What happens to an acoustic beam’s intensity when the power in the beam increases by 25% while the cross-sectional area of the beam remains the same?

What determines the period of an ultrasound wave?

When a sonographer increases the maximum imaging depth during an exam, what happens to the frequency?

The wavelength of a cycle of a cycle in an ultrasound wave can be reported with which units?

True or false? The sonographer has the ability to alter the period of an ultrasound wave that is produced by a basic transducer

What is the characteristic of acoustic waves with frequencies exceeding 20,000 Hz when compared with waves having frequencies of less than 20,000 Hz?

True or false? With diagnostic ultrasonic imaging instruments, the operator can alter the intensity of an ultrasound beam produced by the transducer.

The letters below represent the abbreviations for the prefixes of the metric system. Select the sequence that appears in decreasing order

What happens when the power in an ultrasound beam is unchanged, and at the same time, the beam are doubles?

Ultrasound is defined as a sound with a frequency of ___

Sound is best described as__?

True or false ? If the period of two waves are the same, then the frequencies of the waves must also be the same

The volume of a cystic structure is estimated from sonographic data. Which of the following is an acceptable measurement of the volume?

With standard ultrasonic imaging, what happens to the period of a wave as it propagates?

What determines the intensity of an ultrasound beam after it has traveled through the body?

____ is the reciprocal of period

Select the sequence that appears in increasing order

The amplitude of an acoustic wave decreases from 27 pascals to 9 pascals. If the initial power in the wave was 27 watts, what is the wave’s final power?

A sonographer adjusts the output power of the wave emitted by the transducer. Which of the following also changes?

What term is used to describe the effects of an ultrasound wave on living tissues

Sound can be characterized as:

What are the units associated with the circumference of a circle?

All of the following are true about sound waves except?

True or false ? The period of an ultrasound wave is related to the frequency and is the same, regardless of whether the wave is pulsed or continuous

What is the name of the horizontal axis of a graph?

How many nanoseconds are in 7 seconds?

A particle within a transverse wave is traveling vertically, what is the direction of the waves propagation?

As sound travels in the body, what typically happens to the intensity of the wave?

Which term is the reciprocal of mega

What is the wavelenght of 2 MHz sound in soft tissue?

The intensity of an ultrasound beam is defined as the ___ in a beam ___ by the ___ of the beam.

The power of an ultrasound wave can be reported with which of the following units?

What is characteristic of acoustic waves with frequencies of less than 20 Hz when compared with waves having frequencies of more than 20 Hz?

What is th range of periods commonly found in waves produced by ultrasound systems?

Which of following is not a measure of area?

Which of the following terms best describes the relationship between frequency and wavelength for sound traveling in soft tissue?

A pair of waves are in phase. What occurs when these waves interfere?

What determines the initial amplitude of an ultrasound wave?

A sonographer measures the perimeter of an anatomical structure. Which of the following choices is a reasonable value of the measurement?

What is the vertical axis of a graph called?

Which of the following describes the characteristics of a sound wave?

What is the range of frequencies emitted by transducers used in ultrasound imaging

A sack contains 6 pounds of flour. The contents of the bag are increased by a factor of 5. How much flour is in the bag?

If the power of the beam is tripled while the cross-sectional area of the beam remains the same, the intensity___.

True or false? With standard ultrasound pulses, the frequency of the ultrasound changes significantly as the wave propagates through the body ?

When the power in an acoustic beam is doubled and the cross-sectional area of the beam is halved, then the intensity of the beam is:

A force is applied to a surface. If the force is tripled and the surface area over which the force is applied is also tripled, what is the new pressure?

What are the units of the transmitted intensity of a sound sound wave?

Which pulse has a lower propagation speed?

A bouquet has 30 flowers. The size of the bouquet is decreased by a factor of 3. How many flowers remain?

Waves that exist at the same location and time will combine, what is this called?

Which of the following cannot be considered a unit of frequency?

What term describes the number of cycles that an acoustic variable completes in a second?

As sound travels through a medium, what term describes the effects of the medium on the sound wave

The frequency of a continuous acoustic wave is 5 MHz . The wave is then pulsed with a duty factor of 0.1 what is the new frequency?

Which sound wave has a longer period?

Infrasound is defined as a sound with a frequency of ___.

A longitudinal wave propagates from eats to west at a speed of 2 miles per hour, what is the direction of motion of the particles within the wave?

True or false? A sonographer can routinely change the power of a wave emitted by a transducer used in diagnostic ultrasound imaging

How much bigger is one billion than one thousand?

Which of th following is true of all waves?

How can the volume of an irregular shaped object be measured most accurately?

True or false ? Waves in the ultrasound range behave in the same general manner as sound waves that are audible?

Mathematically, when a number is squared, the number is multiplied by :

What happens to the intensity of an ultrasound beam when the beam’s cross-sectional area remains unchanged while the amplitude of the wave triples?

What is the reciprocal of 5?

How are scores on the ultrasound board exams related to study time?

Which pulse has a longer wavelength?

The final amplitude of an acoustic wave is reduced to one half of its original value. The final power is___ the original power.

Typically, as an ultrasound wave travels through soft tissue, the power of the wave:

What is the reciprocal of 1,000?

The direction of motion of a particle in a wave is perpendicular to the direction of propagation of the wave. What type of wave is this?

What are the units of intensity?

How is weight related to a sonographers time spent exercising?

How are calorie intake and weight related?

What establishes the frequency of an ultrasound wave?

Two waves arrive at the same location and interfere. The resultant sound wave is smaller than either of the two original. What is this called?

True or false? With standard diagnostic imaging instrumentation, the sonographer has the ability to vary the amplitude of a sound wave produced by the transducer

What is the reciprocal of 1/10?

As an ultrasound wave travels through the body, its amplitude usually:

The speed of red blood cells traveling through a blood vessel is 750 cm/sec. You are asked to measure the speed in miles per hour. What information would be sufficient for you to complete your task?

What determines the initial intensity of an ultrasound beam?