Tohoku Univ. Technology: Dynamic deformable phantom, method and program for preparing radiation treatment plan:T16-069
Accuracy evaluation of dose aggregation using image deformation technology is possible
In recent years, the development of irradiation equipment capable of pinpoint irradiation by accurately grasping the position of the cancer affected area has advanced, making it possible to perform highly accurate treatment. Deformable image registration (DIR), which is the alignment using images obtained by 4D-CT, etc. is often used to prepare the treatment plan. Although the use of DIR is expected to expand in the future, the accuracy of images obtained as a result of DIR and the accuracy of the calculated combined dose remain controversial. To solve the above problem, the inventors devised a Dynamic deformable phantom that can perform complex movements as if it were a patient's organ, and can insert acrylic markers and dosimeters. The present invention makes it possible to evaluate the combined dose distribution using image deformation techniques. It is possible to accurately evaluate the dose distribution in cases where a treatment plan is to be reformulated or where some irradiation fields overlap between past and present treatments. These effects are expected to improve treatment outcomes and reduce side effects.
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The revenue generated from technology transfer is reinvested as new research funding for universities and researchers, and is utilized to create further research outcomes. To ensure the smooth operation of this cycle, known as the "Intellectual Creation Cycle," we will vigorously promote technology transfer. The types of seeds we handle include patents, know-how, databases, and programs. We have established a collaborative framework by signing basic technology transfer agreements with the following universities (as of June 1, 2025): Tohoku University, Hirosaki University, Iwate University, Akita University, Fukushima University, Yamagata University, Tohoku Gakuin University, Iwate Medical University, Fukushima Medical University, Aizu University, Miyagi University, Hokkaido University, Muroran Institute of Technology, and Showa Medical University.
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