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Development of IR Marker for Thermoplastic Immobilization Tool

Y Kim1*, T Kim2 , M Kim3 , T Suh4 , (1) The Catholic University of Korea, College of Medicine, Seoul, ,(2) The Catholic University of Korea, College of Medicine, Seoul, ,(3) The Catholic University of Korea, College of Medicine, Seoul, ,(4) The Catholic Univerisy of Korea, College of Medicine, Seoul,

Presentations

(Sunday, 7/14/2019)  

Room: ePoster Forums

Purpose: To develop the IR marker for thermoplastic immobilization tool that can detect the movement of the patient surface inside the thermoplastic immobilization tool by using 3D printing technique.

Methods: Modeling of IR marker was performed using 3D modeling software called wings3D. The structure of the IR marker was consisting of a spherical IR marker, a cylinder to be attached to the skin and a disk-shaped structure between IR marker and cylinder. The disk-shaped structure has a number of holes to be combined with the cylinder. This design of disk is to free position of the cylinder so that there is no interference when placing the IR marker on the surface of the body. The modeled IR marker is converted to STereoLithography (STL) file and output to the 3D printer and placed on the thermoplastic immobilization tool to verify that there are no problems.

Results: IR marker for thermoplastic was developed to detect patient surface movement in thermoplastic immobilization tool. The IR marker was modeled using a 3D modeling software and the structure was printed using a 3D printer. When the IR markers were placed on the thermoplastic immobilization tool, we confirmed that it is well located on thermoplastic immobilization tool without any other problems. In addition, although it is not a quantitative evaluation, we have confirmed that the IR marker moves according to the motion of patient.

Conclusion: We have developed IR marker for thermoplastic immobilization tool and the developed IR marker was confirmed to be suitable for our purpose. Further study, we will verify with the stereo vision that the developed IR marker detects movement of the patient surface.

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