Edelmen's SPI Exam Review questions and answers 2026 update

Edelmen's SPI Exam Review questions and
answers 2026 update
Sound waves are:
h, h,




a) electric
b) mechanical, transverse h,




c) spectral
d) longitudinal, mechanical - answer D h, h, h, h ,




The speed of sound of ultrasound in soft tissue is closest to:
h, h, h, h, h, h, h, h, h, h, h,




a) 1,540 km/sech,




b) 1.54 km/sec
h,




c) 1,500 m/s h,




d) 1,540 mm/sec - answer
h, h, h, h , C


Which is not an acoustic variable?
h, h, h, h, h,




a) density
b) pressure
c) distance
d) intensity - answer h, h, h , D


The effects of soft tissue on ultrasound are called:
h, h, h, h, h, h, h, h,




a) acoustic proliferation properties
h, h,




b) dynamic effects h,




c) acoustic propagation properties
h, h,

,d) biological effects - answer C h, h, h, h ,




All of the following are true EXCEPT:
h, h, h, h, h, h,




a) two waves with identical frequencies must interfere constructively.
h, h, h, h, h, h, h,




b) constructive interference is associated with waves that are in-phase.
h, h, h, h, h, h, h, h,




c) out-of-phase waves interfere destructively. h, h, h,




d) waves of different frequencies may exhibit both constructive and
h, h, h, h, h, h, h, h,


destructive interference at different times. - answer A
h, h, h, h, h, h, h, h,




Put in decreasing order:
h, h, h,




a) deca
b) deci
c) micro
d) centi - answer h, h, h , abdc


is the time to complete one cycle
h, h, h, h, h, h,




a) pulse duration h,




b) pulse period h,




c) period
d) duration period - answer C h, h, h, h ,




Which of the following sound waves is ultrasonic and least useful in diagnostic
h, h, h, h, h, h, h, h, h, h, h, h,


imaging?
h,




a) 30 KHz h,




b) 8 Mhz h,

,c) 8,000 Hz h,




d) 3,000 Hz h,




e) 15 Hz - answer
h, h, h, h , A


is the distance covered by one cycle.
h, h, h, h, h, h,




a) pulse length h,




b) wavelength
c) cycle distance h,




d) cycle duration - answer B
h, h, h, h ,




Which of the following is determined by the source and the medium?
h, h, h, h, h, h, h, h, h, h, h,




a) frequency
b) period
c) propagation speed h,




d) range resolution - answer D
h, h, h, h ,




Propagation speed = h, h, h, x wavelength
h,




a) pulse duration h,




b) period
c) # of cycles in the pulse
h, h, h, h, h,




d) frequency - answer h, h, h , D


As a result of
h, h, h, h, the propagation speed increases.
h, h, h,




a) increasing stiffness and increasing density h, h, h, h,

, b) increasing stiffness and increasing elasticity h, h, h, h,




c) decreasing compressibility and decreasing density h, h, h, h,




d) decreasing stiffness and decreasing density. - answer C
h, h, h, h, h, h, h ,




Put in decreasing order of propagation speed.
h, h, h, h, h, h,




a) gas
b) liquid
c) solid - answer h, h, h , cba h, h,




If the frequency of an ultrasound wave is doubled, what happens to the
h, h, h, h, h, h, h, h, h, h, h, h,


period?
h,




a) doubles
b) halved
c) remains the same h, h,




d) 4x greater - answer
h, h, h, h , B


The units of pulse repetition frequency are:
h, h, h, h, h, h,




a) per minute h,




b) microseconds
c) mm/microseconds
d) MHz - answer h, h, h , A


The time from the beginning of the pulse to the end of that pulse is
h, h, h, h, h, h, h, h, h, h, h, h, h, h, h, ?
a) period
b) pulse duration h,