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Mahsa Dadar

@dadarmahsa.bsky.social
229 followers 409 following 7 posts

Assistant Professor, Douglas Cerebral Imaging Centre, McGill University vandalab.github.io Neuroimaging, Alzheimer's disease, Cerebrovascular disease, Neurodegeneration, WMH

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Reposted by Mahsa Dadar
Olivier Parent @oparent.bsky.social · 26/05/2026
New paper “Characterizing spatiotemporal white matter hyperintensity pathophysiology in vivo to disentangle vascular and neurodegenerative contributions” out in Nature Communications! doi.org/10.1038/s414...
doi.org
Characterizing spatiotemporal white matter hyperintensity pathophysiology in vivo to disentangle vascular and neurodegenerative contributions - Nature Communications
Using advanced MRI modeling, this study found distinct spatial and pathophysiological signatures in vascular- and neurodegeneration-related white matter hyperintensities, clarifying their interpretati...
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Aliza Brzezinski-Rittner @albrzez.bsky.social · 25/05/2026
It’s out! 🎉 Check our paper “Intracranial volume: To adjust or not to adjust? It is not a matter of if, but how” 🧠. We wanted to evaluate the effectiveness of different methods to adjust for total intracranial volume (TIV) to remove its effect on sex differences in aging trajectories. 1/11
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Mallar Chakravarty @mallarchak.bsky.social · 23/05/2026
Love seeing this paper coming out from my science neighbours @douglasresearch.bsky.social Congrats @dadarmahsa.bsky.social @albrzez.bsky.social !!
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Mahsa Dadar @dadarmahsa.bsky.social · 11/02/2026
We hope your projects for The Data Quartet Challenge are progressing well! To help us organize the review process, please send us the following details before Feb. 20th: - Title -Keywords -Datasets you plan to use Looking forward to seeing your exciting work!
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Mahsa Dadar @dadarmahsa.bsky.social · 06/02/2026
Job Alert! 📢📢📢 We're looking for a motivated RA with experience in histology/IHC processing: douglas.research.mcgill.ca/offres_d_emp...
douglas.research.mcgill.ca
Research Assistant-Histology (Dr. Dadar) - The Douglas Research Centre
20/03/2026
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Mallar Chakravarty @mallarchak.bsky.social · 22/12/2025
Excited for this new paper in @braincomms.bsky.social by Denise Wezel and @oknox.bsky.social The association between white matter hyper intensity volume and menopausal status in the UK Biobank @linasifi.bsky.social @nikigervais.bsky.social @dadarmahsa.bsky.social academic.oup.com/braincomms/a...
academic.oup.com
Investigating links between white matter hyperintensities and menopausal status using robust age-correction methods in UK Biobank
Wezel, Parent et al. investigated white matter hyperintensity volumes across the menopausal transition in the UK Biobank using strict age-matching procedur
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medRxivpreprint @medrxivpreprint.bsky.social · 16/05/2024
Correlating hippocampal and amygdala volumes with neuropathological burden in neurodegenerative diseases using 7T postmortem MRI www.medrxiv.org/content/10.1101/202…
medrxiv.org
Correlating hippocampal and amygdala volumes with neuropathological burden in neurodegenerative diseases using 7T postmortem MRI https://www.medrxiv.org/content/10.1101/2024.05.15.24307354v1
Numerous research groups worldwide have focused on postmortem imaging to bridge the resolution gap b
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bioRxiv Bioengineering @biorxiv-bioeng.bsky.social · 24/01/2024
Postmortem MRI of Tissue Frozen at Autopsy www.biorxiv.org/content/10.1101/202…
biorxiv.org
Postmortem MRI of Tissue Frozen at Autopsy https://www.biorxiv.org/content/10.1101/2024.01.20.576456v1
Introduction: Postmortem MRI provides insight into location of pathology within tissue blocks, enabl
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bioRxivpreprint @biorxivpreprint.bsky.social · 10/10/2025
Effects of Postmortem Intervals on Quantitative MRI in Unfixed and Fixed Swine Brain: Implications for Ex Vivo MRI Applications www.biorxiv.org/content/10.1101/202…
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bioRxiv Neuroscience @biorxiv-neursci.bsky.social · 24/11/2025
Characterization of hippocampal subfields using histology-based annotated postmortem MRI: Lessons for in vivo segmentation II www.biorxiv.org/content/10.1101/202…
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Ian Kremer @wolverinebear.bsky.social · 04/11/2025
Physical activity as a modifiable risk factor in preclinical Alzheimer’s disease www.nature.com/articles/s41... via @natmed.nature.com #Alzheimers #dementia #publichealth #exercise #fitness #geriatrics #GeriSky
nature.com
Physical activity as a modifiable risk factor in preclinical Alzheimer’s disease - Nature Medicine
In cognitively normal older adults at risk for Alzheimer’s dementia, physical inactivity was associated with faster tau protein buildup and cognitive decline.
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Mahsa Dadar @dadarmahsa.bsky.social · 02/09/2025
We are excited to launch The Data Quartet Challenge, recognizing student contributions to projects that integrate data from at least 2 of 4 FRQ supported Quebec Alzheimer’s and Aging cohorts (PREVENT-AD, CIMA-Q, NuAge, TRIAD), with 3 prizes of 5000$ tinyurl.com/3dy899xn
tinyurl.com
The Data Quartet Challenge.pdf
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Bratislav Misic @misicbata.bsky.social · 08/08/2025
Mapping cerebral blood perfusion and its links to multi-scale brain organization across the human lifespan | doi.org/10.1371/jour... How does blood perfusion map onto canonical features of brain structure and function? @asafarahani.bsky.social investigates @plosbiology.org ⤵️
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Bratislav Misic @misicbata.bsky.social · 04/08/2025
Integrating and interpreting brain maps | doi.org/10.1016/j.ti... Imaging and recording technologies make it possible to map multiple biological features of the brain. How can these features be conceptually integrated into a coherent understanding of brain structure and function? ⤵️
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Aliza Brzezinski-Rittner @albrzez.bsky.social · 28/07/2025
Hey #AAIC25 ! Today I'll be sharing our research on the mediating effect of WMH on spontaneous brain activity during aging! 🧠 Join me on poster 430! @ameliemetz.bsky.social @dadarmahsa.bsky.social @yasharneuro.bsky.social @roqamoqa.bsky.social
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Ting Qiu @tingqiu.bsky.social · 22/07/2025
🧾 Poster #487 Data-Driven Characterization of Heterogeneous Brain Atrophy and White Matter Hyperintensity Progression in FTD (Amelie Metz @ameliemetz.bsky.social ) Tuesday, July 29
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Zaki Alasmar @zklsmr.bsky.social · 24/07/2025
Honoured to have been awarded the Vanier Scholarship — pretty psyched about it. Big thanks to everyone who’s helped me get here!
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Mallar Chakravarty @mallarchak.bsky.social · 22/07/2025
Really excited to share this new preprint on the dynamics of alpha-synuclein spreading by Dr. Stephanie Tullo in our group. This was a long term labour of love spanning the pandemic, experimental work, and in silico modelling www.biorxiv.org/content/10.1... See more below ⬇️
biorxiv.org
In vivo and in silico alpha-synuclein propagation dynamics: The role of genotype, epicentre, and connectivity
Synucleinopathies, like Parkinson's disease (PD) are characterized by progressive accumulation and spread of misfolded alpha-synuclein (aSyn) throughout the brain. To improve understanding of disease ...
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National Alzheimer's Coordinating Center @naccdata.org · 10/07/2025
The REC Steering Committee is excited to host multiple opportunities for early career researchers across the #NIAfundedADRC Program to gather at #AAIC2025! RSVP to connect w/other scholars and leaders from #NIA, #NINDS, and the ADRC Program: uwashington.qualtrics.com/jfe/form/SV_...
REC Scholar Events at AAIC 2025

July 27, 2025, 12:15-2:00pmET: ADRC Early Career Networking Luncheon, Metro Toronto Convention Centre Room 808

July 30, 2025, 6:30-8:30pmET: ADRC REC Scholar Reception, Delta Hotel, Parkdale Room (3rd Floor)
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Aperture Neuro @apertureohbm.bsky.social · 27/06/2025
In @ohbmossig.bsky.social's first Open Datasets Special Issue paper, Wearn et al. introduce the OHBM Time Machine, a freely accessible archive of Annual Meeting content on YouTube: doi.org/10.52294/001... @alfiewearn.bsky.social @sitek.bsky.social @sofievalk.bsky.social @stephforkel.bsky.social
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Karen S Wilcox, PhD (she/her) @karenswilcoxphd.bsky.social · 28/06/2025
wonderful opportunity for junior faculty
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Dr Jose Bernal @joseabernal.bsky.social · 17/06/2025
🚨New preprint 🚨 TL;DR Supporting cerebrovascular and mental health, along with staying cognitively engaged, may help preserve brain function and delay cognitive decline and dementia. @dzne.science
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Olivier Parent @oparent.bsky.social · 12/06/2025
After 3 years of "just one more analysis", our work on WMH pathophysiology is finally out! Building on previous post-mortem findings of non-vascular WMHs, we identified a specific signature of neurodegenerative WMHs in vivo using microstructural MRI and normative modeling doi.org/10.1101/2025...
doi.org
Characterizing spatiotemporal white matter hyperintensity pathophysiology in vivo to disentangle vascular and neurodegenerative contributions
White matter hyperintensities (WMHs) are neuroimaging markers widely interpreted as caused by cerebral small vessel disease, yet emerging evidence suggests that a subset may have a neurodegenerative e...
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medRxivpreprint @medrxivpreprint.bsky.social · 27/05/2025
Sex Differences in Vulnerability to Tau Pathology: Impact on Cognitive Decline www.medrxiv.org/content/10.1101/202…
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medRxivpreprint @medrxivpreprint.bsky.social · 04/06/2025
Gray matter microstructure from in-vivo diffusion MRI reflects post-mortem neuropathology severity and clinical progression of Alzheimer's disease www.medrxiv.org/content/10.1101/202…
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medRxivpreprint @medrxivpreprint.bsky.social · 05/06/2025
Vascular risk factors mediate the relationship between education and white matter hyperintensities www.medrxiv.org/content/10.1101/202…
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Mahsa Dadar @dadarmahsa.bsky.social · 30/05/2025
Thanks Mallar! :)
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Steve Smith @fmrib-steve.bsky.social · 29/05/2025
Happy to see my first first-author paper in Imaging Neuroscience (along with @fmrib-karla.bsky.social and @nichols.bsky.social): Characterising ongoing brain aging and baseline effects from cross-sectional data doi.org/10.1162/IMAG...
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Eric Topol @erictopol.bsky.social · 09/05/2025
Parkinson's disease links to ultra-processed foods and pesticides www.nytimes.com/2025/05/07/w... www.nytimes.com/2025/05/07/w... jamanetwork.com/journals/jam...
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Eric Topol @erictopol.bsky.social · 29/04/2025
Chemical additives in plastics (phthalates) and cardiovascular mortality www.thelancet.com/journals/ebi...
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Sylvain Baillet @sylvainbaillet.bsky.social · 29/04/2025
Our Department of Global and Public Health within McGill University School of Population and Global Health is recruiting an Assistant Professor (Tenure Track). Apply now! 👇 mcgill.wd3.myworkdayjobs.com/en-US/McGill...
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Eric Topol @erictopol.bsky.social · 21/04/2025
Reducing the risk of all-cause dementia with intensive blood pressure control, the results of a cluster randomized trial in~34,000 participants. @naturemedicine.bsky.social www.nature.com/articles/s41...
nature.com
Blood pressure reduction and all-cause dementia in people with uncontrolled hypertension: an open-label, blinded-endpoint, cluster-randomized trial - Nature Medicine
In the CRHCP-3 cluster-randomized trial, blood pressure reduction lowered the risk of all-cause dementia by 15% in 33,995 individuals with hypertension.
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Amelie Metz @ameliemetz.bsky.social · 04/04/2025
Hey #ADPD2025 , I'm happy to present our work on characterizing brain atrophy and cerebrovascular pathology in Frontotemporal Dementia subtypes! Tomorrow, April 5, 9:40am, Hall F2, session: Mechanisms and Clinical Trials in FTD, ALS, and Neurodegeneration 02
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Mallar Chakravarty @mallarchak.bsky.social · 22/03/2025
There's a stream of excellent papers in @apertureohbm.bsky.social being published! Check them out: apertureneuro.org Submit your own +code +data +open science +imaging studies+ Quick turnaround, a devoted ed board, and lowest APC around. And you'll support @ohbmofficial.bsky.social share pls!
apertureneuro.org
Aperture Neuro
Enables a diverse approach to sharing and communicating high quality, community-based, open neuroscience research.
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Brain Communications @braincomms.bsky.social · 22/03/2025
Metz et al. report that a study combining MRI brain atrophy and clinical data using machine learning achieved 89% accuracy in classifying frontotemporal dementia subtypes. Please read at:https://buff.ly/uGmX2fg @DadarMahsa @YasharZeighami @sylv_villeneuve @sducharme66
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Amelie Metz @ameliemetz.bsky.social · 22/03/2025
😋 @dadarmahsa.bsky.social @yasharneuro.bsky.social @sylviavilleneuve.bsky.social
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Marc L Seal @parkvillegeek.bsky.social · 20/03/2025
👏 why am I just hearing about this amazing resource? devMSMs: Implementing Marginal Structural Models (MSMs) Structural Modelswith Longitudinal Data github.com/istallworthy...
github.com
GitHub - istallworthy/devMSMs: Tools for using marginal structural models (MSMs) to answer causal questions in developmental science.
Tools for using marginal structural models (MSMs) to answer causal questions in developmental science. - GitHub - istallworthy/devMSMs: Tools for using marginal structural models (MSMs) to answer ...
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Healthy Brains, Healthy Lives @hbhlmcgill.bsky.social · 20/03/2025
Join us for the next edition of Neurogenesis on March 26 at @theneuro.bsky.social, featuring talks by @danasmall.bsky.social and @yasharneuro.bsky.social! Learn more about their research, partake in the Q&A and network with peers at the post-event reception. 🧠 Register now: mcgill.ca/x/iw5
Neurogenesis Speaker Series: March 26, 2025, 4:30-5:30 p.m. at The Neuro.

Dana Small: The Interoceptive Origins of Reward
Yashar Zeighami: Fine-Tuning Neuroimaging Analysis to Reveal Hidden Signals
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Janine Bijsterbosch @janinebijsterbosch.bsky.social · 27/02/2025
Our new registered report by @kaylahannon.bsky.social compared 6 subtyping approaches for depression. Although most had good stability and sensitivity, there was no agreement between resulting patient groupings. Is it time to rethink our approach to depression heterogeneity? doi.org/10.1016/j.bp...
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Mathieu Ferron @mathieuferron.bsky.social · 18/03/2025
Tenure track position in pharmacology or toxicology at McGill, in Montreal!!! www.nature.com/naturecareer...
nature.com
Assistant / Associate Professor (Tenure Track), Department of Pharmacology and Therapeutics - Montréal, Quebec (CA) job with McGill University | 12837963
Faculty of Medicine and Health Sciences – Department of Pharmacology and Therapeutics, Toxicology (L000054
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Shahab Bakhtiari @shahabbakht.bsky.social · 14/03/2025
📢 We have a new #NeuroAI postdoctoral position in the lab! If you have a strong background in #NeuroAI or computational neuroscience, I’d love to hear from you. (Repost please) 🧠📈🤖
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Nikola Stikov @stikov.bsky.social · 13/03/2025
This cookbook is long overdue, and it starts with my favorite Buckheit and Donoho quote! Inspiring work by @jtsense.bsky.social @efratshimron.bsky.social Moritz Zaiss and colleagues link.springer.com/article/10.1...
link.springer.com
MRI acquisition and reconstruction cookbook: recipes for reproducibility, served with real-world flavour - Magnetic Resonance Materials in Physics, Biology and Medicine
MRI acquisition and reconstruction research has transformed into a computation-driven field. As methods become more sophisticated, compute-heavy, and data-hungry, efforts to reproduce them become more...
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Bratislav Misic @misicbata.bsky.social · 11/03/2025
Cerebral blood perfusion across biological systems and the human lifespan | doi.org/10.1101/2025... How does blood perfusion map onto canonical features of brain structure and function? @asafarahani.bsky.social investigates ⤵️
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Vladimir Fonov @vfonov.bsky.social · 10/03/2025
If you were wandering, how variable are human brains? Fresh off the press!
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Aperture Neuro @apertureohbm.bsky.social · 10/03/2025
Fonov and Collins investigate optimal sample sizes for creating representative average anatomical brain templates: doi.org/10.52294/001... @fmri-today.bsky.social @mallarchak.bsky.social @ohbmofficial.bsky.social
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Mahsa Dadar @dadarmahsa.bsky.social · 05/03/2025
jamanetwork.com/journals/jam...
jamanetwork.com
Sex Differences in Longitudinal Tau-PET in Preclinical Alzheimer Disease
This meta-analysis examines whether sex is associated with rate of tau accumulation in the setting of β-amyloid (as measured with positron emission tomography [PET]) and the moderating influence of se...
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Douglas Research Centre @douglasresearch.bsky.social · 27/02/2025
📣 Don't miss the CIC lecture by Nicola Palomero-Gallagher on March 5 @2pm! buff.ly/41ydnNL 📣 Venez participer le 5 mars au séminaire du CIC avec Nicola Palomero-Gallagher @14h! buff.ly/41iWlC3
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Amelie Metz @ameliemetz.bsky.social · 24/02/2025
Excited to share that the first project of my PhD was published in 🧠 @braincomms.bsky.social 🧠 !! We showed that machine learning can effectively differentiate frontotemporal dementia subtypes combining brain atrophy and cognition 🎉 doi.org/10.1093/brai... (1/10)
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Mahsa Dadar @dadarmahsa.bsky.social · 22/02/2025
Frontotemporal dementia subtyping using machine learning, multivariate statistics and neuroimaging academic.oup.com/braincomms/a...
academic.oup.com
Frontotemporal dementia subtyping using machine learning, multivariate statistics and neuroimaging
Metz et al. report that machine learning can effectively differentiate frontotemporal dementia subtypes, combining brain atrophy patterns and cognitive per
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Mahsa Dadar @dadarmahsa.bsky.social · 22/02/2025
Regional Cerebral Atrophy Contributes to Personalized Survival Prediction in Amyotrophic Lateral Sclerosis: A Multicentre, Machine Learning, Deformation‐Based Morphometry Study - onlinelibrary.wiley.com/doi/10.1002/...
onlinelibrary.wiley.com
Regional Cerebral Atrophy Contributes to Personalized Survival Prediction in Amyotrophic Lateral Sclerosis: A Multicentre, Machine Learning, Deformation‐Based Morphometry Study
Objective Accurate personalized survival prediction in amyotrophic lateral sclerosis is essential for effective patient care planning. This study investigates whether grey and white matter changes m.....
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