MAAS-TXIhelper

Total X (X=Body|Marrow|Lymphoid) Irradiation helper, introduced at AAPM 2023

For an overview download the AAPM 2023 poster: Download PDF.

For a step-by-step explanation of using this tool see this TMLI RapidPlan clinical description: PDF, Annex A.

Overview

• supports either: C series / TrueBeam / Halcyon / Ethos

CT concatenation tab: working

Requires Head First Supine superior series with rigid registration to inferior Feet First Supine Series in External Beam Planning

• no plan needed
• default CT slice thickness taken from existing scans but can be resampled
• progress bar is accurate, could take approximately 30 minutes to complete concatenation
• import fully merged CT series from output directory (i.e C:\Temp) when completed

Isocenter Placement tab: not yet working

• will automatically place all beams on full body image set
• will support single isocenter shifts head to foot (X fixed,Y fixed,Z changes)
• will also support additional lateral shifts for wider patients (X changes,Y fixed,Z changes)

Aperture Rotation tab: working

• copy and paste twice the complete plan created in HFS orientation with desired dose distribution head to foot
  • in one plan delete all beams/isocenters that will be treated HFS and the other plan FFS
  • DICOM export the plan that has only the inferior isocenters that is currently in the HFS orientation
• launch this tool, click the Aperture Rotation tab, and selected the exported plan file for aperture rotation
  • after aperture rotation script completes import new plan from subdirectory
  • calculate dose with fixed MUs
  • create a plan sum with superior plan
  • dose should be identical to initial completed plan

Bonus: CT Number Override tab: working

• re-process CT series with desity of a structure overridden or "burned-in"

Final Modifications tab: not yet working

• breaks each isocenter group into separate plan, treatment approves plans and adds needed setup notes