# Comprehensive Spi Practice

14 Questions  Settings  The SPI exam is an interactive one in which contain 110 questions that are designed to test your readiness to use sonography and get the correct meaning from the reading. The quiz below is designed to test your understanding on sonographic principles and instrumentation. Take it up and get to be more prepared for the SPI exams. All the best!

• 1.
Sound waves are
• A.

Electric

• B.

Mechanical transverse

• C.

Spectral

• D.

Longitudinal mechanical

• 2.
• A.

1.540 km/sec

• B.

1.54 km/msec

• C.

1.500 m/s

• D.

1.540 mm/sec

• 3.
• A.

19.000 kHz

• B.

10.000 MHz

• C.

20.000 msec

• D.

15.000 Hz

• 4.
Which is not an acoustic variable?
• A.

Density

• B.

Pressure

• C.

Distance

• D.

Intensity

• 5.
The effects of soft tissue on US are called:
• A.

Acoustic proliferation properties

• B.

Dynamic effects

• C.

Acoustic propagation properties

• D.

Biologic effects

• 6.
• A.

Two waves with identical frequencies must interfere constructively

• B.

Constructive inferference is associated with waves that are in-phase

• C.

Out-of-phase waves inferfere destructively

• D.

Waves of different frequencies may exhibit both constructive and destructive interference at different times

• 7.
Put in decreasing order
• A.

Deca

• B.

Deci

• C.

Micro

• D.

Centi

• 8.
______ is the time to complete on cycle
• A.

Pulse duration

• B.

Pulse period

• C.

Period

• D.

Duration period

• 9.
Which of the following sound waves is ultrasonic and least useful in diagnostic imaging?
• A.

30 KHz

• B.

8 MHz

• C.

8.00 Hz

• D.

3.00 kHz

• E.

15 Hz

• 10.
• A.

10.00 Hz

• B.

1.00 kHz

• C.

1 kHz

• D.

1 MHz

• 11.
_____ is the distance covered by one cycle.
• A.

Pulse length

• B.

Wavelength

• C.

Cycle distance

• D.

Cycle duration

• 12.
Which of the following is determined by the source and the medium?
• A.

Frequency

• B.

Period

• C.

Propagation speed

• D.

Range resolution

• 13.
Propagation speed = _______ x wavelength
• A.

Pulse duration

• B.

Period

• C.

Number of cycles in the pulse

• D.

Frequency

• 14.
As a result  of _____ the propagation speed increases.
• A.

Increasing stiffness and increasing density

• B.

Increasing stiffness and increasing elasticity

• C.

Decreasing compressibility and decreasing density

• D.

Decreasing stiffness and decreasing density