MR SPECTROSCOPY - “HOW I DO IT”

Рет қаралды 34,926

Күн бұрын

After request from my viewers I’m happy to break down a difficult topic such as Spectroscopy. I will try to show you how to perform this along with post processing and tips/tricks to avoid pitfalls.
Tune in and check it out.
Thanks for watching, following and supporting.
#S_MAGNETIC_VLOG #MRI #SIEMENSHEALTHINEERS #SPECTROSCOPY #MEDICAL_IMAGING #MRI_TECHNOLOGIST #MEDICINE #MRI_RADIOGRAPHER #MRIRADIOGRAPHER #RADIOLOGY
References:
• Adventures - A Himitsu music: bit.ly/2D2Kuk2
• MRI Spectroscopy RADIOPAEDIA.ORG: bit.ly/3vZoIEo
• Clinical pitfalls…. Cianfoni.A., et.al: bit.ly/34QHNwL
• A practical guide…. Essig,M., et.al: bit.ly/3z7kfS4

Пікірлер: 88

@frankiechankf1 3 жыл бұрын

For localizer , we will use the post contrast sequence. Some tumours will be enhanced and it is more easier to put the small boxes in CSI sequence to include the tumour . The curve will be much better. Besides, we will reformat the MPRAGE 3D sequence into sagittal and coronal plane and use SCROLL NEAREAST to help to put the box more precise.

@Nguyen_MRI 3 жыл бұрын

Yes. Smart move and agreed. We also use post gd sequences to position and tune in using the planes we got. The “little” extra time you put in to be as perfect as possible, you will get a better curve and save rescanning.

@23232Bing 3 жыл бұрын

Been waiting for this!

@ahmedmuhamed864 3 жыл бұрын

very interesting and informative thank you Bac

@justinecouture193 3 жыл бұрын

Thank you Bac, another great video :)

@anastashsmaltezos6978 3 жыл бұрын

You are amazing Thank you so much

@ShahrukhKhan-qj6uq 2 жыл бұрын

Thanks for this.

@ngocthanhhoang7219 3 жыл бұрын

Thank you for sharing, Mr Bac (y)

@mdmohibullah2361 3 жыл бұрын

Thanks, I required best information

@jcdebelen8983 3 жыл бұрын

Wow haha what a coincidence! I was doing MR spec when I see the vid popped up into my feed. Awesome!

@Nguyen_MRI 3 жыл бұрын

That’s awesome ☺️

@T1TaN1k 3 жыл бұрын

Thanks for the video! Perhaps, in the next spectroscopy video some tips on the water suppresion and chemical shift displacement artifact would also be worth mentioning

@Nguyen_MRI 3 жыл бұрын

Thanks. It’s a large topic to cover.

@josepc4232 3 жыл бұрын

Great explanation, once again thanks for sharing!!!! What about fMRI?

@simonedinatale 3 жыл бұрын

Agree with you Bac 👍🏻 very difficult topic, is a diffiucult practice to do. You need time and must be focused on the lesion to study. Great job.

@Nguyen_MRI 3 жыл бұрын

Thank you. I’m not familiar with other vendors when it comes to spectroscopy. I guess “to do” is more a like the same. But the physics is just palm sweating ☺️.

@mohamedkhalil4890 3 жыл бұрын

Thank U soooooooo much :)

@andesastro 2 жыл бұрын

Hey Bac, these months ive already had a couple of cases which required spectroscopy and I found your tips pretty helpful. One thing that always pops into my mind is you saying that the voxels are covering bone and fluid so the image quality wont be good. Ive tried lowering the FOV and VOI but as always SNR reduces quite a bit and makes me unsure if Id waste my precious 7min. For example in cortical lesions would you prefer going with SVS? Thanks again like always.

@Nguyen_MRI 2 жыл бұрын

Good question. Dropping the voxels will kill the snr for sure. Yes some sites prefer svs. I recommend you to talk with your radiologist whenever they are post processing these spects and also a physician if they are around. Spectroscopy itself is challenging and difficult for sure. Nevertheless, thanks for finding value in the video. 😊

@rafabundiz 7 ай бұрын

Love your video man. Great stuff. Do you have tips on the Spectroscopy on the XA software?

@Nguyen_MRI 7 ай бұрын

Thanks. No i haven't made a video for that yet.

@elisamedeiros8881 3 жыл бұрын

Thank you Bac. I believe the FWHM max on a 3T is 20.

@Nguyen_MRI 3 жыл бұрын

Yes,are mostly correct there. THANK YOU. ☺️

@dvalled18 3 жыл бұрын

For a single voxel yes. If you use a csi i think you could work

@sandhyapal6698 Жыл бұрын

Sir could you make a post processing video for alanine peak in spectroscopy

@alpha_uncle_6 2 жыл бұрын

Hi Bac, nice video! Could you shed us some light on the difference between csi slaser and csi se? Thanks!

@Nguyen_MRI 2 жыл бұрын

www.cmrr.umn.edu/spectro/

@Opyodd Жыл бұрын

🔥🔥🔥🔥

@franciscomorales15 3 жыл бұрын

Could you make a video how to do tractography? post processing ✌️

@andesastro 3 жыл бұрын

Was about to ask for the same. Thanks for all the videos Bac! Take care

@jasvinderjassi7917 2 жыл бұрын

Super thanks

@sreekanthsree6028 3 жыл бұрын

Can you do CSF and post process please

@vc7417 2 жыл бұрын

I have seen someone adding lots of sat bands around the multi voxel white square (makes FWHM closer to 15) but when I tried to add sat band today it was not allowed. Are the sat bands necessary? Also for some reason I cant get the confirm frequency adjustment window to show during the multi voxel one. How do I adjust that? I did tick the adjust line when setting up. Thanks

@aruizglz 2 жыл бұрын

Podrias traducir tus videos, al español, seria fantástico, gracias

@beysimakifoglu592 3 жыл бұрын

Hello there. Can you do MR perfusion and mr functional brain video? Thanks for sharing! My device is GE Signa voyager :/

@mdsahib3184 3 ай бұрын

Kha pe job krte ho sir

@Nguyen_MRI 3 ай бұрын

@RafaelAlmeida838 4 ай бұрын

Brasil 🌺

@PhixieGT 4 ай бұрын

Hello, it's really hard to find MRS information online... Since MRS focuses on small tissue and generates spectrum; are there any additional risk from normal MRI? Also, is it efficent to check T2 hyperintensities that does not look like tumor when patient heavily alergic to gd?

@kamalhassan8358 3 жыл бұрын

Please uplode a video about step by step MRI scan.

@Nguyen_MRI 3 жыл бұрын

It’s a huge field. I already made a lot of video on certain examinations. Check those videos also.

@tosimatom.9411 Жыл бұрын

Hello been watching tou in yourube and alao your tips in linkedin. How dis you know so much about mri? Which reference are tou reading

@Nguyen_MRI Жыл бұрын

thanks. kzfaq.info/get/bejne/adRdfM2Fm8_IcWg.html . ive been in this game for many years. time flies. but im lucky to have a good workplace with good colleagues around me which keeps me motivated. you never stop learning. i still learn so much in this field :)

@interwebzful Жыл бұрын

this isn't related but could you do an advanced video on importing new sequences? like with the .dll, .so and .exar1 etc files and how they should be saved in dot cockpit etc? i find the siemens UI super unintuitive and confusing in this way :-/ thanks for considering

@Nguyen_MRI Жыл бұрын

kzfaq.info/get/bejne/eceSdpNn18i5ZGg.html

@thusharaweerakoon3451 3 жыл бұрын

Better to do with manual adjustments.

@user-rp7nt3eb8n 3 жыл бұрын

Hello thank you for sharing your knowledge By the way, i have questions Do i have to know chemistry to understand MRS?

@Nguyen_MRI 3 жыл бұрын

Good question. But I don’t think so.

@user-rp7nt3eb8n 3 жыл бұрын

@@Nguyen_MRI Thank you!

@harryrimorinmarzan6737 Жыл бұрын

Sir bac i have a question, do we need to move also the planning in SAG and COR sir ? Or only the AXL ?

@Nguyen_MRI Жыл бұрын

At least two planes from my opinion. There is also good if having the possibilities to do so. Never one alone.

@abdelfettahzenasli4200 2 жыл бұрын

Hey Bag... I want to ask you about the 31P MRSpectro... How can I do it? In Siemens 3T vida

@Nguyen_MRI 2 жыл бұрын

hi you mean this? www.siemens-healthineers.com/magnetic-resonance-imaging/options-and-upgrades/clinical-applications/31-p-spectroscopy

@paulnoyal Жыл бұрын

Sir,Can you explain what you mean by 2Distortion and no distortion

@Nguyen_MRI Жыл бұрын

pubmed.ncbi.nlm.nih.gov/16757858/

@fathimaazha5025 7 ай бұрын

Why we take spectroscopy after contrast injection? Any specific reason? Or can we take before contrast also???

@Nguyen_MRI 7 ай бұрын

Good question. Take post gd to make the protocol more time efficient. A post gd t1w with enhancement is easier to place the spectroscopy. But of course also possible to do this pre gd.

@fafben 3 жыл бұрын

Thank you Bac, why did you choose the 3T spectroscopy presets ?

@Nguyen_MRI 3 жыл бұрын

Oh no. That’s totally wrong. Supposed to be from the folder 1.5T. Thanks for the head up. Actually I’m going to compare when I get to work. Between presets 1.5T and 3T. 😬

@fafben 3 жыл бұрын

@@Nguyen_MRI ;) However , the results that you have seems ok ! That’s weird

@Nguyen_MRI 3 жыл бұрын

@@fafben I just didn’t noticed when I did this video. Strange thing though.

@pkvlog836 Жыл бұрын

Hello sir,plz give ur wtsapp no

@MrSaheb-n9e Ай бұрын

How to add Lipid

@divyank.t.5710 Ай бұрын

Hi.. What could happen if we reduce the average of spectroscopy from 3 to 1 or 2.. Will that do anything to the results(peaks in the graph)? Thanks..

@Nguyen_MRI Ай бұрын

@@divyank.t.5710 you can of course save time but might also struggle from low snr

@divyank.t.5710 Ай бұрын

@@Nguyen_MRI thanks for the response.. What could the low Snr do to spectro?

@Nguyen_MRI Ай бұрын

@@divyank.t.5710 i haven't been there to try that. But I'm sure the peaks comes out badly. Doing a single voxel can be helpful in time savings.

@otigadental5559 Жыл бұрын

Can u perform Perfusion on Magnetom?

@Nguyen_MRI Жыл бұрын

Yes perfusion can be performed.

@ZubairKhan-sb2ns 3 жыл бұрын

Sir how can we choose between SVS and CSI ?

@Nguyen_MRI 3 жыл бұрын

they have their pears and pitfalls. so please check the links i provide. very much good info in those free papers

@ZubairKhan-sb2ns 3 жыл бұрын

@@Nguyen_MRI Thanks 💓

@mohamedkhalil4890 3 жыл бұрын

tractography please :(

@mohamedhabibfezzani1589 3 жыл бұрын

How can you do a manual shiming ?

@Nguyen_MRI 3 жыл бұрын

www.mcw.edu/-/media/MCW/Departments/Radiation-Oncology/MRI-Protocols/Siemens-Manual-Shim-Process.pdf?la=en

@mohamedhabibfezzani1589 3 жыл бұрын

@@Nguyen_MRI thank you 😊

@Nguyen_MRI 3 жыл бұрын

@@mohamedhabibfezzani1589 you’re welcome.

@dharampalvaidhya5523 3 жыл бұрын

How to get ratio of choline creatinine

@Nguyen_MRI 3 жыл бұрын

Check the video at around 9min:21sec. Just choose choline creatinine there

@nickp.bernarte2425 2 жыл бұрын

Bac what's the difference csi 135 to csi 270

@Nguyen_MRI 2 жыл бұрын

good question. depends on your case and what kind of metabolite you want to highlight. please do a futher reading on this paper for a better understanding. @t

@nickp.bernarte2425 2 жыл бұрын

@@Nguyen_MRI thank you bac