Neuroimage Analysis Center

Neuroimage Analysis Center
"understanding the human brain through imaging"

Technology Research Development Cores

White Matter Architecture Core

The work of the White Matter Architecture Core is to develop existing and new algorithms that quantify the structural features of white matter architecture in individual and large populations of brains. Under the leadership of Carl-Fredrik Westin, Core PI, current research is exploring methods in diffusion MRI to elucidate structures associated with critical functional pathways that are disrupted in neurogenic diseases, such as schizophrenia. Featured Paper
White matter tracts from diffusion MRI Automatic Tractography Segmentation Using a High-Dimensional White Matter Atlas. More...


fMRI Informatics Core

The fMRI Informatics Core develops statistical methods for the analyzes of functional MRI (fMRI) in populations and for the group-wise registration of large data sets. Under the leadership of Sandy Wells, Core PI, new lines of research include the analysis of multi-modal functional data and studies of the relationship between structure and function, which are used for neurosurgical intervention and other applications that require detailed maps of cortical areas that show these relationships. Featured Paper
The figure illustrates the combination of fMRI and DECS in a surgical case. Quantitative comparison of functional MRI and direct electrocortical stimulation for functional mapping. More...

Clinical Computational Anatomy Core

The Clinical Computational Anatomy Core works to express medical knowledge into forms that researchers and computers can use, including volumetric, geometric, structural, and functional atlases of anatomy. Previous accomplishments of the Core include the development and dissemination of an MRI-based anatomic atlas (the SPL/PNL Brain Atlas) and the publication of a reference book describing the appearance of neural structures in MRI and optical cross sections. Under the direction of Core PI Ion-Florin Talos, the CCA Core is working to develop an integrated anatomic atlas that includes elements of each of these areas:
  • a volumetric brain atlas based on high resolution, multimodality MRI scans of a living, normal subject
  • expert labeling of the anatomic structures imaged in these scans
  • linkage of these labels to established, controlled vocabularies and ontologies of anatomy
  • development of a new functional ontology describing the human motor system and the effect of neurodegenerative diseases such as Parkinson's Disease.

These developments are possible through analysis and editing tools made possible by the NAC. In turn, the atlas and its labels form a foundation upon which other Cores can associate and register their neuroanatomic data.

Featured Paper
A three-dimensional rendering of the SPL-PNL brain atlas. SPL-PNL Brain Atlas. More...

Engineering Core

The overarching goal of the Engineering Core, headed by Core PI Steve Pieper, is to develop and maintain a standard software foundation to support the algorithms developed by the other technology cores. The Engineering Core works closely with other NAC researchers to encourage the translation of research technologies and ideas into robust, sharable tools. The Engineering Core also contributes significantly to the NAC's dissemination, outreach, and training activities by sharing algorithms, distributing software applications and libraries, and helping to teach training workshops.

Engineering responsibilities include:

  • Ensuring File Format Compatibility
  • Defining Coordinate Systems for Analysis
  • Integrating External Tools
  • Packaging Solutions for Dissemination

NAC Engineering draws on personnel with a range of talents from core software engineering and numerical analysis to user interface design and neuroscience application expertise.

Featured Project
Diffusion tensor imaging tractography 3D Slicer. More...

Visualization Core

The NAC Visualization Core, directed by Core PI Michael Halle, works to develop new visualization and interaction tools to improve the usefulness of medical imaging tools. During the first ten years of NAC, the Visualization Core has contributed to the development of Slicer and other visualization tools, as well as developing new techniques for synthetic lighting of visualization scenes (LightKit), user interfaces for navigating flattened versions of anatomy, and tools for the design of stereoscopic images. Beginning in 2007, the Visualization Core will merge with the Clinical Computational Anatomy Core to develop new methods for atlas creation and visualization. Featured Paper
The LightKit offers a natural illumination (right) LightKit: A lighting system for effective visualization. More...