Parameter setting for 7T 1H MRS datasets

[harshal patel]

Dear Tarquin users,

 

I do proton single voxel spectroscopy using 7T MRI scanner. I have acquired a SVS dataset using STEAM sequence and analyzed it using TARQUIN. I have used parameter settings (Steps1…5) which I have attached(.jpg) with this message. Could anyone please confirm if  I can continue with these parameter settings  and analyze the 7T proton SVS datasets ??? or do I need to change any parameter/variable??

 

I will be really grateful to you.

Best regards,

Harshal  

 

[Martin Wilson]

Hi Harshal,

There is going to be a problem with the metabolite simulation here.
You set a 4ms TE and a 12ms mixing time (TM). Are you sure the TE
shouldn't be 40ms?

Martin

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[harshal patel]

Dear Martin, 

Thank you so much for your quick reply. Actually the data is acquired with 28ms TM. I donot know why it took 12ms after importing the data. I have change the timings of TM from 12 to 28ms. Do you think the simulation should work now (keeping other parameters unchanged)?  I am sure about TE between 4-6ms. 

Best,

Harshal 

[Martin Wilson]

Hi Harshal,

I was assuming that TM < TE, but I was mistaken as this isn't the case
for STEAM. Just adjust the TE and TM to match your sequence and it
should work...

Martin

On Wed, 12 Jan 2022 at 17:15, 'harshal patel' via TARQUIN users' group

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