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12 results on '"Ho, Justin Di‐Lang"'

2. Interactive Multi‐Stage Robotic Positioner for Intra‐Operative MRI‐Guided Stereotactic Neurosurgery

Author

He, Zhuoliang, primary, Dai, Jing, additional, Ho, Justin Di‐Lang, additional, Tong, Hon‐Sing, additional, Wang, Xiaomei, additional, Fang, Ge, additional, Liang, Liyuan, additional, Cheung, Chim‐Lee, additional, Guo, Ziyan, additional, Chang, Hing‐Chiu, additional, Iordachita, Iulian, additional, Taylor, Russell H., additional, Poon, Wai‐Sang, additional, Chan, Danny Tat‐Ming, additional, and Kwok, Ka‐Wai, additional

Published
2023
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4. Interactive Multi‐Stage Robotic Positioner for Intra‐Operative MRI‐Guided Stereotactic Neurosurgery.

Author

He, Zhuoliang, Dai, Jing, Ho, Justin Di‐Lang, Tong, Hon‐Sing, Wang, Xiaomei, Fang, Ge, Liang, Liyuan, Cheung, Chim‐Lee, Guo, Ziyan, Chang, Hing‐Chiu, Iordachita, Iulian, Taylor, Russell H., Poon, Wai‐Sang, Chan, Danny Tat‐Ming, and Kwok, Ka‐Wai

Subjects
STEREOTAXIC techniques, SOFT robotics, ROBOTICS, NEUROSURGERY, MAGNETIC resonance imaging, IMAGE registration
Abstract

Magnetic resonance imaging (MRI) demonstrates clear advantages over other imaging modalities in neurosurgery with its ability to delineate critical neurovascular structures and cancerous tissue in high‐resolution 3D anatomical roadmaps. However, its application has been limited to interventions performed based on static pre/post‐operative imaging, where errors accrue from stereotactic frame setup, image registration, and brain shift. To leverage the powerful intra‐operative functions of MRI, e.g., instrument tracking, monitoring of physiological changes and tissue temperature in MRI‐guided bilateral stereotactic neurosurgery, a multi‐stage robotic positioner is proposed. The system positions cannula/needle instruments using a lightweight (203 g) and compact (Ø97 × 81 mm) skull‐mounted structure that fits within most standard imaging head coils. With optimized design in soft robotics, the system operates in two stages: i) manual coarse adjustment performed interactively by the surgeon (workspace of ±30°), ii) automatic fine adjustment with precise (<0.2° orientation error), responsive (1.4 Hz bandwidth), and high‐resolution (0.058°) soft robotic positioning. Orientation locking provides sufficient transmission stiffness (4.07 N/mm) for instrument advancement. The system's clinical workflow and accuracy is validated with lab‐based (<0.8 mm) and MRI‐based testing on skull phantoms (<1.7 mm) and a cadaver subject (<2.2 mm). Custom‐made wireless omni‐directional tracking markers facilitated robot registration under MRI. [ABSTRACT FROM AUTHOR]

Published
2024
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7. Shape Tracking and Feedback Control of Cardiac Catheter Using MRI-Guided Robotic Platform—Validation With Pulmonary Vein Isolation Simulator in MRI

Author

Dong, Ziyang, primary, Wang, Xiaomei, additional, Fang, Ge, additional, He, Zhuoliang, additional, Ho, Justin Di-Lang, additional, Cheung, Chim-Lee, additional, Tang, Wai Lun, additional, Xie, Xiaochen, additional, Liang, Liyuan, additional, Chang, Hing-Chiu, additional, Ching, Chi Keong, additional, and Kwok, Ka-Wai, additional

Published
2022
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