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grid-258 on skyra

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Hannah Lindsey

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Aug 7, 2024, 9:05:57 PM8/7/24
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Hey, Frank!

Thanks so much for sharing the exar and other details for your recommended 258-direction grid sampling scheme! We'd like to use the sequence for an upcoming study, but the scanner is a Skyra. Do you by chance have the exar for a Skyra that you could share with me?

Thanks so much!
Hannah

Frank Yeh

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Aug 8, 2024, 9:19:11 AM8/8/24
to lindse...@gmail.com, DSI Studio
I am sorry I don't have it.

I can help checking the results or parameters you acquired to see if they are good.

Best 
Frank

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Andre Gouws

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Aug 8, 2024, 10:58:24 AM8/8/24
to fran...@gmail.com, lindse...@gmail.com, DSI Studio
I'll just chip in here for the record as Iam working over many scanners at the moment - I have had a lot of luck importing across Prismas, Skyras and even Vidas - some tweaking is required (so getting Frank to double check is handy) but you may be surprised at how little you need to change. Unfortunately I don't have Frank's  258 grid file to share but I work with many similar sets of grids.

Beware the max b-value with the different gradient coil strengths though - you may get very little signal on a Skyra at b=4000, 3000 and even 2500.

Andre'

Hannah Lindsey

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Aug 8, 2024, 3:11:50 PM8/8/24
to Andre Gouws, fran...@gmail.com, DSI Studio
Awesome! Thanks to both of you for your help!
_________________________________
Hannah M. Lindsey, PhD
Research Associate
TBI and Concussion Center
Department of Neurology
University of Utah

On Aug 8, 2024, at 10:58 AM, Andre Gouws <gou...@gmail.com> wrote:



Frank Yeh

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Aug 8, 2024, 8:09:34 PM8/8/24
to Andre Gouws, lindse...@gmail.com, DSI Studio

Thanks Andre for chipping in!
Wish I had more experience in other scanners.

Best
Frank

Hannah Lindsey

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Nov 11, 2024, 4:46:50 PM11/11/24
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Frank,

We set up the grid-258 sequence on our skyra, and we've collected some data using that protocol. If you're still willing/able to check the parameters to make sure it looks okay, that would be greatly appreciated. I have six scans (but you'd only need to check as many as you see fit) that I can share with you, but I currently have limited internet access, and it would take a very long time for me to upload it to your Dropbox folder. Can I share a link to the data with you via email or some other way that isn't public?

Thanks so much! 
Hannah

Frank Yeh

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Nov 11, 2024, 4:47:59 PM11/11/24
to lindse...@gmail.com, DSI Studio
Sure. Feel free to share as you see fit.
Frank

Hannah Lindsey

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Nov 11, 2024, 6:19:10 PM11/11/24
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Wonderful. I just sent it to your fran...@gmail.com address.

Thanks again!!

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