Multi Echo Resting-state fMRI (rfMRI) Protocol?

[Dr. Simon Maier]

Hello,

I would like to know if there are any considerations to integrate multi-echo sequences into the resting-state fMRI (rfMRI) protocol?

Thank you very much and best regards,

Simon
______________________________________________

UNIVERSITÄTSKLINIKUM FREIBURG
Department für Psychische Erkrankungen
Klinik für Psychiatrie und Psychotherapie
Experimentelle Neuropsychiatrie

Dr. Simon Maier
Biologe

Hauptstraße 5 · 79104 Freiburg
Telefon: +49 761 270-65530
Email: simon...@uniklinik-freiburg.de
Homepage: https://www.uniklinik-freiburg.de/psych.html

[Glasser, Matthew]

We did some work to get multi-echo supported by the HCP Pipelines as I had high hopes that it would improve fCNR as has been previously reported (and that one can see with some simplistic MR physical modeling). Unfortunately, when I did the head-to-head test that is not what I found (multi-echo was not bad, just not quite as good as a directly comparable single echo scan). This could be because prior literature has not accurately reported the multi-echo protocols including all variables that affect SNR/resolution and that effects of using different kinds of ICA denoising are being conflated with multi-echo fMRI. Thus, at this point I would recommend sticking with an optimized single echo scan.

Matt.

Email: simon...@uniklinik-freiburg.de <mailto:simon...@uniklinik-freiburg.de>
Homepage: https://www.uniklinik-freiburg.de/psych.html <https://www.uniklinik-freiburg.de/psych.html>


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[Andreas Bartsch]

hi,
yes - this is my impression, too.
cheers,
andreas

Am 14.07.24, 17:38 schrieb "'Glasser, Matthew' via HCP-Users" <hcp-...@humanconnectome.org>:

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