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High-resolution non-line-of-sight (NLOS) imaging under nanosecond time-resolution conditions is challenging in applications. We propose a novel NLOS imaging method consisting of deconvolution modified iterative back projection and virtual modulated range migration for low time-resolution system, obtaining super-resolution (SR) histogram signal and high-resolution NLOS images sequentially. The proposed method is applicable to both confocal and non-confocal configurations.
View Article and Find Full Text PDFAugmented Reality Navigation System Enhances the Accuracy of Spinal Surgery Pedicle Screw Placement: A Randomized, Multicenter, Parallel-Controlled Clinical Trial.
Orthop Surg
January 2025
Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
Objective: The pedicle screw insertion technique has evolved significantly, and despite the challenges of precise placement, advancements like AR-based surgical navigation systems now offer enhanced accuracy and safety in spinal surgery by integrating real-time, high-resolution imaging with virtual models to aid surgeons. This study aims to evaluate the differences in accuracy between novel AR-guided pedicle screw insertion and conventional surgery techniques.
Methods: A randomized controlled trial was conducted from March 2019 to December 2023 to compare the efficacy of AR-guided pedicle screw fixation with conventional freehand surgery using CT guidance.
Time-lapse HR-pQCT reliably assesses and monitors local bone turnover in patients with chronic kidney disease.
J Bone Miner Res
January 2025
Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA, United States.
Bone turnover assessment and monitoring are essential for chronic kidney disease (CKD)-associated bone care. Patients with CKD suffer from significantly elevated fracture risk due to abnormally high or low bone turnover, which requires diametrically opposite treatments informed by patient-specific bone turnover data. However, a reliable, accessible, non-invasive bone turnover assessment and monitoring tool remains an unmet clinical need.
View Article and Find Full Text PDFPreliminary validation of the virtual bariatric endoscopic simulator.
IGIE
December 2024
School of Computer Science, University of Oklahoma, Norman, Oklahoma, USA.
Background And Aims: Obesity is a global health concern. Bariatric surgery offers reliably effective and durable weight loss and improvements of other comorbid conditions. However, the accessibility of bariatric surgery remains limited.
View Article and Find Full Text PDFThree-Dimensional Scanning Virtual Aperture Imaging with Metasurface.
Sensors (Basel)
January 2025
Huawei Technologies Co., Ltd., Chengdu 610000, China.
Metasurface-based imaging is attractive due to its low hardware costs and system complexity. However, most of the current metasurface-based imaging systems require stochastic wavefront modulation, complex computational post-processing, and are restricted to 2D imaging. To overcome these limitations, we propose a scanning virtual aperture imaging system.
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