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basic principles of echocardiography Questions with correct answers
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basic principles of echocardiography Questions with correct answers
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basic principles of echocardiography Questions withcorrect answers
sound is the result of what Correct Answer-mechanical energy traveling
through matter as a wave
how are sound waves transmitted Correct Answer-as a series of
alternating pressure waves with high pressure and low pressure pulses
compression Correct Answer-high pressure areas
- where the particles have been squeezed together
rarefraction Correct Answer-the low pressure areas
- where the particles have been spread apart
sound frequency of audible sound waves Correct Answer-20 Hz to
20000 Hz
sound frequency of ultrasound waves Correct Answer-20 KHz
sound frequency of medical imaging Correct Answer-2-20 MHz
ultrasound waves of echo Correct Answer-propagate through body
tissues (1540 m/s) and fluids producing compression and rarefaction of
conducting medium
, a zone of compression and an adjacent zone of rarefaction constitute one
cycle of an ultrasound wave or wavelength
principles of echo Correct Answer-wavelength: distance covered by one
cycle
frame rate = number of updated images/s
frequency: number of cycles per unit time
high frequency of ultrasound Correct Answer-high resolution
low penetration
low frequency of ultrasound Correct Answer-low resoluon
higher penetration
resolution types of echo Correct Answer-axial resolution
lateral resolution
contrast resolution
temporal resolution
instrumentation and equipment of ultrasound Correct Answer-cardiac vs.
abdominal
sector transducer
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