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SNU-LIST / chi-separation

Code for magnetic susceptibility source separation
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R2' Unit #4

Open Danirid opened 1 year ago

Danirid commented 1 year ago

Dear fellow developers,

I am reaching out to seek assistance regarding a matter I encountered while utilizing X-separation. Specifically, I am uncertain about the appropriate unit for R2', and I would appreciate some guidance in this regard. Should I employ seconds^-1 or milliseconds^-1?

To gain further clarity, I conducted experiments with both units and found that when using milliseconds^-1, the results appeared visually similar to those reported in the article. However, when I opted for seconds^-1, the images displayed patterns that differed from what was presented in the article (the image looked more similar to a QSM image).

Therefore, I kindly request your expertise in specifying the recommended unit for R2' in this context.

Thank you for your assistance and insights.

jadenecke commented 1 year ago

from my experience it is ms if you use the gui and seconds if you use the scripts.

Danirid commented 1 year ago

@jadenecke That's weird since the GUI uses the same function as the script so they should give the same results. But I think maybe using the data in seconds is better?

jadenecke commented 1 year ago

hard to tell with the scripts all beeing compiled. I think there might be some scaling going on on the GUI side. However in the script the commented parameter are TE = [0.00xx, 0.00xx, 0.00xx, 0.00xx, ...]; so I very much assume its seconds. To get the same values from the GUI however I need to enter ms.

Danirid commented 1 year ago

Yes exactly this is where I got confused. But Thanks anyways!!