ATLANTA, Oct. 1 /PRNewswire/ — Elekta recently launched ABAS
2.0 software, which includes the Simultaneous Truth and Performance
Level Estimation (STAPLE) algorithm to increase contouring
accuracy. ABAS—considered the industry gold standard for
autosegmentation accuracy—deforms atlases of anatomy
previously defined on a reference image onto a new patient image,
creating a new structure set fit to the patient anatomy and
enhancing planning efficiency.
“The STAPLE algorithm allows multiple atlases to be calculated
against a single patient,” says Randy Larson, ABAS product manager.
“The benefit is increased accuracy because the user is achieving
the best result for each contour based on multiple sources. ABAS
2.0 also uses a graphics processor unit [GPU], which increases
contouring speed by up to 50 percent. In addition, this release
includes an improved user interface featuring new tools and
functionality, as well as full DICOM service, to enhance workflow
and file maintenance.”
With its deformable registration algorithms, ABAS saves
physician and dosimetrist time by automatically contouring new
image sets based on anatomy defined in the atlas. Users may further
edit and refine the new image sets.
User-definable atlases allow clinicians to select an atlas that
accurately reflects a given patient in a particular clinic. Atlases
also can be patient-specific to account for change in size, shape
or deformation during treatment. The algorithm completes multiple
phases of refinement for increased accuracy.
- Improves efficiency, allowing for treatment of more
- Runs in the background and allows for batch processing
- Seamless workflow integration with multiple vendor
- Improves contouring consistency
“ABAS has been a useful tool to increase contouring