - ANSWER-Fresnel zone
Biologic effects have not been documented below what intensity (SPTA)? -
ANSWER-100 mW/cm2
