Speed of sound in tissue, at 2:24 in the video, is not around 1040 m/s. It's in the range of 1450 to 1580 m/s depending on the tissue type. Ultrasound machine default speed assumed for soft tissue is 1540 m/s because it's a weighted average of what's most likely to be encountered in a scanning session.
Thank you, you are right, not sure how that made it through editing. thank you for catching it; I have added a note to the comments section for the correction.
This is an amazing video. Just quick fire, well explained most relevant information. Helped me so much to compensate for the horrible lecture I got. Somehow my professor spent 4 hours explaining mostly the same things and I didn't understand a thing.
I am a physician ready to get started in point of care ultrasonography,. What a great review of the fundamentals! This really made my studying make much more sense. Your diagrams and animation are incredibly informative Thank you!
Also be careful with BART for Doppler colors. The speed colorbar shown on US displays will tell you unambiguously if the flow is towards or away from the transducer by looking at the color AND the corresponding positive or negative sign for the speed value. Don't just assume BART gives the proper interpretation.
Machines are calibrated at the assumption of the speed of sound in soft tissues at 1540 m/sec instead of at 1040 which you said at 2.35 minutes at your lecture, please review. Thank you
This is an excellent video. Thank you so much. I am using it for teaching purpose. It saved a lot of my time. Very nice presentation, very well prepared and very well presented, I would suggest to be a bit slower so that the trainees grasp it without too much pause. Thanks a lot for the efforts.
Just to point out 200,000hz isn't equal to 2 mgz as you said in the beginning of the video. The correct conversion is... 2000000hz is actually 2mhz. Apologies if I misunderstood something , but great video nonetheless!
Awesome man...loved the lecture.only faced one problem...you talk so fast...I had to reduce the speed...but the lecture was awesome...will look the rest of the lectures now to learn what many teachers usually never talk about.... In indopak region, the teachers never teach you just so that no one can replace them.they will rob you off your money but you will get nothing at the end of 6 months unfortunately.... Once I mentioned the B mode and A mode modalities and the teacher got furious and he said there is no such thing like B mode or A mode. Now what to do with such a person. 90% of the echo reports formed at even the major hospitals in kpk, Pakistan are damn damn inaccurate.quackery is practiced at its worst but I refuse to practice any such quackery.... Let me amaze you now 😵 it takes atleast 20-30 min to perform one examination but here in my country it takes 2-3 mins only.... Now decide what kind of echo report would that be...thanks to TH-cam that gave me teachers from around the world
I m too from Pakistan, Karachi . I take more than 20 minutes to complete one normal scan of heart but if there are abnormal findings it take more than 30 minutes and sometimes more than an hour. I work in tabba heart institute where we follow almost all international protocols to make sure the study should be perfect.
Same situation in India too. U mention anything that your professor didn't mention while he/she was explaining something ,they take it all in their ego and humiliate you with unrelated things to make sure you never speak up again. Even though you literally have to beg, for them to take any form of class and even if they ever teach anything that comes down 'how to break a student's morale'. But, this is not the case for very senior professors though.
The speed of sound in tissue is 1540m/s but,it changes with the change in the density of tissue . The higher the density the faster will be the wave and vice versa
I am sorry but this was hard to understand only due to your speech... your speaking style in this video is not clear at all. If this was written text there would be no punctuation. I had to slow it down and rewind quite a few times too.
![CAMPปลิ้น | รวม Highlight 2024! PART [1/2]](http://i.ytimg.com/vi/6hnvNnvYloU/mqdefault.jpg)
On TH-cam settings slow the video speed to 75, it works perfect
exactly what i was thinking! Lol a lot of information to absorb at what seems like lightspeed
Meanwhile me, listening to it at 1.25x speed. ☠️
Edit.
This is making no sense without animation.
Thank you!! That condensed hours worth of pre-reading for my POCUS course!! You're a legend.
Thank you for making this! I've been designing in ultrasound for 2 years and this is the most helpful video on US physics I've seen yet.
Speed of sound in tissue, at 2:24 in the video, is not around 1040 m/s. It's in the range of 1450 to 1580 m/s depending on the tissue type. Ultrasound machine default speed assumed for soft tissue is 1540 m/s because it's a weighted average of what's most likely to be encountered in a scanning session.
Thank you, you are right, not sure how that made it through editing. thank you for catching it; I have added a note to the comments section for the correction.
Thanks for replying and for the videos.
Yeah I noticed that too.
This is an amazing video. Just quick fire, well explained most relevant information. Helped me so much to compensate for the horrible lecture I got. Somehow my professor spent 4 hours explaining mostly the same things and I didn't understand a thing.
I have done ultrasound a few years and I had gotten foggy on the physics. This covers the most important physics as fast as possible.
I am a physician ready to get started in point of care ultrasonography,. What a great review of the fundamentals! This really made my studying make much more sense. Your diagrams and animation are incredibly informative Thank you!
This video is wonderful. You explain attenuation of high & low frequencies very nicely. Thanks!
Thank you so much for this video. Been studying it for almost 2hrs now
Thank you for taking the time to do this video! Extremely helpful 🙂
Also be careful with BART for Doppler colors. The speed colorbar shown on US displays will tell you unambiguously if the flow is towards or away from the transducer by looking at the color AND the corresponding positive or negative sign for the speed value. Don't just assume BART gives the proper interpretation.
Agreed. These types of mistakes in teaching are unforgivable as it confuses the trainee.
Ken Rolt new addition to my knowledge.thanks
Little bit explain slowly means it's better to more understanding....
Jason, that is very interesting. I've worked with Phased Array Radar elements and RF, this is basically phased array for ultrasound. Amazing!!
Perfect video. Completely answered all my quriosity about how it works. Thank you.
My man is speed running a whole topic of medical diagnosis in a sub 20 run
Go to that settings symbol on the screen, click and go put it at 0.75×
There is a error! 2MHz is 2 000 000 Hz, not 200 000Hz...
That caught my attention as well.
Machines are calibrated at the assumption of the speed of sound in soft tissues at 1540 m/sec instead of at 1040 which you said at 2.35 minutes at your lecture, please review. Thank you
I am less worried about speed of sound and more about the speed of your video.
Nice video, thank you !
This is very well put. Thank you
Thank you very much for your helpful and formative video ❤🎉 but an average value of speed of sound in soft tissue is 1540 m/s 😊
Great video - a summary of almost everything in under 20!
Can anyone tell me if it is possible to stop ultrasound waves that are being directed at me by my upstairs neighbors?
Super helpful video! And I think the speed was perfect
Good job explaining...i am looking into this career and learning a lot from these videos.
Is there a transcript for this video?
That's like over half of Edelmans book in 17 min🤯😱
Too fast
This video has answered most of my questions on ultra sound imaging (basics), Thank you :)
This is an excellent video. Thank you so much. I am using it for teaching purpose. It saved a lot of my time. Very nice presentation, very well prepared and very well presented, I would suggest to be a bit slower so that the trainees grasp it without too much pause. Thanks a lot for the efforts.
Just to point out 200,000hz isn't equal to 2 mgz as you said in the beginning of the video. The correct conversion is... 2000000hz is actually 2mhz.
Apologies if I misunderstood something , but great video nonetheless!
Amazing explanation
You literally saved my future!! Thanks alot❤️❤️❤️
I thought the average speed in soft tissue is 1.540 m/s
Mondblume Mystic Yeah also MHz is million... He said 2MHz was 200,000 :/
Thank you very much sir, very informative for understanding the basics of ultrasound 🙏🏻
Hi, very informative video. What font have you used for your text? Many thanks.
Thank you. I used Helvetica light which was the default for the version of keynote used to create the slides.
Thanks for the great lecture.
2Mhz is not 200,000 is 2 ,000, 000hz , please correct it.
very good job,thanks alot sir
Perfect and fast revision!!!
Thank you, it helps a lot
This video is excellent. Thanks very much.
2MHz is 2.000.000Hz. Very basic stuff.
Great video! Thank you very much
This video is incredibly useful!
Thank you, hope it continues to help. feel free to share with anyone you think might benefit or be interested.
is ultasound has low amplitude?
Thanks, great video!
Superb - thank you!
Thanks! really clear and helpful :)
Soft tissue is typically assumed to be 1540 m/s, not 1040 m/s. Good video though!
Awesome man...loved the lecture.only faced one problem...you talk so fast...I had to reduce the speed...but the lecture was awesome...will look the rest of the lectures now to learn what many teachers usually never talk about....
In indopak region, the teachers never teach you just so that no one can replace them.they will rob you off your money but you will get nothing at the end of 6 months unfortunately.... Once I mentioned the B mode and A mode modalities and the teacher got furious and he said there is no such thing like B mode or A mode. Now what to do with such a person. 90% of the echo reports formed at even the major hospitals in kpk, Pakistan are damn damn inaccurate.quackery is practiced at its worst but I refuse to practice any such quackery.... Let me amaze you now 😵 it takes atleast 20-30 min to perform one examination but here in my country it takes 2-3 mins only.... Now decide what kind of echo report would that be...thanks to TH-cam that gave me teachers from around the world
I m too from Pakistan, Karachi . I take more than 20 minutes to complete one normal scan of heart but if there are abnormal findings it take more than 30 minutes and sometimes more than an hour. I work in tabba heart institute where we follow almost all international protocols to make sure the study should be perfect.
Same situation in India too. U mention anything that your professor didn't mention while he/she was explaining something ,they take it all in their ego and humiliate you with unrelated things to make sure you never speak up again. Even though you literally have to beg, for them to take any form of class and even if they ever teach anything that comes down 'how to break a student's morale'. But, this is not the case for very senior professors though.
Excellent thanks❤
I’m pretty sure through tissue is 1540 and no 1040.
Mike Martinez 5
you're right! it's always been 1540m/sec for soft tissues
The speed of sound in tissue is 1540m/s but,it changes with the change in the density of tissue . The higher the density the faster will be the wave and vice versa
@@najeebullah587 agree and thanks for the useful comment
Oh my goodness it would help if you would talk a little slower. What’s the rush?
Other than that it’s great info!
We use A scan
Well done M.R NOMURA
Why would you mess up such a good video by talking so fast. What's the hurry! I'm looking for a 0.5x speed.
Very helpful. Thank you!
this was so beneficial
very good sir
Thank you so much !!!!
Well done!
Thanks so much!
talks so fast. whats the hurry ??????
Amazing!
TKS BRIEF EXPLANATION
Very fast but good information
way too fast he needs to slow down so we understand better take a breath
Thank you so much
Very useful information but talk too fast and no bread in between.
2MHz=200,000Hz? or 2,000,000Hz
Okay 4
Thanks sit
Playback speed infinity
Thanks though
Def had to slow down your auctioneer speech 😅
Thx
OKC ✅☺️ a
thank alot
Can u please just slow down
Sound in tissue on average 1540 m/s or 1.54 mm/us
That was an error when the recording was done, there is a notation in the description with the correction.
@@TakeoKun Ok great, overall good review!
Good job explaining, but wish you didn't talk so fast
Interesting. 😍
I love this I like ultrasound the ultrasound is so legit :)
OMG
Please speak more slowly 👍🏻
TOO FAST
Un necessary Very fast
you talk so fast.... loved the fact that the video explained everything but wasn't 2 hours long, but please talk slower next time.....
Go to the wagon wheel / settings / lower right / and look for playback speed and change it to how you want it to be ..............
I am sorry but this was hard to understand only due to your speech... your speaking style in this video is not clear at all. If this was written text there would be no punctuation. I had to slow it down and rewind quite a few times too.