Atlas of Ultrasound-Guided Regional Anesthesia

Approach and Techniques

Offline Markings Offline techniques involve external skin markings from ultrasound scans without imaging during needle placement. Changes in patient position, mobility of the skin, and dynamic changes with needle placement and injection limit the utility of this approach, but this…

Needle Imaging

Needle tip visibility is critical to the success and safety of regional block interventions. It is imperative to identify the needle tip before advancing the needle. The cut on the bevel is the best identifier of the needle tip for…

Transducer Manipulation

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Ultrasound Transducers

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Doppler Imaging

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Spatial Compound Imaging

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Anisotropy

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Beam Width (Slice Thickness)

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Reflection

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Attenuation

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