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Xu C, Roddan A, Xu H, Stamatia G. FF-ViT: probe orientation regression for robot-assisted endomicroscopy tissue scanning. Int J Comput Assist Radiol Surg 2024; 19:1137-1145. [PMID: 38598141 DOI: 10.1007/s11548-024-03113-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Accepted: 03/11/2024] [Indexed: 04/11/2024]
Abstract
PURPOSE Probe-based confocal laser endomicroscopy (pCLE) enables visualization of cellular tissue morphology during surgical procedures. To capture high-quality pCLE images during tissue scanning, it is important to maintain close contact between the probe and the tissue, while also keeping the probe perpendicular to the tissue surface. Existing robotic pCLE tissue scanning systems, which rely on macroscopic vision, struggle to accurately place the probe at the optimal position on the tissue surface. As a result, the need arises for regression of longitudinal distance and orientation via endomicroscopic vision. METHOD This paper introduces a novel method for automatically regressing the orientation between a pCLE probe and the tissue surface during robotic scanning, utilizing the fast Fourier vision transformer (FF-ViT) to extract local frequency representations and use them for probe orientation regression. Additionally, the FF-ViT incorporates a blur mapping attention (BMA) module to refine latent representations, which is combined with the pyramid angle regressor (PAR) to precisely estimate probe orientation. RESULT A first of its kind dataset for pCLE probe-tissue orientation (pCLE-PTO) has been created. The performance evaluation demonstrates that our proposed network surpasses other top regression networks in accuracy, stability, and generalizability, while maintaining low computational complexity (1.8G FLOPs) and high inference speed (90 fps). CONCLUSION The performance evaluation study verifies the clinical value of the proposed framework and its potential to be integrated into surgical robotic platforms for intraoperative tissue scanning.
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Affiliation(s)
- Chi Xu
- Hamlyn Centre for Robotic Surgery Department of Surgery and Cancer, Imperial College London, London, SW7 2AZ, UK.
| | - Alfie Roddan
- Hamlyn Centre for Robotic Surgery Department of Surgery and Cancer, Imperial College London, London, SW7 2AZ, UK
| | - Haozheng Xu
- Hamlyn Centre for Robotic Surgery Department of Surgery and Cancer, Imperial College London, London, SW7 2AZ, UK
| | - Giannarou Stamatia
- Hamlyn Centre for Robotic Surgery Department of Surgery and Cancer, Imperial College London, London, SW7 2AZ, UK
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Cuau L, De Boutray M, Cavalcanti Santos J, Zemiti N, Poignet P. Contactless surface registration of featureless anatomy using structured light camera: application to fibula navigation in mandible reconstruction. Int J Comput Assist Radiol Surg 2023; 18:2073-2082. [PMID: 37270743 DOI: 10.1007/s11548-023-02966-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 05/16/2023] [Indexed: 06/05/2023]
Abstract
PURPOSE Mandibular reconstruction using fibula free flap is a challenging surgical procedure. To assist osteotomies, computer-assisted surgery (CAS) can be used. Nevertheless, precise registration is required and often necessitates anchored markers that disturb the patient and clinical flow. This work proposes a new contactless surface-based method adapted to featureless anatomies such as fibula to achieve a fast, precise, and reproducible registration. METHODS Preoperatively, a CT-scan of the patient is realized and osteotomies are virtually planned. During surgery, a structured light camera digitizes the fibula. The obtained intraoperative point cloud is coarsely registered with the preoperative model using 3 points defined in the CT-scan and located on the patient's bone with a laser beam. Then, a fine registration is performed using an ICP algorithm. The registration accuracy was evaluated comparing the position of points engraved in a 3D-printed fibula with their position in the registered model and evaluating resulting osteotomies. Accuracy and execution time were compared to a conventional stylus-based registration method. The work was validated in vivo. RESULTS The experiment performed on a 3D-printed model showed that execution time is equivalent to surface-based registration using a stylus, with a better accuracy (mean TRE of 0.9 mm vs 1.3 mm using stylus) and guarantee good osteotomies. The preliminary in vivo study proved the feasibility of the method. CONCLUSION The proposed contactless surface-based registration method using structured light camera gave promising results in terms of accuracy and execution speed and should be useful to implement CAS for mandibular reconstruction.
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Affiliation(s)
- Lénaïc Cuau
- LIRMM, University of Montpellier, CNRS, Montpellier, France.
| | - Marie De Boutray
- LIRMM, University of Montpellier, CNRS, Montpellier, France
- Department of Maxillofacial Surgery, Gui de Chauliac University Hospital, Montpellier, France
| | | | - Nabil Zemiti
- LIRMM, University of Montpellier, CNRS, Montpellier, France
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Özsoy U, Yıldırım Y, Karaşin S, Şekerci R, Süzen LB. Reliability and agreement of Azure Kinect and Kinect v2 depth sensors in the shoulder joint range of motion estimation. J Shoulder Elbow Surg 2022; 31:2049-2056. [PMID: 35562032 DOI: 10.1016/j.jse.2022.04.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/05/2022] [Accepted: 04/09/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Depth sensor-based motion analysis systems are of interest to researchers with low cost, fast analysis capabilities, and portability; thus, their reliability is a matter of interest. Our study examined the agreement and reliability in estimating the basic shoulder movements of Azure Kinect, Microsoft's state-of-the-art depth sensor, and its predecessor, Kinect v2, by comparing them with the gold standard marker-based motion analysis system. METHODS In our study, the shoulder joint ranges of motion of 20 healthy individuals were analyzed during dominant-side flexion, abduction, and rotation movements. The reliability and agreement between methods were evaluated using the intraclass correlation coefficient (ICC) and the Bland-Altman method. RESULTS Compared to the gold standard method, the old- and new-generation Kinect showed similar performance in terms of reliability in the estimation of flexion (ICC = 0.86 vs. 0.82) and abduction (ICC = 0.78 vs. 0.79) movements, respectively. In contrast, the new-generation sensor showed higher reliability than its predecessor in internal (ICC = 0.49 vs. 0.75) and external rotation (ICC = 0.38 vs. 0.67) movement. CONCLUSION Compared to its predecessor, Kinect Azure has higher reliability in analyzing movements in a lower range and variability, thanks to its state-of-the-art hardware. However, the sensor should also be tested on multiaxial movements, such as combing hair, drinking water, and reaching back, which are the tasks that simulate extremity movements in daily life.
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Affiliation(s)
- Umut Özsoy
- Akdeniz University, Faculty of Medicine, Department of Anatomy, Antalya, Turkey.
| | - Yılmaz Yıldırım
- Akdeniz University, Faculty of Medicine, Department of Anatomy, Antalya, Turkey
| | - Sezen Karaşin
- Akdeniz University, Faculty of Medicine, Department of Anatomy, Antalya, Turkey
| | - Rahime Şekerci
- Akdeniz University, Faculty of Medicine, Department of Anatomy, Antalya, Turkey
| | - Lütfiye Bikem Süzen
- Antalya Bilim University, Faculty of Dentistry, Department of Anatomy, Antalya, Turkey
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Tang S, Zheng L, Luo Y, Wu R, Tian Q, Wang L. Validation of an MRI Technique for the 6-DOF Knee Kinematics Measurement. Front Bioeng Biotechnol 2022; 10:904012. [PMID: 36601392 PMCID: PMC9806800 DOI: 10.3389/fbioe.2022.904012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 06/09/2022] [Indexed: 01/07/2023] Open
Abstract
Background: For total knee arthroplasty (TKA), the optimal rotational position of the femoral component is felt to be critically important. The current knee joint kinematics measurement technology is unable to identify the exact rotation axis of the knee joint, the main reasons being low measurement accuracy and insufficient three-dimensional data (2D-3D image matching technology). In order to improve the effect of TKA surgery, we proposed a knee joint kinematics measurement method, based on the MRI technology, and verified its measurement accuracy. We then employed this method to identify the personalized optimal rotation axis of the knee joint for TKA patients. Purposes: The purpose of the study was 1) to propose a method for measuring knee joint kinematics and verify its accuracy and 2) to propose a method for determining the optimal rotation axis of knee joint for TKA surgery, based on accurate kinematic measurement results. Materials and Methods: The experiment was divided into two parts: in vitro and in vivo. The purpose of the in vitro experiment was to verify the measurement accuracy of our method. We fixed two aquarium stones (approximately 10 cm * 10 cm * 10 cm in size, close to the size of the distal femur and proximal tibia) firmly on the fixed and moving arms of the goniometer/vernier caliper with glue and immersed the aquarium stones in the water to capture MRI images. The MRI images were then processed with MATLAB software, and the relative motion of the two aquarium stones was measured. The measurement accuracy of our method was verified via the scale reading of the moving arm on the goniometer/vernier caliper. In vivo, 36 healthy elderly participants (22 females, 14 males) were recruited from the local community; our method was then employed to measure the relative motion of the tibia and femur and to observe the rollback and screw home motion of the medial/lateral condyle of the femur, which was identified as specific kinematic features of the knee joint. Results: In vitro, all measurements were accurate to <1 mm and <1°. In vivo, all knee measurements showed rollback motion (the rollback distance of the medial femoral condyle was 18.1 ± 3.7 mm and that of the lateral condyle was 31.1 ± 7.3 mm) and screw home motion. Conclusion: In the application scenario of knee joint kinematics measurement, our method has an accuracy of <1° of rotation angle and <1 mm of translation for all reference points, and it can be employed to identify the most stable axis of the knee joint. Significance: Using our method to accumulate data on the knee rotation axis of more subjects to establish an average rotation axis of a given population may help in knee prosthesis design and reduce the patient dissatisfaction rate. Individually measuring the patient's rotation axis before TKA surgery and adjusting the prosthesis installation in TKA may further reduce the patient dissatisfaction rate, and automatic computer measurement may be realized in the future, but it is still time-consuming for now.
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Affiliation(s)
- Shixiong Tang
- Department of Radiology, The Second Xiangya Hospital, Central South University, Changsha, China,Clinical Research Center for Medical Imaging in Hunan Province, Changsha, China
| | - Liwen Zheng
- Department of Rehabilitation, The Second Xiangya Hospital, Central South University, Changsha, China,*Correspondence: Liwen Zheng,
| | - Yongheng Luo
- Department of Radiology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ren Wu
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Qunyan Tian
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Lei Wang
- School of Information Science and Engineering, Central South University, Changsha, China
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Zhu J, Su Y, Liu Z, Liu B, Sun Y, Gao W, Fu Y. Real‐time biomechanical modelling of the liver using LightGBM model. Int J Med Robot 2022; 18:e2433. [DOI: 10.1002/rcs.2433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 05/19/2022] [Accepted: 06/04/2022] [Indexed: 11/05/2022]
Affiliation(s)
- Jiahua Zhu
- State Key Laboratory of Robotics and System School of Life Science and Technology Harbin Institute of Technology Harbin China
| | - Yixian Su
- State Key Laboratory of Robotics and System School of Life Science and Technology Harbin Institute of Technology Harbin China
| | - Ziteng Liu
- State Key Laboratory of Robotics and System School of Life Science and Technology Harbin Institute of Technology Harbin China
| | - Bainan Liu
- State Key Laboratory of Robotics and System School of Life Science and Technology Harbin Institute of Technology Harbin China
| | - Yu Sun
- State Key Laboratory of Robotics and System School of Life Science and Technology Harbin Institute of Technology Harbin China
| | - Wenpeng Gao
- State Key Laboratory of Robotics and System School of Life Science and Technology Harbin Institute of Technology Harbin China
| | - Yili Fu
- State Key Laboratory of Robotics and System School of Life Science and Technology Harbin Institute of Technology Harbin China
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Ishida K, Shibanuma N, Hayashi S, Kurosaka M, Kuroda R, Matsumoto T. Robotic arm‐assisted posterior‐stabilised total knee arthroplasty reduces the amount of tibial bone resection thickness without increasing the rate of postoperative flexion contracture in varus knees in the short term: Comparison with image‐free navigated total knee arthroplasty. Int J Med Robot 2022; 18:e2370. [DOI: 10.1002/rcs.2370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 01/26/2022] [Accepted: 01/26/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Kazunari Ishida
- Department of Orthopaedic Surgery Kobe Kaisei Hospital Kobe Japan
| | - Nao Shibanuma
- Department of Orthopaedic Surgery Kobe Kaisei Hospital Kobe Japan
| | - Shinya Hayashi
- Department of Orthopaedic Surgery Kobe University Graduate School of Medicine Kobe Japan
| | | | - Ryosuke Kuroda
- Department of Orthopaedic Surgery Kobe University Graduate School of Medicine Kobe Japan
| | - Tomoyuki Matsumoto
- Department of Orthopaedic Surgery Kobe University Graduate School of Medicine Kobe Japan
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Nguyen HP, Kim T, Kim S. Markerless registration approach using dynamic touchable region model. Int J Med Robot 2022; 18:e2376. [DOI: 10.1002/rcs.2376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 01/27/2022] [Accepted: 01/29/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Hang Phuong Nguyen
- Department of Electrical, Electronic, and Computer Engineering University of Ulsan Ulsan South Korea
| | - Taeho Kim
- Department of Electrical, Electronic, and Computer Engineering University of Ulsan Ulsan South Korea
| | - Sungmin Kim
- Department of Electrical, Electronic, and Computer Engineering University of Ulsan Ulsan South Korea
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MacAskill M, Blickenstaff B, Caughran A, Bullock M. Revision Total Knee Arthroplasty Using Robotic Arm Technology. Arthroplast Today 2021; 13:35-42. [PMID: 34917719 PMCID: PMC8666608 DOI: 10.1016/j.artd.2021.11.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Revised: 11/04/2021] [Accepted: 11/05/2021] [Indexed: 01/19/2023] Open
Abstract
Total knee arthroplasty (TKA) is a highly successful operation for the treatment of end-stage osteoarthritis of the knee. Increasing use of computer-assisted and robotic-assisted total joint arthroplasty has been shown to improve component position, with short-term studies demonstrating improved survivability in unicompartmental knee arthroplasty. Robotic-assisted technology has been shown to be helpful in revising unicompartmental knee arthroplasty to TKA, as well as hip fusion to total hip arthroplasty, but few have described revision of a primary TKA. This case report describes the use of robotic-assisted technology in revision TKA. Robotic assistance during revision TKA may improve component alignment and increase prosthesis longevity. Future research is needed to investigate the effects on survivorship and cost.
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Affiliation(s)
- Micah MacAskill
- Marshall University, Joan C Edwards SOM, Department of Orthopaedics, Huntington, WV, USA
| | - Baylor Blickenstaff
- Marshall University, Joan C Edwards SOM, Department of Orthopaedics, Huntington, WV, USA
| | - Alexander Caughran
- Marshall University, Joan C Edwards SOM, Department of Orthopaedics, Huntington, WV, USA
| | - Matthew Bullock
- Marshall University, Joan C Edwards SOM, Department of Orthopaedics, Huntington, WV, USA
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