MRI BACK TO BASIC - SLICE RESOLUTION

[@alanetienne1168]

Are you acquiring each sequence with one breath hold. I usually increase my concatenation to reduce the time of breath hold.

[@Nguyen_MRI]

What sequence do you mean?

[@mihaimoldo]

Great video Bac! Btw you can think it as a second phase encoding, that's why you can get wrap-around artifacts in the slice direction.

[@Nguyen_MRI]

Thanks for input. Indeed ☺️👍

[@cher545]

Starting mri tech school in illinois at end of july. Was referred to you by mri guy. Glad i came to your channel.

[@Nguyen_MRI]

Thank you. Wish you the best with school and work ☺️

[@medicblast5997]

Yeah you're right about it its too tough to get in the one time study,, 😂😂 Thanks for best video

[@Nguyen_MRI]

Thanks for the input. ☺️

[@interwebzful]

love these back to basics. this one was especially awesome

[@topolnicianucristiandrei1859]

Very interesting infos. Thank! Please make an video about the image filter using

[@islamshawqi3823]

Hi sir , is there any reference for scan parameters, especially when working on open MRI siemens and HITACHI, WEAK MAGNETS

[@Nguyen_MRI]

@@islamshawqi3823 hi I'm not sure thus I'm not familiar with the ones you mention here.

[@liliakapanadze3709]

Hello, thanks a lot for your videos. I was asked to perfom Cardiac 4d flow with resolution 3x3x3 how can I change that? Than you in advance

[@Nguyen_MRI]

@@liliakapanadze3709 kzbin.info/www/bejne/o3bdpHuVhdyGercsi=ImhdeMV5m7GgjvrW

[@alessandrogrimaldi3142]

Thank you for the video. I’m a neuroradiologist and I don’t find any use for slice resolution values below 100%: slices start to look smudgy and imprecise (i work with GE but i guess it is the same on other vendors). Still prefer to use interpolation only in-plane. What are your thoughts (and your radiologists’ preference)? Do you think it actually improves images or it’s just a way to cheat and say you are doing thin slices?

[@Nguyen_MRI]

Thanks for the comment and it's very important you talk about here which not many think of. My personal experience (not breath hold sequences for liver) i would use 100% as you mention on slice res. However, I've seen improvement by doing like this and you will have approx same scan time. Example:. 1 x 1 x 1. So last here is slice thickness of 1mm. Using 100% means no interpolation on slice. So by going down to 0.5mm. Then use 50% slice res. Add slices to cover the same anatomy. You will see that these mpr is better. (from my experience with my rad). Please test and use the mpr in PACs. Zooooom in well and see the differences. With that said. I always interpolate on phase and frequency. This doesn't cost anything but outcome is also better. Please test here also and zoom in on the mpr's. With that said, i don't use this approach on all 3D sequences. For some it's clearly good but for some it's not big difference. So try and decide what's best. ☺️👍

[@alessandrogrimaldi3142]

@Nguyen_MRI thank you for the advice, I will try indeed. If you happen to make one of your videos in which you try different settings, that would be awesome (but I know it takes time). As far as I got it, slice resolution is practically speaking the same as "slice overlap" in CT reconstrunction. We use it on SWI: instead of 3 mm, we do 3 mm 50%. This way MPRs are way better. But I'll test on cisternography (SPACE/CUBE/BRAINVIEW) and try do appreciate the differences. Thank you for the great contents!

[@Nguyen_MRI]

@@alessandrogrimaldi3142thanks. I actually had this in mind as a future video. Hopefully i got time to make one in near future. ☺️👍

[@aneetaedwards3775]

hi i always follow your videos they are very helpful. i have a doubt , i working with siemens sola when ever if we position feet first for legs, are pelvis examinations we use to get a SAR issues, my line manager said you can position head, but still i have a SAR issue, can please guide me

[@Nguyen_MRI]

Head first reduce this issue. But also check this video. kzbin.info/www/bejne/mX_Ippl_np6je6Msi=uNE6DiLiKbLM8qc2

[@sahin314]

Hello mr. How can I learn all parametres about siemens Mrı for example about "pat mod " grappa,msense or caipsirina, or etc parametres T2 decay, about bandwith and others. How can I learn.( sorry about my English🙏)

[@Nguyen_MRI]

Many great learning platforms out there. Just have to Google specific topics because mri is a very wide topic. Start basic.

[@hasanchaudhary8950]

MRI master is best

[@Oren5050i]

Does it work the same for the 3D whole heart?

[@Nguyen_MRI]

Indeed it does

[@Oren5050i]

What slice thickness do you suggest if they want to see coronaries?

[@Nguyen_MRI]

@@Oren5050i thin as possible. 0.9-1mm max.

[@Oren5050i]

I did before with 0.65-0.75mm in cardiac congenital scans. In most, the image resolution was not that great to see coronaries. Thank you for the suggestion!

[@emrearslan8274]

I am working at siemens vida and i don't have a coil for shoulders and we are using flexi coil and we have action artefact so can you teach me a solution ?

[@Nguyen_MRI]

What flexi coil is this? Ultraflex 18ch?

[@emrearslan8274]

@@Nguyen_MRI yes sir

[@Nguyen_MRI]

@@emrearslan8274 i need to see some images. And i don't know how you position your patients and coil. Arms etc.

[@Nguyen_MRI]

I would do it more or less like this: kzbin.info/www/bejne/ap_VY42adsmHldEsi=p8_QunEs9Y7bPLb5

[@emrearslan8274]

Thank you sir i am watching right now and i wil try something if i don't fix this problem i will be write you again. Thanks your support

[@robertanderson3700]

👏👏👏👏 que massa

[@selimakko]

👍🏻

[@hishamvadakkekkandi]

First