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KMID : 1100520230290030218
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Healthcare Informatics Research
2023 Volume.29 No. 3 p.218 ~ p.227
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Simulation Method for the Physical Deformation of a Three-Dimensional Soft Body in Augmented Reality-Based External Ventricular Drainage
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Koo Kyo-Yeong
Park Tae-Yong
Jeong Hee-Ryeol
Khang Seung-Woo
Ngoc Tran Thi Nguyen
Park Min-Kyung
Kim Myung-Ji
Jung Hyun-Ho
Shin June-Seuk
Kim Kyung-Won
Lee Jeong-Jin
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Abstract
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Objectives: Intraoperative navigation reduces the risk of major complications and increases the likelihood of optimal surgical outcomes. This paper presents an augmented reality (AR)-based simulation technique for ventriculostomy that visualizes brain deformations caused by the movements of a surgical instrument in a three-dimensional brain model. This is achieved by utilizing a position-based dynamics (PBD) physical deformation method on a preoperative brain image.
Methods: An infrared camera-based AR surgical environment aligns the real-world space with a virtual space and tracks the surgical instruments. For a realistic representation and reduced simulation computation load, a hybrid geometric model is employed, which combines a high-resolution mesh model and a multiresolution tetrahedron model. Collision handling is executed when a collision between the brain and surgical instrument is detected. Constraints are used to preserve the properties of the soft body and ensure stable deformation.
Results: The experiment was conducted once in a phantom environment and once in an actual surgical environment. The tasks of inserting the surgical instrument into the ventricle using only the navigation information presented through the smart glasses and verifying the drainage of cerebrospinal fluid were evaluated. These tasks were successfully completed, as indicated by the drainage, and the deformation simulation speed averaged 18.78 fps.
Conclusions: This experiment confirmed that the AR-based method for external ventricular drain surgery was beneficial to clinicians.
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KEYWORD
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Augmented Reality, Ventriculostomy, Surgical Navigation Systems, Computer Simulation, Biomechanical Phenomena
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