Nikos Priovoulos

A new MRI protocol can scan the human brain and its venous network in under 7 minutes at 0.35 mm iso. resolution, marking it as a potential tool for diagnosing cerebrovascular diseases and monitoring neurodegeneration.
scim.ag/3LkRfRY

Whole-brain meso-vein imaging in living humans using fast 7-T MRI In vivo 7-T MRI maps the entire human brain’s veins at high resolution in minutes.

It's the second paper in the same day with mesoscale/UHF/vascular imaging in the title (check out also the new paper of @ofgulban.bsky.social and Dimo Ivanov in Science Advances www.science.org/doi/10.1126/...). A sign of things to come

with Pilou Bazin, Emma Brouwer, @jorgefmejias.bsky.social, @thijsdebuck.bsky.social, Anneke Alkemade, Wietske van der Zwaag and Matthan Caan

We observe a convergent interlobular gradient in cortical thickness and vascular-density. This heterogeneity seems driven by the granular layer cytoarchitecture when comparing to 3D histology. Still work to be done though to further improve SNR and segmentation fidelity.

We show that we can derive measures like cortical thickness aligned to the biological ground-truth —bringing cerebellar imaging closer to the level of detail already available in the cerebrum.

Until recently, getting a reliable in-vivo approximation of the human cerebellar cortex was out of reach.

🎓🧠 It's finally out in @pnas.org 📄
doi.org/10.1073/pnas...
We reconstruct the cerebellar cortex and vasculature in-vivo by combining motion-corrected, pTX-enabled #7T MRI with a new segmentation approach.

New high resolution fMRI paper describing the capabilities and challenges of 9.4T fMRI in the cerebellum.
By van der Zwaag et al., (@highonfield.bsky.social, @nikospriovoulos.bsky.social)

doi.org/10.1002/mrm....

and yet one more: routine cerebellar neuroimaging at 9.4T—no individual B1+ calibration, robust BOLD. A glimpse of what’s to come at even higher fields. in MRM onlinelibrary.wiley.com/doi/10.1002/... with Wietske van der Zwaag, @highonfield.bsky.social‬, Desmond Tse 🎓🧠 #fMRI #cerebellum #9.4T

Easy‐to‐use B1+ shims for human brain imaging at 7 T Purpose B1+$$ {B}_1^{+} $$ field inhomogeneity is a common problem in high field brain MRI (>3$$ >3 $$ T). Parallel-transmit methods that adjust the B1+$$ {B}_1^{+} $$ field channelwise often requi.....

New paper from the amazing Emma Brouwer: humble, group-optimized B1+ shims at 7T can boost or destroy signal where it matters—no subject-specific calibration needed. in MRM doi.org/10.1002/mrm.... @spinozacentre.bsky.social🎓🧠 #MRI #fMRI #Neuroimaging #7T