Ultrasound Artifacts | Ultrasound Physics Course | Radiology Physics Course #25
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- čas přidán 30. 06. 2024
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Artifacts occur due to false assumptions the transducer makes when receiving ultrasound echoes. In this video we will review the refraction artifact (including edge shadowing), reverberation artifact, mirroring, comet tail and ring down artifacts, speed artifacts, acoustic shadowing and acoustic enhancement as well as range ambiguity.
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If you're here, you're likely studying for a radiology physics exam. I've spent the last few months collating past papers from multiple different countries selecting the most commonly asked questions. You'll be surprised how often questions repeat themselves!
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Thank you all for watching. At 3:04 I misspoke 😖 The diagrams here are correct. What I meant to say was, if speed of sound increases in the second medium the angle of transmission will be more than the angle of incidence. And visa versa. Apologies for that!
If at all confused I explain it correctly in talk #7 of this series (refraction) 🙂
Thank You sir❤❤❤❤
😂😂😂😂… I had to go back to your video on refraction to digest this “new” concept… I wish I had seen your apology before 😂😂😂😂😂
Fantastic work!
Simple, Informative and Brilliant. Hats-off. Thank you so much.
Wow, thank you. I appreciate it!
great videos, thanks for them!
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Thank you Atiqullah. Appreciate you taking the time to write such a lovely comment. Warm regards from South Africa 🇿🇦
Awesome videos! I think you may be misspeaking during the refraction explanation. Your explanations about the sound waves slowing down or speeding up seem to be backwards relative to the diagrams (c2>c1; c1>c2)
I am studying for my veterinary radiology preliminary board exam and these videos have been immensely helpful. Thank you for taking the time to make them!
You're welcome! Hope the exam goes well. Veterinary radiologists are the best!
Me too!!!
thanks bhai, iqra manzoor ki smjh nahi ati. ab mast kam krte ho mqsood bhai
Thank you so so much！hope I get my license next January
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Lifetime access! All future updates etc will be available too. Thanks for your support Hashem
How do you explain pseudotumor and pseudocyst?
But the enhancement artefact can also be due to "falsely" applied Time Gain Compensation no?
Thank you for the great video.
I just have a question regarding Snell's law.
You mentioned in the video that "if the speed of sound increases, we will get an angle of transmittance that is smaller than the angle of incidence"
but the diagram seems to show otherwise.
I've gone through the calculation via the formula and I think if the speed of sound increase in the 2nd medium, the angle should also increase.
Pls let me know if there's a mistake in my understanding. Thank you
Hello. Not sure I did say that. If I did, do you mind letting me know when in the video so I can highlight the mistake for others? You’re right angle of transmission is higher than incidence of speed increases.
@@radiologytutorials it's around 03:00 to 03:20
@@kazuya9696thank you so much! I will pin a comment to the top to let people know. The diagrams are correct! I misspoke 😖😖
Dr Michael,
I am a dedicated fan of your Radiology Tutorials on CZcams and greatly appreciate the quality of your content.
I am writing to seek your permission and guidance regarding a project I have in mind. I would like to translate and dub your ULTRASOUND PHYSICS series videos into Chinese. To make your invaluable educational content more accessible to Chinese-speaking students on Bilibili, a popular video-sharing platform in China. By providing Chinese voiceovers, I aim to bridge the language gap and facilitate their understanding of the complex concepts you explain so effectively.
Please rest assured that I will respect your intellectual property rights and adhere to the following guidelines:
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Your guidance and approval are of utmost importance to me. If you have any concerns, suggestions, or specific instructions, I am more than willing to accommodate them. I eagerly await your response and look forward to the opportunity to share your exceptional work with a wider audience.
Hi Caleb. Sorry for the delay. Keen to chat with you on Zoom. Will send you an email now. Let’s chat 🙂
Brilliant, just Brilliant
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