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Version 6.9.42Change related to one of custom solutions. Non-relevant for publicly documented features Version 6.9.41Bug fix: Multipass CPU fix. Related to reconstruction big cubes (not fitting to memory as "one portion") on CPU. Version 6.9.40Improvements: Treatment of value set by OPTTAG_3DBUFFERSIZE has been improved. This tag can be set to any value. Defines the desired size of used 3D reconstruction buffer (in MB). Also relevant for graphics card RAM (see section 6.8 of the user manual) Utilization of multiple graphics processors (GPU). New tag OPTTAG_ENGINEQTY. The tag defines the number of GPU installed and used. See also section 6.8 of the user manual New reconstruction mode called 3-x view has been introduced. In this mode every volume scan is a combinations of two 360-degrees scanner gantry (or rotational table) revolutions. The first revolution is being made with the detector in a standard central (relatively axis of rotation) position. The second revolution (might be done in opposite direction) is being made with the detector in offset position (see section 6.15 of the user manual). It allows expanding a field of view diameter by factor 3 (vs. standard detector central position) New stacked volume algorithm is available; PARTAG_STACKEDVOLMODE has been introduced (see section 6.18). When is set to 1 then subvolumes are being adjusted by translation and rotation. When is set to 0 then only translation is being used in alignment process. New advanced noise-reduction preprocessing filter option has been introduced. Controlled by the tag OPTTAG_VRTSMOOTH. See also section 8.4.2 of the user manual. Reconstructed volume auto detect option. If the reconstructed volume is not defined by User (for example, in XXM file) then the automatic settings are applied. Automatically calculated output volume fits the reconstructed field of view; its resolution is ~30% less than the finest theoretical resolution defined by the detector pitch size. See also section 6.22 of the user manual. Shepp-Logan preprocessing filter has become a default option (instead of a ramp filter). This is a customers’ request. Dynamic cropping mode. If the scanner hardware has an option to make a dynamic control of collimator blades then non-co-axial partial field of view can be reconstructed. Please contact Exxim (info@exxim-cc.com) for details. Faster extended mode (Half-beam) reconstruction. Tag PARTAG_FASTEXTVIEW has been untroduced. See also section 6.9. Direct reconstruction of .CAT files. Please contact Exxim (info@exxim-cc.com) for details. Version 6.8.2Improvements: Stacked volume mode. Stacked volume mode allows to stack several (from 2 to 12) cylindrical sub-volumes one on top of the other, thus increasing the effective detector size in V. Several scans must be performed and the object should be moved in vertical z-direction between the scans. See also section 6.18 of the user manual. Dynamic slice scale calibration. We also call it water adjustment. Allows aligning density profiles automatically. Also compensates cupping and doming artifacts. Controlled by the tag PARTAG_SLICE_AUTOWATER. See also section 6.23 of the user manual. Version 6.3.20Bug fix: In multiple configuration SAR, MAR, CFA, DICOM, slice flip, half-beam, etc did not work properly together. Fixed Version 6.3.9Bug fix: MAR and half-beam sometimes did not work simultaneously. Fixed Version 6.3.8Bug fix: SAR and MAR sometimes did not work simultaneously. Fixed Version 6.3.7Bug fix: Forward Projector (a.k.a. reprojector) was accidentally compiled in debug mode. Fixed Version 6.3.6Bug fix: In some modes version 6.3.5 does not support no-GPU reconstruction.Fixed Version 6.3.5Improvement: Faster conventional (~30%) GPU-based reconstruction Version 6.2.21Improvement: Faster MAR Improvement: Supporting MAR in multi-pass mode Version 6.1.08First official release of version 6. New functionality: COBRA V6 contains optional use of a graphics card accelerator: nVidia GeForce8800GTX See User Manual to learn more. |
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COBRA Version History