AiRato Wins the Grand Prize at the “MITANI Business Contest 2025”!

AiRato Inc. , (Headquarters: Sendai City, Miyagi Prefecture;Co-CEOs: Yuto Kimura and Noriyuki Kadoya) which develops and commercializes AI-based radiation therapy treatment planning support software, is pleased to announce that it won the Grand Prize at the “MITANI Business Contest 2025,” held on December 12, 2025.

AiRato’s “AI-Powered Radiation Therapy Treatment Planning Support Service for Cancer” is software designed to reduce planning time and improve quality by automating intensity-modulated radiation therapy (IMRT) treatment planning, a process that has traditionally required several hours of work by highly skilled radiological technologists.

This service leverages AI trained on high-quality treatment planning data accumulated at hospitals across Japan and offers the following features:

• AI-based Automatic Contouring: Automatically generates contours of normal tissues from CT images, enabling highly accurate contour delineation.
• AI-based Automated Treatment Planning Technology: Automatically creates high-quality treatment plans based on contour information of tumors and normal tissues, supporting multiple treatment sites including prostate cancer, head and neck cancer, lung cancer, and cervical cancer.
• AI-based Automated Safety Verification Technology: Predicts the safety of the generated treatment plans and calculates plan complexity as well as gamma pass rates.

As a result, it enables a significant reduction in treatment planning time in clinical settings while delivering high-quality radiation therapy.

About the MITANI Business Contest

The MITANI Business Contest is a competition that invites business plans from startups and other innovative companies across Japan that are at the forefront of transformation. It seeks proposals that adapt to accelerating societal changes driven by technological advancement and contribute to revitalizing the regional economy of Hokuriku and solving local challenges.

The contest is organized by Mitani Sangyo Co., Ltd. (Headquarters: Kanazawa, Ishikawa Prefecture; President & CEO: Tadateru Mitani) and provides support for outstanding business plans, including business matching with companies in the Hokuriku region and tie-ups or alliance partnerships with sponsoring companies.

Future Outlook

• Acceleration of Commercialization and Regional Collaboration: As a benefit of the MITANI Business Contest, AiRato will receive alliance support and business matching opportunities with Mitani Sangyo and sponsoring companies. AiRato will collaborate with medical institutions, universities, and companies in the Hokuriku region to advance the social implementation of its service.
• Development Toward Medical Device Approval: A prototype has already been completed, and validation is currently underway at treatment facilities in Japan and overseas. AiRato aims to obtain medical device approval and achieve a full-scale commercial release within fiscal year 2026.
• Advancement of Technology Development: AiRato will continue to enhance its automated planning and safety verification functions, expanding support to a wider range of cancers and radiation delivery techniques.