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Tuesday, January 15, 2019

FireVoxel Build 295 is released.

1. FLEXR project : Implemented the Minimum Spanning Tree  for the part-based model derived from the set of Foerstner landmarks.
2.  FLEXR project :  implemented label optimization algorithm on the MST.
3. Added an interna "Current Working Directory" to UserInterfaceOptions, independent from TempDir.
4.  Corrected loading defect of COPD files (ANALYZE) from dir-lab
5. Implemented loading of the landmarks from COPD datasets.

6.  Implemented the Gaussian Radial Basis Function landmark matching (without regularization)
7. Integrated Eigen bsdSvd() procedure for substantial precision improvement.

8. Integrater GRBF into the general landmark workflow. Implemented FlowField reslice.
Tested GRBF on COPD1 dataset with 300 landmarks (Gauss RBF Sigma = 30 mm)

Exhale (Blue) over Inhale (Red)  BEFORE registration

Exhale (green) over Inhale (Red)  AFTER Registration.

Implemented Regularized variant of the GRBF deformation (large sigma = 100mm, lambda=1e-3)

AFTER (left)  vs  BEFORE (right)  same slice Z
9. Corrected DICOM loading defect due to a different internal encoding of the date and daytime inside the DCMTK data structure.

10.  Implemented Gradient Descent and Conjugate Gradient algorithms as a postprocessing for solving the system of Linear equations. Presently used after SVD so that it reduces the RMSE by x10.

11. Corrected defect of CT_BASIC concentration conversion not working in Dynamic Modelling.
12. Introduced an ABT subtest for TOFTS (Model8) on CT.

Friday, January 4, 2019

Build 294B is released.

1. Save Alignment Transform (to *.vtf) - corrected situation when FVX Temporary directory was changed.

2. Added a separate attribute "VTF_Folder" to User Options structure.

3.  Raster Paintbrush dialog:  rename "Parametric Maps" field into "Real Volumes"

2. Updated workflow for registering the Primate Atlas to the selected Monkey reference brain. Changes included:
    a) Using 0-component of the PCA (principal component) conversion of 4D volume.
    b) Using T2-layer as Anatomy for the label map.
    c) Label registration output is generated using Nearest Neighbor interpolation.
    d) Label map is clipped by the provided Atlas Brain Mask.


Thursday, January 3, 2019

FireVoxel 294A is released.

1. Removed the Temporary Folder cleaning upon the FireVoxel exit.  Now User views the Temporary folder size in the User Options dialog box.  User has an option to clean Temporary folder with dedicated button.

Monday, December 17, 2018

FireVoxel 294 is released.

1.  Implemented loading of the superPK files (*.idwc) into the FireVoxel dynamic component module.
2. Implemented an initial version of the MRTM0 model (with the reference function supplied by the superPK).
Reference function loaded from superPK
MRTM0 model fitting starting from time t* (equilibration time).

3. Implemented the MRTM model (using the loaded superPK reference function)


4. "Extract Atlas ROIs":  corrected so that the original Atlas layer is not removed after the operation.

5. Defect correction: In many operations when the layer configuration is modified, so if the floating Layer Control dialog is opened it was not updated leading to the confusion.
6. Extended "Integer Range Parser" support function used in many UI scenarios (f.e. Extract Atlas Layers).


7. Implemented workflow for Affine registration of Primate Atlas to the selected Squirrel Monkey Reference image.


8. Layer control dialog : added information about the number of marked layers. This is helpful when a very large number of layers is present.

9.  When layers are removed and a single layer is left, we set its Alpha to 100%

10.  Added the "Discard Alignment" item to the Transform menu.
11. Added "Save Alignment" function to the Transform menu.

12. UserOptions dialog:  added a general option for all the operations\transform which so far had only the default Interpolation. Now user specifies such "Default Interpolation".  Works including the Transform>Alignment tools.

13. Implemented a general high performance function for converting 4D Volume into array of Principal Component using PCA (resulting in new 4D Volume of components).



Sunday, December 9, 2018

FireVoxel Build 293 is released.

1. NIFTI-4D: Corrected the each frame timing calculation using nim->toffset\nim->dt information.

2. Implemented a custom processing option for DICOM Open Folder dialog box.  Rarely DICOM datasets have SeriesUID unique for each slice, so the option was introduced to parse them correctly.








3.  Defect fixed: In NIFTI file obtained from SPM (type FLOAT64) there were many entries with the value  NotANumber, so this was making Firevoxel crash.  Fixed by changing these values to 0, during the load.

Thursday, November 29, 2018

FireVoxel Build 292 is released.

1.  Several correction and improvements in the Dialog "View TAC"
2.  Major (x10+) acceleration of the saving FVX files with many slices, by improving the saving embedded dicom header structure.  This is done by using new DCMTK functions DcmOutputBufferStream::.
3.  Provided more robust  IsMatchingVolume function (used mainly in ABT).  Problem was that for many 4D volumes, there are one or more dimensions (f.e. time and b-values) with repeating values in the dynamic coordinates.  This introduces randomness in the sorting order of different timepoints, so matching function was often failing without reason.  Addressed randomness by checking against all suitable dynamic coordinates.
4. Restored the ABT subtest and full functionality for the ChestWall\FullBreast segmentation. This was disabled during the upgrade of MagTrace contour tool while constructing the ground truth for the lung segmentation (ISMRM).
5. Implemented the "Display unmarked layers" checkbox inside Layer Control dialog, functionality to display the unmarked entries thus expanding possibilities of working with the Layers.
6. Modified Transform>Translate  and Transform>Rotate function to work on several Marked volumes, while unmarked volumes are stationary.
7. Layer Control dialog:  added  "Mark\Unmark All layer" button.

Wednesday, November 28, 2018

Build 291B is released.

1.  Corrected defects in X-correlation registration dialog
2. Provided individual menu item for the Mouse brain->Atlas registration
3. Provided new functionality to remove a range of dynamic points specified by the User.

Sunday, November 25, 2018

FireVoxel Build 291 is released.

1. AutoFocus 3D: implemented a variant with "af Uniform Scale" option.
2. Implemented 1st version of the Mouse brain (automatically extracted from Multiholder) registration to the standard Atlas.
3.  Corrected binning inside the AutoFocus\MutualInformation registration.
4. Corrected run-away defect with MI_NORM\Affine.




Saturday, October 27, 2018




FireVoxel Build 290 is released.

1.  Fixed error when rasterizing Vector polylines and splines:  now the NULL pen is used so the rasterized boundary is much closer to the vector one.



2. Provided complete re-work of the MagTrace Toolkit:
Added several new image snapping modes, manual modes Alt1,Alt2,Alt3.  Rasterization tools.

3. Added DCMTK functions for loading DICOM headers directly from memory buffer (avoiding the intermediate file creation).  Resulted in x10 loading speedup.

4. Provided an initial version of VIBE4D + GRASP4D hybrid merge function.


FireVoxel Build 289B is released.

1. WM Lesions batch:  corrected defect when NIFTI orientation was not properly written.
     Improved the progress indicator so the name of the currently processed file is displayed.

Friday, October 26, 2018

FireVoxel 289A is released.

WM lesions batch job:  fixed the resolution problem when saving result to .NII file.

Tuesday, October 23, 2018

FireVoxel Build 289 is released.

1. Kidney segmentation FAP:  reduced number of UI parameters.
Adjusted default parameters for good processing of all 6 sets (L+R).

2. Open RAW dialog box:  implemented filter option to open ALL RAW formats (*.im;*.img;*nii;*.nia;*.nii.gz;*.mgh;*.mgz;*.time)

3. New version of Kidney FAP segmentation.

4. Batch processing of FLAIR  WM lesions.

5.  Corrected defect when the resolution of NIFTI saved file turns into (1,1,1)mm

6. RoiStats3D dialog:  added the value of the bin to the info displayed on the MouseMove over the histogram.

Monday, October 22, 2018

1. Kidney segmentation: FAP
Added User constant to extend the height of the kidney bounding box, not exposed on UI.
Effective Bounding box is displayed to the User at the end of procedure to provide feedback.

2.  Completely parallelize multi-slice projections such as MIP.  Added a progress bar since
it takes longer time to display.

3.  Extended Kidney FAP segmentation to include the notion of Collecting System.





Wednesday, October 17, 2018

FireVoxel 288C is released.

1. Kidney segmentation: algorithm modification to remove 99%+ of medulla voxels which accidentally appear on the surface of the kidney.

2.  ROI>Morphology>Inflate\Deflate functionality:  made corrections so the Inflate-Deflate combinations are reversible with the same parameter.  Fixed side-effects in   BrainAtrophy and FLAIR Lesions functions.

Tuesday, October 16, 2018

FireVoxel Build 288A is released.

1 Fixed defect when in KSFAP segmentation there are overlapping voxels 

in the final Cortex vs Medulla masks

Wednesday, October 10, 2018

FireVoxel Build 288 is released.

1.  EdgeWave-2D : implemented a pure 2D function which is very fast, works on a single slice.  It reuses the EdgeWave-3D code.

2. New algorithm for fully automatic MouseHolder segmentation (based on MIP and EdgeWave2D)
3. Implemented automatic rotation of the individual chambers to normal orientation. Youtube video posted.
4.  Implemented UI functions: Close Current Document (All Views)
and Close All Documents.
5. Open Dicom dialog box:  Implemented function to check all Children of the selected item.  Then few undesirable items could be easily unchecked and the rest loaded. Youtube video uploaded.

Thursday, October 4, 2018


FireVoxel Build 287 is released.

1. Implemented the separate volume output for the Rodent Multi-holder segmentation.

2. Implemented EdgeWave Multipass agent for Rodent Multi-holder segmentation.

3. First User version of the MultiHolder segmentation tool with dedicated dialog box
.

Wednesday, October 3, 2018

FireVoxel 286B is released.

1. Fixed the missing top\bottom slices issue in KSFAPv2 and KSFAPv3.

2.  Enabled KSFAPv3 on smaller cropped kidney volumes.

Tuesday, October 2, 2018

FireVoxel Build 286A is released.

Kidney DTI motion correction workflow:  fixed the issue when Mosaic DICOM info is missing so a dialog box pops up
Build 286 is released.

1. Implemented F9 switch between regular projection and MIP projection.
2. Implemented a new workflow KSFAPv3 (kidney segmentation) where User is not required to specify the mid-axial kidney slice and just need to make a bounding rectangle on MIP projection.