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Ardms Spi Test Exam Questions With Complete Solutions

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Ardms Spi Test Exam Questions With Complete Solutions What is the vertical axis of the graph called? - ANSWER- Y-axis What is the name of the horizontal axis of a graph? - ANSWER- X-axis What is the reciprocal of 1,000? - ANSWER- 0.001 What is the metric system order from highest to low...

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  • August 12, 2024
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Ardms Spi Test Exam Questions With
Complete Solutions
What is the vertical axis of the graph called? - ANSWER- Y-axis

What is the name of the horizontal axis of a graph? - ANSWER- X-axis

What is the reciprocal of 1,000? - ANSWER- 0.001

What is the metric system order from highest to lowest? - ANSWER-
Giga,mega,kilo,hector,deca,deci,centi,milli,micro,nano

What are the prefixes in order? - ANSWER- M,k,da,d,Mega,kilo, deca,deci,centi

What is the reciprocal of Mega? - ANSWER- Micro

what is the term used to describe the effects of an ultrasound wave on living tissue? -
ANSWER- Bioeffects

as sound travels through a medium, what term describes the effects of the medium on
the sound wave? - ANSWER- Acoustic propagation properties

sound can be characterized as? - ANSWER- Cyclical oscillations in certain variables

the direction of motion of a particle is perpendicular to the direction of propagation of the
wave. What type of wave is this? - ANSWER- Transverse wave

a particle within a transverse wave is traveling vertically. What is the direction of the
waves propagation? - ANSWER- Horizontal

what describes the characteristics of a sound wave? - ANSWER- Mechanical,
longitudinal

sound is best described as? - ANSWER- A series of compressions and refractions

sound waves are ______ waves - ANSWER- longitudinal

what are acoustics varibles? - ANSWER- Pressure, motion of particles in the wave,
density

what are the units of pressure measurement of an acoustic wave? - ANSWER-
Atmospheres-atm, pascals-pa, millimeters of mercury-mmhg, pounds/sq in (all are
appropriate but pa are most often used

, pressure is defined as an amount of ____ divided by the ___ - ANSWER- force,area

period is described in units of ____ - ANSWER- time

waves that exist at the same location and time will combine together. This is called? -
ANSWER- Interference

two waves arrive at the same location and interfere. The resultant sound wave is
smaller. What is this called? - ANSWER- Destructive interference

a pair of waves are in phase. What occurs when these waves interfere? - ANSWER-
Constructive interference

what is the reciprocal of period? - ANSWER- Frequency

the range of periods commonly found in waves produced by ultrasound systems is? -
ANSWER- 0.1-0.5 microseconds

what happens to period as is propagates? - ANSWER- Remains the same

the sonographer ____ have the ability to alter the period of an ultrasound wave by a
basic transducer? - ANSWER- Does not

what determines the period of an ultrasound wave? - ANSWER- The sound source

what term describes the number of cycles that an acoustic variable completes in one
second? - ANSWER- Frequency

in imaging, the frequency of the wave remains ___ as it propagates through the body -
ANSWER- constant

what is the range of frequencies emitted by transducers used in ultrasonic imaging? -
ANSWER- 2,000,000 to 10,000,000 Hz or 2-10 megahertz

ultrasound is defined as a sound with a frequency of ___ - ANSWER- greater than 0.02
MHz or 20,000 Hz

Which of the following waves is ultrasonic and least useful? - ANSWER- 24 kHz

When a number is squared it is multiplied by? - ANSWER- Itself

What diagnostic imaging the sonoghrapher ___ the ability the vary the amplitude -
ANSWER- has

The amplitude is changed by the _____ - ANSWER- output power

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