Structures that are appear black while structures that are appear white.
Put these items in order of what ultrasound travels the fastest to slowest (1 is fastest). . Bone . Air . Liquids
frequencies are needed to image deep structures. frequencies limit image depth.
❌ frequencies produce better image quality.
Echo brightness is known as .
Peripheral nerves have a pattern.
Label the appearance of vessels with ultrasound.
Arteries are ❌, ❌, and ❌.
Veins on an ultrasound are: ❌, ❌, and ❌.
Ultrasound appearance:
❌ - linear white structure, dark shadow underneath • ❌ - dark, unless there is a highly reflective structure such as a tumor • ❌ - highly reflective, appears lighter • Pleura - light with darker cavities • ❌ - hyperechoic, appears light, • insertion angle and needle size impact
An ultrasound machine is calibrated to display a returning echo that moves the same wavelength as (1540 m/s). Therefore, artifact will result from returning echoes of bone and gas.
is when a nerve may change in appearance from hypo echoic to hyper echoic as the transducer angle is changed.
is the ability of a material to generate an electrical potential following the application of mechanical stress.
Label the following transducer anatomy.
Color doppler is angle-dependent. Red flows ❌ the transducer and blue flows ❌ from the transducer.
Central venous access is most often performed in the ❌ plane.
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