MRI - MATRIX BACK TO BASIC
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- čas přidán 1. 04. 2023
- It’s been a while since I had a topic like this. Matrix is an important parameter when it comes to optimizing a sequence. I hope with this video you’re able to have a better practical understanding of matrix.
Remember to check out and support my PATREON here: / bacmri
Thanks for watching, following and support.
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I love every one of your videos. They continue to help me and I’ve been scanning for 32 years.
Thank you for kindly words coming from someone like you with a very long experience in this field ☺️
Love to see you explain WARP and VAT in what the technique does, and if it's really reducing metal artefacts.
Thank you for the these videos. I just transferred from X-ray to mri at the hospital I work at, and there is sooo much to know
Yes it’s a never ending learning ☺️
Very important vedio and very very thankful for you to make a vedio 😊
Great vedio 👏Thank you
Matrix. Is this something you have in mind whenever you optimize a sequence?
Definitely- would appreciate your thoughts on interpolation. I assume that’s why your video shows different resolution values for “acquisition” and “reconstruction”?
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I made several videos of interpolation in the past. ☺️
i love yours videos ❤️❤️
Thank you so much
Great video
Btw I totally agree with you, our Radiologist hate BIG FOV. We might get QA if we do so.
Thanks very much!
Thank you so much
Thank you so much pro
Yes, that's what I'm thinking.)
Thankyou for your videos 🙏 very informative
Uhm quick question does it apply as well if you are scanning a small FOV part like an elbow?
Should I decrease the Base resolution?
Yes this is the basic of resolution.
Plz make one vedio for any MRA /MRV and how to set the measurement to both study.
Best book to understand mri basics physics
1)MRI in practice by Catherine Westbrook
2)MRI from picture to proton
Thank you for this video, so if i want to make the FOV bigger i also need to increase the base resolution in order to maintain the resolution
Very correct. 👍
👍🏻
with the same pixels , what is your perception between higher or lower fov compared to the image quality?
From my opinion I want dedicated fov for area of interest.
Can you please tell me how do we decide frequency direction for each plane?
Depends on what you are imaging and what plane you’re at.
Pls do one video of functional mri
I used to not worry about it because I was on philips and FOV and Res were unrelated you just imputed the voxil size you want. Now going to semins I have to think about it again.
True. I guess you get used to it fast 👍
sure do, Now I am having to learn Siemens all over again on the 3T Vida with the absolute newest version. Any pointers?
@@Nguyen_MRI
Hi Bac! Great video as usual!
I just want to focus on the first comparison.. In my opinion the second scan is far away better due to the higher SNR (1,36). When you zoom in, it seems that the second scan has much less noise. So the question is, don't you think that is much better increase the FOV and the base resolution to minimize noise instead of having a tighter FOV and less base resolution?
I mean, if the acquisition matrix is the same, might as well have an image with less noise, right?
(obviously without considering the increasing of the time of acquisition)
Yes but it all depends on coils and radiologist preferences. Imaging dedicated organs from my experience they don’t want big fov even though the resolution is the same. Also for pediatric imaging. I made this video just for a better understanding of the relationship between matrix and fov. Of course all pro and cons but the theory and practice are there.
@@Nguyen_MRI of course you're right! Anyway is something I've never thought about... It's just something to keep in mind!
Thanks for the reply!
@@aleiatar me neither. No one told me this. I guess it’s an important key factor to keep in mind ☺️
the resolution is the same, but in your opinion which is the best image without taking into account the fov?
@@iracvillar5576 for this knee I want dedicated fov of 150-160. But again I would have optimise other parameters as well. This was just a demo of the relationship between matrix and fov.
Thank you so much all videos
Can you please send the educational website of Siemens company, on which this video was designed
You find more educational content here: pep.siemens-info.com/en-us/404
These video was design by me. Not with the vendor.
@@Nguyen_MRI
Thanks
What I need is to work on the ringer as an external app to do some testing. Not having a patient
Off topic. this is siemens nomenclature....T1 TSE COR P2 320. What does the P2 stand for? I have spent an hour on this and its driving me nuts. just need a nudge in the right directions and I can look it up. thanks.
Hi. P2 here means pat 2. Acceleration of parallel imaging.
@@Nguyen_MRI Thanks! Your videos are great! I will spread the word!
@@lmuscae1 thanks for your kindness.
Sir how to find out matrix size, formula?
And
What is mean by 512x512
You mentioned in video
And why write in this format?
Kindly guide
mrimaster.com/index-4/
@@Nguyen_MRI thanks alot Sir 💕❤️
I guess my hearing is bad, because I did not follow what you meant about the image (looked like a wrist).
Thanks for tuning in on my channel. I don’t think your hearing is bad. Probably my English also not an easy topic. Nevertheless, many great books out there to read for a better understanding. It’s for sure a knee which I demonstrated in this video.
Best book to understand mri basics physics....
@@devkgupta there isnt just one. but many. here are some: www.amazon.com/MRI-Picture-Proton-Donald-McRobbie/dp/1107643236/ref=sr_1_1?crid=1E9SCCU8ZPXUA&keywords=from+picture+to+proton&qid=1680512252&sprefix=from+picture+to+proton%2Caps%2C161&sr=8-1
www.amazon.com/MRI-Practice-Catherine-Westbrook/dp/1119391962/ref=sr_1_3?crid=202ER43DIEE8O&keywords=westbrook+mri+basic&qid=1680512271&sprefix=westbrook+mri+basi%2Caps%2C158&sr=8-3
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