SlicerRt use cases

Evaluation of deformable registration on delivered dose

Source: Sunnybrook (Lee Chin)

Import CT image, dose map, and structure sets from DICOM-RT
Compute the transform corresponding to target dislocation/deformation from image registration
Apply the transform to structure sets (the outputs are also contour objects)
Compare the DVH of the dose for the original and the transformed structure sets
Perform Dice and Hausdorff contour comparison
Export the deformed contours to DICOM-RT

Source: Young-Bin Cho, Seungjong Oh (PMH)

Import CT images and dose maps from DICOM-RT
Compute the transform corresponding to target dislocation/deformation from image registration
Apply the transform to dose map
Sum the dose values in the registered data sets

Source: Dionne M. Aleman (UofT)

Import CT images, structure sets, and dose maps from DICOM-RT
Convert data into usable data structures
Perform treatment planning optimization
Plot DVHs
Plot colorwash+isodose lines for all image slices
Calculate conformity indices
Do all these in a batch mode on a large amount of data (without user interaction).

Source: John Schreiner, Matthew Marsh, Kevin Alexander (KGH)

Loading a planning image and a planned dose distribution
Load an on-board imager cone beam CT
Register CBCT to planning CT
Load a 3D optical CT scan of the gel, or a 2D scan of the film (measured). Format is 3D vff or a 2D picture format (eg. tiff, could be grayscale or RGB)
Register measured image to CBCT using fiducial marks
Apply dose calibration curves (arbitrary scalar math operations) to measured image, yielding measured dose
Perform a gamma, chi, etc. test between measured dose and planned dose, yielding comparison volume
Extract statistics from comparison volume

Source: Michele Avanzo (Centro di Riferimento Oncologico di Aviano)

Load first phase (planning) CT, dose and structures
Load second phase CT and dose
B-Spline image registration of the first and second phase CT images
Resample second phase dose distribution using the result transformation (having first phase dose as reference)
Accumulate the first phase dose with the transformed second phase dose in a weighted manner (3.125 and 2.667, respectively)
Compute DVH for the target and OARs using the accumulated dose distribution

External Beam Planning: Calculate dose using arbitrary dose computation engines implemented in a variety of languages including Matlab
Image-Guided Radiation Therapy: calculation and export of the daily couch shift/rotation
Batch processing: Conversion of DICOM-RT objects into non-DICOM files; Resampling, structure representation conversion, other processing
Calculation of target structure margins
Brachytherapy multimodality fusion