Physics Test 2
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ACR (American college of radiology) | show 🗑
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show | How many times a year does the ACR accredit the labs?
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True (helpful by heating muscles) | show 🗑
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Grayscale, scattering, and attenuation (but test objects do not) | show 🗑
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show | True or false, test objects test the beam profile
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show | True or false, sonographers can use phantoms
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Graphite filled aqueous gel or urethane rubber materials which are closest to soft tissue attenuation and propagation speed | show 🗑
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show | What is the propagation speed in gels?
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show | What can TE phantoms evaluate?
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testing of detail and contrast resolutions, penetration (depth), dynamic range, and TGC operation | show 🗑
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show | True or false, test objects stimulate tissue characteristics
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show | What does doppler test object tests?
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gas bubbles | show 🗑
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show | What measures output?
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show | What are hydrophones made out of?
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Anything that deals with pulse; PRP, PRF, PD, duty factor, amplitude, & intensity | show 🗑
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show | What does the calorimeter measure?
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Automated probe tester | show 🗑
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show | The science of identifying and measuring the characteristics of an ultrasound beam that are relevant to bioeffects
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"cause and effect" | show 🗑
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"exposure and response" | show 🗑
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show | What does ALARA stand for
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show | What do they test cavitation on
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In vivo | show 🗑
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In virto | show 🗑
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focused | show 🗑
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1W/cm2 | show 🗑
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100 mW/cm2 (.1 watt) | show 🗑
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show | (MI) No bioeffects with peak rare fractional pressures below ________
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show | What is attenuation primarily due to
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show | Temperature rises are significant if they exceed _____ degrees C
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show | What part of the body has highest absorption coefficient
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Cavitation | show 🗑
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show | What type of cavitation describes bubbles that oscillate in diameter
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Transient | show 🗑
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MI (mechanical index) | show 🗑
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show | When does cavitation occur
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FDA | show 🗑
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show | Who makes the statements about prudent use of diagnostic ultrasound that benefits outweighs the risk, if any, to be present
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show | Ultrasound should only be used when there is a clinical benefit, true or false?
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show | A branch of medicine that uses population studies
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Spectral doppler are the highest, then M mode and color doppler, and grayscale outputs are the lowest | show 🗑
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Created by:
khuffman1103
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