Updates:: 

Floating point logged input now is supported in half-beam

OEM-requested change for local CT (restricted non-public access)

File open APIs now allow to share files

Important updates:: 

Supporting the latest nVidia drivers. nVidia drivers starting version 266.66 may be non-compatible

with Cobra GUI versions 7.4.9 and older

 

Fixes:

Z-flip fix (incorrect working when DICOM format is set for the volume)

Improvements: 

Windows 7 64 bit support for HDVR 

Improved z-protrusion correction 

Improved free DICOM viewer: correct volume visualization when volume is non-isotropic

Further protrusion correction improvement when cropping is dynamic or big

 

Fixes:

CFA bug fix (incorrect working when multi-pass)

Vertical discontinuity in multi-pass mode (in some geometry configurations)

Inconsistent post-FFT scaling (controlled by PARTAG_SCALEFACTOR) when croppinng is big

 

Fixes/Improvements of 7.4.3:

More accurate mapping

Improvements: 

Windows 7 64 bit full support 

nVidia Geforce 400 Series support 

Free DICOM viewer

Horizontal FOV improvement. More accurate weighting

(according to amount of rays coming through voxel) and FOV crop

Protrusion correction improvement when cropping is dynamic or big

 

Fixes:

GXM/GPU mode fixes . Missing slices when multipass in the middle and around poles (CPU still does not work properly)

GXM mode improvement. HB added

Fixes:  

GUI sometimes covers taskbar (fixed)

Show extra algorithm is causing blank slices in volumes with z=768 (fixed)

Dynamic collimation does not work when collimated window size varies during the scan (fixed)

Autowater does not work properly when almost no air in the volume (fixed)

Floating point projection preview does not work (fixed)

 

Improvements:

New functionality controlled by new tags  

PARTAG_UNIFSLICELOCATION . Unified slice location 

PARTAG_EXTRAFOVSLICE . Show slice areas beyond FOV in horizontal plane

PARTAG_DET_OFFSET_V_3XEXT. Explicit setup for detector offset in V for the side detector position in 3X mode

PARTAG_STACKEDVOLSEAMLOCATION, Where slice seam is, e.g. 5 means that overlap is 10 slices

Fixes: 

Obligatory DirectX run-time installation even when GPU mode is not used. Fixed.

Auto-scale (auto-water) mode crush when the volume contains more than 1024 slices. Fixed.  

Fixes:  

Incorrect offset file treatment in HB. Fixed.

Improvements: 

GPU-based forward projector (controlled by new tag PARTAG_FP_GPU)- 

CFA now is applied only to relevant voxels (vertical restrain)

Autowater is applied at the end to the whole volume

Fixes:  

GUI sometimes covers taskbar (fixed)

Show extra algorithm is causing blank slices in volumes with z=768 (fixed)

Dynamic collimation does not work when collimated window size varies during the scan (fixed)

Autowater does not work properly when almost no air in the volume (fixed)

Floating point projection preview does not work (fixed)

 

Improvements:

New functionality controlled by new tags  

PARTAG_UNIFSLICELOCATION . Unified slice location 

PARTAG_EXTRAFOVSLICE . Show slice areas beyond FOV in horizontal plane

PARTAG_DET_OFFSET_V_3XEXT. Explicit setup for detector offset in V for the side detector position in 3X mode

PARTAG_STACKEDVOLSEAMLOCATION, Where slice seam is, e.g. 5 means that overlap is 10 slices

New:

Graphical User Interface and User Manual (UM)

High definition visualization.

 

An advanced post-processing edge-preserving smoothing procedure controllable by the following tags       

PARTAG_POSTPROFACTOR (smoothing sigma factor),

PARTAG_POSTPROAPRTHRZ  (smoothing hrz aperture),

PARTAG_POSTPROAPRTVRT  (smoothing vrt aperture),

PARTAG_POSTPROMEDIANAPRT  (median aperture),     

PARTAG_POSTPROINTERCUBESIZE  (intermediate cube size)

See UM Part 2, section 7.6 for additional details.

Controlling pre-processing smoothing by separate introduced  tags       

PARTAG_PREPROSMOOTHFACTOR        (smoothing sigma factor)

PARTAG_PREPROSMOOTHAPRTHRZ      (smoothing hrz aperture),

PARTAG_PREPROSMOOTHAPRTVRT      (smoothing vrt aperture)

See UM Part 2, section 7.4 for additional details.

 

Ring Artifact Reduction post-processing procedure controlled by

PARTAG_DERINGON

See UM Part 2, Section  7.7  Ring Artifact Reduction for details.

 

Wider choice of filter kernels. See section UM Part 2, 7.2 for additional details.

 

Saving compressed DICOM slices

 

Improvement: 

Auto-scale volume calibration controlled by PARTAG_SLICE_AUTOWATER is improved

See UM Part 2, Section  6.23  Dynamic slice scale calibration (also called water adjustment) for details.

 

 Fixes:

- Gamma slice scale was applied incorrectly before.

- GPU reconstruction of slices bigger than 2048 is now supported