Edelman SPI Comprehensive Exam 2/Edelman
SPI Exam Predictor TEST BANK /Edelman
SPI Practice Exam With Complete Questions
And Correct Answers with Deatailed
Rationales Graded A+
which medium would propagate sound the fastest?
muscle
lung
blood
cranium
liver - Correct Answer :cranium because the stiffer the medium the faster the speed
Reflections off an irregular surface describe..
a- diffuse reflections
b- specular reflections - Correct Answer :a
diffuse=irregular specular=smooth
the pulse repitition frequency is the number of pulses transmitted each second and is adjustable by the
sonographer by changing the...
a- spatial intensities
b- angle of incidence
c- duty factor
d- depth - Correct Answer :d
which field of imaging is best for harmonic imaging?
near, mid, or far - Correct Answer :mid field
A+ TEST BANK 1
, Edelman SPI Comprehensive Exam
the signal strength of a reflected signal is determined by all of the following except...
a- surface characteristics
b- gray scale map selected
c- reflector size
d- tissue stiffness
e- initial signal strength - Correct Answer :b
which type of reflection permits visualization of tissue parenchyma and other structures that may not be
perpendicular to the incident beam?
a- specular reflection
b- scattering
c- refraction
d- compounding - Correct Answer :b
assuming the propagation speed is constant, which ultrasound frequency would correspond to the
longest period?
a- 2.0 MHz
b- 5.0 MHz
c- 7.5 MHz
d- 10.0 MHz - Correct Answer :a because long period = low freq
they are inversely related
which is the most dominant factor affecting attenuation?
a- absorption
b- reflection
c- scattering
d- they are all equal - Correct Answer :a. absorption- energy to heat
the component of the ultrasound system that drives the transducer is called...
A+ TEST BANK 2
, Edelman SPI Comprehensive Exam
a- power supply
b- pulser
c- reciever
d- scan converter - Correct Answer :b. the pulser drives the electrical signal to the transducer
true or false? harmonic imaging increases penetration - Correct Answer :false
the distance closest to the transducer in which imaging cannot be performed is the...
a- near field
b- registration zone
c- dead zone
d- sensitivity zone - Correct Answer :c
the units for measuring q factor is...
a- mm
b- percentage
c- dB
d- unitless - Correct Answer :d
which of the following most determines a transducers resonant frequency?
a- bandwith
b- crystal thickness
c- damping material
d- matching layer - Correct Answer :b. crystal thickness determines frequency THICKNESS OF THE
ELEMENT
the greatest risk from heat or thermal effects on tissue depends mostly on...
a- SPTP
A+ TEST BANK 3
, Edelman SPI Comprehensive Exam
b- SATA
c- SATP
d- none of these - Correct Answer :a
the system parameters that should be monitored as part of a quality control process for maintaining the
integrity of the ultrasound equipment include...
a- accuracy of depth and distance measurements
b- contrast resolution
c- detail resolution
d- penetration and dynamic range
e- tgc operation
f- all of the above - Correct Answer :f
if cavitation is occurring and bubbles are not bursting, what type is this?
transient, stable, or uniform? - Correct Answer :stable
thermal indices predict the worst temperature rise (Celsius) based on the machine settings, and must be
kept less than....
5, 7, or 2? - Correct Answer :2
False negative- lab test that is negative for disease and the gold standard is positive for disease.
true or false? - Correct Answer :true- gold standard is correct and lab test is wrong
the AIUM and ACR recommend for accreditation purposes that system sensitivity and penetration, image
uniformity, and electrical and mechanical safety inspection should be inspected or tested...
a- monthly
b- quarterly
c- semi annually
d- none of the above - Correct Answer :c
A+ TEST BANK 4