Siemens Healthineers Introduces Photon-Counting CT Scanner for Radiation Therapy Planning at ASTRO 2025

Siemens Healthineers unveiled its photon-counting CT scanner designed for radiation therapy (RT) imaging at ASTRO’s 2025 Annual Meeting. Naeotom Alpha.Prime for RT uses a cadmium telluride (CdTe) crystal detector, providing greater image resolution, improved contrast, and additional clinically relevant information—helping pave the way for highly precise therapy.

Highlights:

• Naeotom Alpha.Prime brings photon-counting technology to radiation therapy with high accuracy.
• The system delivers enhanced image contrast and resolution to support confident treatment decisions.
• New scanner complements existing CT portfolio for radiation therapy

CT plays a vital role in RT, offering detailed 3D images of patient anatomy and enabling accurate calculations of how radiation will interact with tissues. This precision is essential for effective dose planning.

Through digital workflow integration, treatment prescriptions and scanning requirements from the Oncology Information System ARIA CORE1 can be transferred directly to Naeotom Alpha.Prime. This automatically selects the appropriate RT scan protocol, streamlining the entire simulation process.

As a result, radiation therapy teams can create more optimized treatment plans from a single scan, improving tumor targeting and overall patient outcomes.

“Photon-counting technology marks a significant leap in radiotherapy imaging. With Naeotom Alpha.Prime for RT, we bring this innovation into clinical practice – allowing for more detailed images providing additional information for treatment planning,” said Gabriel Haras, Head of Cancer Therapy Imaging at Siemens Healthineers. “At Siemens Healthineers, we are committed to expanding access to advanced imaging for radiotherapy teams and their patients, in line with our vision of a world without fear of cancer.”