SPI A
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| According to ALARA which parameter should be minimized? | show 🗑
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| What does a hydrophone measrure? | show 🗑
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| If an echo is recieved 25 microseconds after transmission, wha is the depth of the structure? | show 🗑
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| Besides a sound wave striking a boundary between two tissue interfaces at oblique incidence, which other condition must be present for refraction to occur? | show 🗑
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| show | refraction, enhancement, shadowing, reverberation
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| show | cell size, impedance, depth, velocity
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| Which transducer array configuration results in a small footprint that is electronically steered and focused? | show 🗑
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| What is increased if pulse duration is decreased? | show 🗑
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| In an unfocused transucer, what is the region between the transducer face and the point where the beam diverges? | show 🗑
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| show | beam width, pulse length, propagation speed, acoustic impedance
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| What is decreased with the nuber of acoustic lines per frame is increased without changing the max depth? | show 🗑
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| Which artifact is indicated by the arrows? pic | show 🗑
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| What does read zoom do? | show 🗑
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| What does frequency compounding improve? | show 🗑
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| What may cause point reflections to appear as horizontal lines rather than dots on the B-mode image? | show 🗑
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| show | adjust strength of transmitted soundpulse, adjust amplification of receive voltage, changes dynamic range, adjust ampliturde with depth
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| What is round trip time in soft tissue for an echo from a reflection depth of 1 cm? | show 🗑
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| What is the effect on PRP if PRF is doubled? | show 🗑
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| show | lateral resolution, signal-to-noise ratio, frame rate, dynamic range
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| An increased in which parameter will improve accuracy of velocity measurement with autocorrelation? | show 🗑
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| show | adjust sweep speed, adjust baseline, increase dynamic range, increased transmitted frequency
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| show | a,b,c,d
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| If the Doppler shift frequency is 1KHz when a vessel is 2 cm depth, what is the frequency shift at 4cm? | show 🗑
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| What does the color image flow demonstrate? pic | show 🗑
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| Which signals are eleminated by wall filter in spectral Doppler display? | show 🗑
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| Which parameter would change on the phantom test if the SPL were made longer? | show 🗑
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| show | a,b,c,d
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| show | TGC not set properly, system ??, focus control malformation, transducer damged
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Created by:
CJcards