#1
What is the principle behind ultrasound imaging?
Sound waves reflection
ExplanationUltrasound imaging relies on the reflection of sound waves.
#2
Which property of ultrasound waves determines the resolution of an ultrasound image?
Frequency
ExplanationResolution is determined by the frequency of ultrasound waves.
#3
Which imaging modality utilizes ultrasound waves to produce real-time moving images of internal structures?
Ultrasound
ExplanationUltrasound produces real-time moving images of internal structures.
#4
What is the term for the ability of ultrasound waves to penetrate through tissues?
Penetration
ExplanationThe ability of ultrasound waves to penetrate tissues is termed penetration.
#5
What is the term for the ability of ultrasound waves to bounce off boundaries and return as echoes?
Reflection
ExplanationThe ability of ultrasound waves to bounce off and return as echoes is termed reflection.
#6
What is the unit of measurement for ultrasound frequency?
Hertz
ExplanationUltrasound frequency is measured in Hertz.
#7
How does increasing the frequency of ultrasound waves affect image resolution?
Increases resolution
ExplanationIncreasing frequency enhances image resolution.
#8
Which component of the ultrasound transducer converts electrical energy into mechanical energy?
Piezoelectric crystal
ExplanationPiezoelectric crystals convert electrical energy to mechanical energy.
#9
What is the term used to describe the depth at which ultrasound waves can no longer be detected?
Penetration
ExplanationPenetration depth is the depth where ultrasound waves can't be detected.
#10
What is the term used to describe the strength of the returning ultrasound signal?
Intensity
ExplanationThe strength of the returning ultrasound signal is termed intensity.
#11
What is the term used to describe the ability of an ultrasound system to distinguish between two objects that are close together?
Resolution
ExplanationResolution refers to the ability to distinguish close objects.
#12
Which of the following factors affects the attenuation of ultrasound waves?
Frequency
ExplanationUltrasound wave attenuation is influenced by frequency.
#13
Which imaging technique allows real-time visualization of blood flow within the body?
Doppler imaging
ExplanationDoppler imaging enables real-time blood flow visualization.
#14
Which factor primarily determines the resolution in the azimuthal plane of an ultrasound image?
Wavelength
ExplanationResolution in the azimuthal plane is mainly determined by wavelength.