SWAN图谱:整合神经影像与高分辨率组织学的人脑立体定向空间开放多模态资源
The SWAN atlas: an open multimodal resource combining neuroimaging and high-resolution histology of the human brain in stereotactic space
依据bioRxiv预印本摘要,研究团队用高厚度切片切分一整例人脑,将组织学切片配准到该脑自身MRI,再经多步变换归一化到标准立体定向空间,形成SWAN图谱。用户可通过MRI-to-MRI配准把图谱变换到患者空间或反向变换,并用SwanWarp或WarpDrive做进一步非线性精修。
用高厚度切片减少切片形变,将整脑组织学切片配准到自身磁共振并归一化到立体定向空间,提供 SwanWarp 与 WarpDrive 做非线性细化。
Precise localization of human brain regions is critical in clinical practice and population neuroimaging, particularly in stereotactic functional neurosurgery, where small targeting errors may lead to treatment failure. Although MRI provides in vivo and postmortem brain parcellation, histology offers complementary mesoscopic and microscopic information. A major limitation of histological atlases for clinical use is accurate coregistration with in vivo imaging, since tissue processing introduces deformation. To reduce this problem, we sectioned an entire human brain using high-thickness slices, which are less prone to slice-level deformation. Histological sections were registered to the brain's own MRI and normalized to standard stereotactic space through a multistep transform chain. Users can apply MRI-to-MRI registration to transform the atlas into patient space and vice versa, with further nonlinear refinement using SwanWarp or WarpDrive tools. Segmentations and software are being prepared for open distribution. This resource may empower both clinical neurosurgical research and the broader neuroimaging field at large.
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来源:bioRxiv · Neuroscience · biorxiv.org