Varian's AI contouring for Eclipse treatment planning receives CE mark

May 15, 2026

Varian, a division of Siemens Healthineers, has received the CE mark for its AI contouring capability in the Eclipse treatment planning system.

The integrated software contours more than 200 predefined structures based on CT and MR images, including organs of interest, lymph nodes, and known brain metastases, according to the Siemens. It also provides a standardized starting point for clinician review and refinement, with the aim of improving contour consistency and reducing manual effort in radiation therapy planning workflows, the company said.

Varian will showcase its AI contouring capabilities at the annual congress of the European Society for Radiotherapy and Oncology (ESTRO 2026) 15 to 19 May in Stockholm.

Siemens Healthineers

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$Acute radiation-induced pneumonitis after SBRT (65 Gy, four fractions) in a 53-year-old woman with leiomyosarcoma of the uterus with a left lower lobe metastasis manifesting as a small nodule (not shown). (A) Axial dosimetric reconstruction of a CT image obtained for SBRT planning shows the metastasis receiving the maximal isodose (6500 cGy). (B) Axial CT image obtained 12 months after completion of RT shows focal ground-glass and consolidative opacities confined to the treatment plan (arrow). Note that acute lung injury with SBRT typically manifests later than with conventional RT (i.e., >12 weeks after completion of therapy), and in 25% of patients, the first CT manifestations occur more than one year after completion of RT.$