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Fluoroscopic X-ray guidance is a cornerstone for percutaneous orthopaedic surgical procedures. However, two-dimensional observations of the three-dimensional anatomy suffer from the effects of projective simplification. Consequently, many…

Computer Vision and Pattern Recognition · Computer Science 2018-01-08 Sebastian Andress , Alex Johnson , Mathias Unberath , Alexander Winkler , Kevin Yu , Javad Fotouhi , Simon Weidert , Greg Osgood , Nassir Navab

Unsupervised learning for monocular camera motion and 3D scene understanding has gained popularity over traditional methods, relying on epipolar geometry or non-linear optimization. Notably, deep learning can overcome many issues of…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Claudio Cimarelli , Hriday Bavle , Jose Luis Sanchez-Lopez , Holger Voos

Musculoskeletal disorders represent a leading cause of global disability, creating an urgent demand for precise interpretation of medical imaging. Current artificial intelligence (AI) approaches in orthopedics predominantly rely on…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Kang Yu , Dingyu Wang , Zimu Yuan , Nan Zhou , Jiajun Liu , Jiaxin Liu , Shanggui Liu , Yaoyan Zheng , Huishu Yuan , Di Huang , Dong Jiang

A major limitation of minimally invasive surgery is the difficulty in accurately locating the internal anatomical structures of the target organ due to the lack of tactile feedback and transparency. Augmented reality (AR) offers a promising…

Robotics · Computer Science 2024-09-19 Jingwei Song , Ray Zhang , Wenwei Zhang , Hao Zhou , Maani Ghaffari

Background: MRI is the modality of choice for cartilage imaging; however, its diagnostic performance is variable and significantly lower than the gold standard diagnostic knee arthroscopy. In recent years, deep learning has been used to…

Computer Vision and Pattern Recognition · Computer Science 2021-06-24 Gergo Merkely , Alireza Borjali , Molly Zgoda , Evan M. Farina , Simon Gortz , Orhun Muratoglu , Christian Lattermann , Kartik M. Varadarajan

We propose a novel non-rigid image registration algorithm that is built upon fully convolutional networks (FCNs) to optimize and learn spatial transformations between pairs of images to be registered. Different from most existing deep…

Computer Vision and Pattern Recognition · Computer Science 2017-09-05 Hongming Li , Yong Fan

As an essential part of structure from motion (SfM) and Simultaneous Localization and Mapping (SLAM) systems, motion averaging has been extensively studied in the past years and continues to attract surging research attention. While…

Computer Vision and Pattern Recognition · Computer Science 2020-11-03 Xinyi Li , Lin Yuan , Longin Jan Latecki , Haibin Ling

Advanced navigation techniques in image-guided interventions and surgical robotics require the rapid and precise alignment of 3D preoperative volumes (e.g., CT, MRI) to 2D intraoperative images (e.g., X-ray fluoroscopy). However, existing…

Periacetabular osteotomy is a challenging surgical procedure for treating developmental hip dysplasia, providing greater coverage of the femoral head via relocation of a patient's acetabulum. Since fluoroscopic imaging is frequently used in…

Computer Vision and Pattern Recognition · Computer Science 2019-10-31 Robert Grupp , Mehran Armand , Russell Taylor

Purpose: Spinal instability is a widespread condition that causes pain, fatigue, and restricted mobility, profoundly affecting patients' quality of life. In clinical practice, the gold standard for diagnosis is dynamic X-ray imaging.…

Medical Physics · Physics 2026-02-16 Feng Li , Yuan Bi , Tianyu Song , Zhongliang Jiang , Nassir Navab

We propose a novel method for non-rigid 3-D motion correction of orthogonally raster-scanned optical coherence tomography angiography volumes. This is the first approach that aligns predominantly axial structural features like retinal…

Image registration is a fundamental task for medical imaging. Resampling of the intensity values is required during registration and better spatial resolution with finer and sharper structures can improve the resampling performance and…

Image and Video Processing · Electrical Eng. & Systems 2022-01-03 Kaicong Sun , Sven Simon

Robotic systems are transforming image-guided interventions by enhancing accuracy and minimizing radiation exposure. A significant challenge in robotic assistance lies in surgical path planning, which often relies on the registration of…

Image registration is a process of aligning two or more images of same objects using geometric transformation. Most of the existing approaches work on the assumption of location invariance. These approaches require object-centric images to…

Computer Vision and Pattern Recognition · Computer Science 2019-01-14 Deepak Mishra , Rajeev Ranjan , Santanu Chaudhury , Mukul Sarkar , Arvinder Singh Soin

Exudative (wet) age-related macular degeneration (AMD) is a leading cause of vision loss in older adults, typically treated with intravitreal injections. Emerging therapies, such as subretinal injections of stem cells, gene therapy, small…

Markerless pose estimation allows reconstructing human movement from multiple synchronized and calibrated views, and has the potential to make movement analysis easy and quick, including gait analysis. This could enable much more frequent…

Computer Vision and Pattern Recognition · Computer Science 2023-03-09 R. James Cotton , Anthony Cimorelli , Kunal Shah , Shawana Anarwala , Scott Uhlrich , Tasos Karakostas

Intraoperative fluoroscopy is a frequently used modality in minimally invasive orthopedic surgeries. Aligning the intraoperatively acquired X-ray image with the preoperatively acquired 3D model of a computed tomography (CT) scan reduces the…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Pragyan Shrestha , Chun Xie , Hidehiko Shishido , Yuichi Yoshii , Itary Kitahara

As life expectancy is mostly increasing, the incidence of many neurological disorders is also constantly growing. For improving the physical functions affected by a neurological disorder, rehabilitation procedures are mandatory, and they…

X-ray based measurement and guidance are commonly used tools in orthopaedic surgery to facilitate a minimally invasive workflow. Typically, a surgical planning is first performed using knowledge of bone morphology and anatomical landmarks.…

Image and Video Processing · Electrical Eng. & Systems 2019-07-25 Florian Kordon , Peter Fischer , Maxim Privalov , Benedict Swartman , Marc Schnetzke , Jochen Franke , Ruxandra Lasowski , Andreas Maier , Holger Kunze

Osteoarthritis (OA) is a common musculoskeletal condition typically diagnosed from radiographic assessment after clinical examination. However, a visual evaluation made by a practitioner suffers from subjectivity and is highly dependent on…

Computer Vision and Pattern Recognition · Computer Science 2017-04-07 Aleksei Tiulpin , Jérôme Thevenot , Esa Rahtu , Simo Saarakkala