Level 1 Video Lecture: Ultrasound Physics

In this second video lecture designed to support individuals working towards the British Society of Echocardiography's level 1 accreditation I consider some of the basic principles behind the generation of ultrsound images. The lecture covers how ultrasound is generated, how returning signal allows us to build up visual representations of the patient's anatomy, some basic tips on how to 'optimise' the image that is generated and why artefacts occur.
Contents
00:00 - Intro
00:45 - The piezoelectric effect: generating ultrasound
03:03 - Propagation velocity
03:30 - Frequency
04:58 - Ultrasound inside the body
08:28 - The returning wave
09:52 - Building a 2D image
11:23 - Comprimises in image generation
12:33 - Image optimisation: sector size
14:20 - Image optimisation: line density
15:00 - Image optimisation: ultrasound frequency
15:34 - Image optimisation: focusing
18:47 - Image optimisation: gain
19:44 - Image optimisation: time gain compensation
20:50 - Image optimisation: summary
22:07 - Artefacts
27:43 - Motion Mode (M-Mode)
29:07 - Summary of key learning points

[@OmarAladdin]

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[@sandranajibelozanomurillo6201]

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[@mirageleung1575]

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[@ashutoshmeena6139]

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[@peterashford5123]

Thank you very much.

[@richardfisher9916]

You're welcome Peter.

[@khaledazab]

I passed here. Thank you.

[@richardfisher9916]

Dear Khaled, this is a great comment to wake up to. Glad these videos helped. May I ask which examination you were sitting?

[@aha1627]

so long