Search This Blog

Tuesday, May 6, 2014

Fixed an interesting long term defect in displaying the values of parametric maps, reported by Riccardo Lattanzi.
Expanded layer control dialog to have upto 14 layers (from 10)

Monday, May 5, 2014

FireVoxel Build 138 is released.
Sokoloff parametric models {long, short formula}:  added an Automatic Build Subtest.
Sokoloff models {Short formula, Long formula}:  added user control parameter  "K1 min".  This is designed so user can set a fixed value for fK1, so that K1min = K1max = fK1
This way the design to calculate the Ktrans from the DCE MRI and then transfer it to the Sokoloff model can be realized.

Sunday, May 4, 2014

Open DICOM dialog File Preview:  In Build 137, a defect became apparent when the preview of the DICOM file was all "white".  This is an "uninitialized memory type of error" and might have been presented differently on different systems.
Fixed the problem loading with the DICOM single file provided by Riccardo Lattanzi.
This is unconventional DICOM obtained as a result of image processing
Save RAW dialog box:  added a "state variable" so the last used extension is remembered and offered as a default choice next time when the dialog is opened.
Open RAW dialog box:  added a "state variable" so the last used extension is remembered and offered as a default choice next time when the dialog is opened.

Saturday, May 3, 2014

Fixed the ANALYZE file loading problem:  old legacy datatype=132 was present in the header. This is not a part of ANALYZE 7.5 implementation.  So it was added as legacy type and the file is loading now.

Thursday, May 1, 2014

Completely Re-engineering K-trans model with 3 parameters {K-trans,Ve,Va}...
Completely re-engineering the 2-parameter K-trans model  {K-trans,Ve}.  Will verify on the MR4D from the PET-MR exam...

Wednesday, April 30, 2014

Major work finished, re-enabling and verifying the Automatic Build Test after partial phaseout of 24-bit processing.

Tuesday, April 29, 2014

Zoom-to-Display functionality:  converting internal processing from 24-bit  to 32-bit for simplicity and speed.

Monday, April 28, 2014

MR4D (from combined PET-MR exam):
Verifying the "K-trans model" = {K-trans, Ve}.  Adding a corresponding subtest to ABT....
Registration defect  fixed:  while registering two longitudal MPRAGE images, the registration crashes if one of 3 measures is used:  {SignalDiff, CrossCorrelation, RatioUniformity}


Added the ABT subtest for  sag1.im<->sag4.im registration for 5 additional measures:
  {SignalDiff, CrossCorrelation, RatioUniformity,MI,MI-norm}

Fixed the volume overlay problem, when 2 brain volumes with the resolution difference around
1e-4 were not able to overlay.
PET-MR  registration:  Removing optional  "PET resolution\Best resolution" option as it always to the best resolution now due to the new codec.

Thursday, April 24, 2014

Verifying the ABT (automatic build test) due to the changes related to the NN-codec.