| Data Analysis Manager |
The data analysis manager now supports saving custom choices of preprocessing options in json files allowing consistent data preprocessing across projects. Furthermore, the default parameter setting files can be shared with other BrainVoyager users to ensure consistent preprocessing choices in a team or between colleagues in different labs. For details see topic "Default Preprocessing Choices" in the "Data Analysis Management" chapter of the updated User's Guide. |
| MNI Segmentation Templates |
In the previous version, Talairach segmentation templates were used to remove subcortical structures and the cerebellum when running the standard and advanced segmentation pipelines from T1 weighted VMRs transformed in MNI space. For improved subcortical segmentation results, this version provides new segmentation templates that have been created in MNI-152 space. The segmentation templates are installed in the BrainVoyager folder ("BrainMNIMask.vmr" and "BrainMNIMask_0.5mm.vmr" files) and used when segmenting 3D anatomies in normalized MNI space. This change is reflected in the respective "Automatic Cortex Segmentation and Reconstruction" and "Advanced Segmentation Tools" dialogs showing an MNI space option (next to ACPC and TAL) that is automatically turned on when starting the tools from a MNI space VMR. |
| Cortical Depth Grids As Volumes |
Reconstructed cortical depth grids can now be converted into VMR volumes together with any sampled map data by stacking the sampled grids on top of each other. The created VMR and VMP data provides a useful "flattened" volumetric visualization of sub-millimeter MRI depth data from a folded cortical region. The volumetric representation allows, for example, the analysis and visualization of activity along the cortex in two dimensions and across cortical depth in the third dimension. The tool can be launched using the "Export Grid Volume" button in the "Visualization" tab of the "High-Resolution Cortex Grid Sampling" dialog. The resulting volumes can be visualized with the advanced volume rendering tool described above. For details see topic "Depth Grids As Flattened Volumes" in the "Analysis of Sub-Millimeter 7T+ Data" chapter of the updated User's Guide. |
| Mesh VMR Projection |
Projecting a mesh into a VMR has been improved including automatic creation of a VOI overlay instead of directly drawing into the VMR as in previous versions. The VOI color can also be selected from a set of color buttoons before clicking the "Mesh → VMR" button in the "Mesh Transformations" dialog. The "Adjust Origin To VMR" button aligns the center of the mesh to the VMR, which may be necessary in case that the mesh has been transformed from one space to another space (e.g. when using Un-TAL/inverse ACPC transformation into native space with a different number of dimensions). The projection into the hosting VMR can also be controlled using the "Adjust Vertex Coords" option to displace the drawing along the vertex normal. For details of these new options, see topic "Projecting a Mesh in a VMR" in the "Miscellaneous Tools" chapter of the updated User's Guide. |
| Secondary/Tertiary VMR |
In previous versions it was possible to generate, load and save (only for secondary VMR) VMR data sets that are attached to the primary VMR. In this version both secondary and tertiary VMRs can be loaded, saved and removed using the respective entries in the "File" menu. |
| Spatial Transformation |
When applying a spatial transformation, it is assumed that the target space has the same framing cube dimension as the source space. For some transformations such as when transforming a VMR or mesh (e.g. for BBR) from native space to FMR-VTC space, this assumption may be wrong resulting in VMRs and meshes that are displaced with respect to the FMR-VTC space. In order to ensure correct transformations also in such cases, the "Mesh Transformations" and "Transform Native VMR To FMR-VTC Space" dialogs now allow to specify the framing cube dimension of the target space leading to expected transformation results. |
| VOI Visualization |
When selecting and showing different VOIs in the "Volume-Of-Interest Analysis" dialog, the cross in the current VMR data is adjusted to the center of gravity of the selected VOI. While this is usually helpful, it is sometimes desired to keep the slicing constant when switching VOIs. This scenario is now supported by turning off the new "Adjust VMR cross" option before clicking "Show VOIs". |
| Reveal document in Explorer/Finder |
The context menu that is available by right clicking on a documents tab, title bar or document icon in the Open Documents pane helps to quickly launch document specific functionality. The new "Reveal In Finder" (Mac OS X) or "Reveal in Explorer" (Windows) item in the context menu allows to reveal the file location of the respective document in the systems directory tree, i.e. the file location will be marked within an existing or newly opened window in the standard Finder/Explorer of the operating system. This functionality is also available in the "Data" tab of the data analysis manager since BV 20.0. |
| Open Template MNI/TAL VMR |
As a convenience, the two entries "Open MNI VMR" and "Open TAL VMR" have been added to the "File" menu allowing to quickly load a template VMR file in MNI or Talairach space from the "MNITemplates" folder. These VMRs can be, for example, used to visualize multi-subject GLM or ANCOVA results complementing other underlying VMR visualizations such as using the brain of an individual or the result of averaging brains from all participating subjecgts. |
