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Thomas Deffieux

@thomasdeffieux

Inserm research scientist, functional and less functional ultrasound imaging @ PhysMed Paris

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20.01.2025
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Latest posts by Thomas Deffieux @thomasdeffieux

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fUSI-BIDS extension proposal v0.0.12 BIDS Extension Proposal 40 (BEP040): fUSI-BIDS version 0.0.12.dev Available under the CC-BY 4.0 International license. Extension moderators/leads: Jean-Charles Mariani <jean-charles.mariani@cri-paris...

Next #fUSI - #BIDS meeting is coming up! ๐Ÿง 

๐Ÿ“… March 19, 5PM CET
๐ŸŽฏ Solving remaining spec remarks & moving toward official maintenance.

Newcomers welcome! ๐Ÿš€ Planning to BIDSify your data? Join us, weโ€™re here to answer your questions.

Details on the GDoc: docs.google.com/document/d/1...

26.02.2026 13:16 ๐Ÿ‘ 4 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

wow, congrats. amazing job and results !
Glad to see fUSI passing the fMRI acid test at so many different levels and pushed forward by fMRI experts. This is both highly impressive work and foundational for the field!

19.02.2026 21:19 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Structural and dynamic embedding of the mouse functional connectome revealed by functional ultrasound imaging (fUSI) Functional ultrasound imaging (fUSI) is an emerging hemodynamic neuroimaging modality whoseย potential for connectome-scale network mapping remains largely untested. Here, we establish aย non-invasive t...

If youโ€™d like to play with these data or run your own analyses, all datasets (fUSI + fMRI) and the full analysis code are openly available here
zenodo.org/records/1848... ๐Ÿš€
13/n

17.02.2026 12:25 ๐Ÿ‘ 2 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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๐—ž๐—ถ๐—ฐ๐—ธ๐—ถ๐—ป๐—ด ๐—ผ๐—ณ๐—ณ ๐Ÿฎ๐Ÿฌ๐Ÿฎ๐Ÿฒ ๐˜„๐—ถ๐˜๐—ต ๐—ฎ ๐—ป๐—ฒ๐˜„ ๐—ฝ๐˜‚๐—ฏ๐—น๐—ถ๐—ฐ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—ถ๐—ป ๐—–๐—ฒ๐—น๐—น ๐—ฅ๐—ฒ๐—ฝ๐—ผ๐—ฟ๐˜๐˜€
@felipecybis.bsky.social, postdoct in our lab, is the first author of the study "A vascular code for speed in the spatial navigation system", now published in Cell Reports: doi.org/10.1016/j.celrep.2025.116791

#Ultrasound #fUS #Research

13.01.2026 09:47 ๐Ÿ‘ 7 ๐Ÿ” 6 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Processing pipeline of HAM-SVD algorithm

Processing pipeline of HAM-SVD algorithm

๐Ÿšจ ๐—ก๐—ฒ๐˜„ ๐—ฝ๐—ฎ๐—ฝ๐—ฒ๐—ฟ ๐—ฎ๐—น๐—ฒ๐—ฟ๐˜: ๐—ต๐—ฎ๐—ฟ๐—บ๐—ผ๐—ป๐—ถ๐—ฐ-๐—ฏ๐—ฎ๐˜€๐—ฒ๐—ฑ ๐˜€๐—ถ๐—ด๐—ป๐—ฎ๐—น ๐˜€๐—ฒ๐—ฝ๐—ฎ๐—ฟ๐—ฎ๐˜๐—ถ๐—ผ๐—ป ๐—ณ๐—ผ๐—ฟ ๐˜‚๐—น๐˜๐—ฟ๐—ฎ๐—ณ๐—ฎ๐˜€๐˜ ๐˜‚๐—น๐˜๐—ฟ๐—ฎ๐˜€๐—ผ๐˜‚๐—ป๐—ฑ ๐—บ๐—ผ๐—น๐—ฒ๐—ฐ๐˜‚๐—น๐—ฎ๐—ฟ ๐—ถ๐—บ๐—ฎ๐—ด๐—ถ๐—ป๐—ด
โ€œExploiting harmonic signature of gas vesicles in amplitude-modulated singular value decomposition for ultrafast ultrasound molecular imagingโ€ a paper led by Ge Zhang & @mickaeltanter.bsky.social

27.01.2026 09:46 ๐Ÿ‘ 3 ๐Ÿ” 2 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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eMyosound core technology consist in tracking the speed of shear waves non-invasively for the assessment of cardiac diseases. All the animations are available here: www.sci-vis-com.fr/emyosound #science #medical #imaging ๐Ÿซ€๐Ÿงช๐Ÿ”ฌ๐Ÿก

26.12.2025 11:55 ๐Ÿ‘ 11 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Just published: non-invasive imaging of pericyte dysfunction in the brain โ€” a major breakthrough for understanding cerebrovascular diseases

#EICPathfinder #Neurovascular #Ultrasound #Neuroscience #fULM #microvasc #PhysMed @mickaeltanter.bsky.social @espciparispsl.bsky.social @inserm.fr

30.07.2025 12:07 ๐Ÿ‘ 19 ๐Ÿ” 8 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 1
fUSbrain #DAYS 2025 | Physics for Medicine Paris

#fUSbrain DAYS 2025 | Last call for registration!
Registrations will close on May 31st! Don't miss your chance to join us on June 19&20 in Paris, for two days dedicated to functional ultrasound neuroimaging!
๐Ÿ‘‰ Check the detailed program and register here www.physicsformedicine.espci.fr/fusbrain2025

20.05.2025 10:29 ๐Ÿ‘ 3 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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๐Ÿง  Use functional ultrasound imaging #fUSI to map brain networks mice - Fully funded PhD opportunity at
@cimecunitrento.bsky.social!

Supervisor: Dr. Alessandro Gozzi, Istituto Italiano di Tecnologia

๐Ÿ“Œ Apply by June 5, 2025
๐Ÿ”— phd.unitn.it/drcimec

#Neuroscience @gozziale.bsky.social

19.05.2025 10:05 ๐Ÿ‘ 3 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Opinion | The Science I Would Be Doing if I Werenโ€™t in ICE Detention

"I did not complete a customs declaration for frog embryos (for use in our labโ€™s research) in my luggage. [...] This would normally result in a warning or a fine. Instead, [...] I was sent to a detention center in Louisiana, where I have spent the past three months."

www.nytimes.com/2025/05/13/o...

13.05.2025 11:47 ๐Ÿ‘ 18 ๐Ÿ” 4 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 1

Congrats David and Baptiste, great work !

05.04.2025 06:39 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
Redirecting

[May 24, 2022]

Happy to say our ultrasound paper is now out in Brain Stimulation
doi.org/10.1016/j.br...

We used cultured neurons to dissect mechanisms of ultrasonic neurostimulation.
Most surprising: even an extremely short (4ยตs) single low-intensity pulse can generate neuronal activity.

25.01.2025 22:25 ๐Ÿ‘ 3 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
Post image Post image Post image Post image

[May 6, 2024]

Chaumerliac and Roche, 1949 - An unexpected vasodilator, Mescaline; Experiences made in Dachau in July 1944. - PMID: 18142704

A fitting date to upload this interesting bit of history [its first appearance online I believe]

English translation and original French in thread

25.01.2025 22:21 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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#fUSbrain DAYS 2025
Great news, we are extending the deadline for abstract submission to March 21st! Check www.physicsformedicine.espci.fr/fusbrain2025/ for more details.

06.03.2025 13:51 ๐Ÿ‘ 5 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

This was a wonderful conference! There was a sense of excitement as talks after talks revealed the incredible European neurotechnology powerhouses that are starting to deliver unprecedented brain health benefits!

21.02.2025 16:27 ๐Ÿ‘ 1 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Using fUS to investigate the effect of diet on brain health - Iconeus A new study uses the Iconeus One fUS system to show that poor diet in the mouse negatively affects blood flow regulation in the brain, with implications for brain health.

functional Ultrasound imaging provides new insights about the effect of fat diet on the brain and its protection using polyunsaturated acids
Collaboration with Hirac Gurden team iconeus.com/using-fus-to...

18.02.2025 10:37 ๐Ÿ‘ 10 ๐Ÿ” 3 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Illustration done for the first publication of my colleague Nicolas Zucker. He managed to measure heart and breathing rate by monitoring tissue motion in the brain using ultrasound, what a crazy idea ! #sciart ๐Ÿก #scicomm ๐Ÿงช #neuroscience ๐Ÿง ๐Ÿซ€๐Ÿซ๐Ÿคฏ

15.02.2025 10:59 ๐Ÿ‘ 37 ๐Ÿ” 8 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0
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Brain computer interface (postdoc/engineer)

๐Ÿง  Postdoc Position !
Join us in Paris to work on brain-machine interfaces (BMI) using functional ultrasound (fUS)! We're seeking a postdoc to further develop and validate fUS-based BMI with Caltech and Iconeus.
#Neuroscience #BMI #fUS #Postdoc
www.physicsformedicine.espci.fr/brain-comput...

10.02.2025 13:40 ๐Ÿ‘ 6 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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fUS-BIDS extension proposal v0.0.9 BIDS Extension Proposal 40 (BEP040): fUS-BIDS version 0.0.10 Available under the CC-BY 4.0 International license. Extension moderators/leads: Jean-Charles Mariani <jean-charles.mariani@cri-paris.org>,...

Hey fUSI users. As you were well aware, the next meeting on fUSI-BIDS, our soon to be data sharing standard, is happening next week 12/02 4pm CET. Please join us (details in the doc docs.google.com/document/d/1...) to discuss bidsification, metadata and share your opinion before your data ๐Ÿ˜‰

05.02.2025 10:36 ๐Ÿ‘ 5 ๐Ÿ” 3 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
A Neuropixels Opto probe with 3 blue emitters and 3 red emitters lighting up in succession, with corresponding neural activity in different layers of the cortex.

A Neuropixels Opto probe with 3 blue emitters and 3 red emitters lighting up in succession, with corresponding neural activity in different layers of the cortex.

Neuropixels and Optogenetics are delighted to announce the birth of

Neuropixels Opto

Combining high-resolution electrophysiology and optogenetics

Today in bioRxiv

960 sites, 28 emitters, 2 colors

By Lakunina, @karolinazsocha.bsky.social, Ladd, et al

www.biorxiv.org/content/10.1...

(1/2)

07.02.2025 09:18 ๐Ÿ‘ 325 ๐Ÿ” 116 ๐Ÿ’ฌ 7 ๐Ÿ“Œ 12

Happy to share our latest research on tracking tumor response in triple-negative breast cancer using ultrafast doppler ultrasound, paving the way for personalized treatments. Grateful for the amazing collaborative work with Shannon and the Rafat lab! ๐Ÿฉบ๐Ÿ”ฌ #CancerResearch #BreastCancer #Immunotherapy

31.01.2025 17:25 ๐Ÿ‘ 5 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Exploring Neural Dynamics in the Auditory Telencephalon of Crows using Functional Ultrasound Imaging https://www.biorxiv.org/content/10.1101/2024.11.26.625563v1 Crows, known for advanced cognitive abilities and vocal communication, rely on intricate auditory sy

Exploring Neural Dynamics in the Auditory Telencephalon of Crows using Functional Ultrasound Imaging https://www.biorxiv.org/content/10.1101/2024.11.26.625563v1

28.11.2024 01:17 ๐Ÿ‘ 3 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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โ–ถ๏ธBraincoder, the BMI feedback conference, features outstanding speakers include Edouardo Fernandez (V1 microstimulation), Guillaume Charvet (Clinatec), Mickael Tanter (fUS), and more international speakers!

โ–ถ๏ธWe are awaiting your registration! braincoder.sciencesconf.org

22.11.2024 17:24 ๐Ÿ‘ 3 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

thanks, quite new over here !

26.01.2025 15:47 ๐Ÿ‘ 0 ๐Ÿ” 0 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0

Hi Charles, please add me to the bsky ultrasound club !

26.01.2025 12:32 ๐Ÿ‘ 1 ๐Ÿ” 0 ๐Ÿ’ฌ 1 ๐Ÿ“Œ 0

Neuroscience + Ultrasound imaging + Paris = Show your research ! ๐Ÿงช๐Ÿ”ฌ๐Ÿง 

23.01.2025 09:04 ๐Ÿ‘ 9 ๐Ÿ” 1 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 0
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Join us at fUSbrain #DAYS, a workshop on ultrasound neuroimaging, in 19-20/06/2025 in Paris. Submit your abstract on www.physicsformedicine.espci.fr/fusbrain2025
Organized by PhysMedParis, with the support of Iconeus.
@inserm.fr @espciparispsl.bsky.social @psl-univ.bsky.social @cnrs.bsky.social

23.01.2025 08:52 ๐Ÿ‘ 10 ๐Ÿ” 2 ๐Ÿ’ฌ 0 ๐Ÿ“Œ 2