Computer Assisted Surgery最新文献

{"title":"Three-dimensional fluoroscopic navigation-assisted surgery for tumors in patients with tumor-induced osteomalacia in the bones","authors":"Hiroshi Kobayashi, T. Akiyama, Tomotake Okuma, Yusuke Shinoda, H. Oka, N. Ito, S. Fukumoto, Sakae Tanaka, H. Kawano","doi":"10.1080/24699322.2017.1282044","DOIUrl":"https://doi.org/10.1080/24699322.2017.1282044","url":null,"abstract":"Abstract Purpose: Tumor-induced osteomalacia (TIO) is a rare paraneoplastic syndrome usually caused by phosphaturic mesenchymal tumors. Segmental resection has been recommended for these tumors in the bones because curettage was found to be associated with a high local recurrence rate. Navigation-assisted surgery provides radiological information to guide the surgeon during surgery. No previous study has reported on the efficacy of navigation-assisted surgery for tumors in patients with TIO. Therefore, the present study aimed to evaluate the efficacy of navigation-assisted surgery for tumors in patients with TIO. Methods: The study included seven patients with TIO who were treated between January 2003 and December 2014 at our hospital. All patients underwent surgical treatment with or without the use of a 3-dimensional (3D) fluoroscopy-based navigation system. The laboratory data and oncological outcomes were evaluated. Results: The follow-up period was 8–128 months. The tumors were located at the femur (n = 4), ischium, spine and ilium (n = 1). Of the seven patients, five underwent navigation-assisted surgery and two underwent surgery without navigation assistance. In the two patients who underwent surgery without navigation assistance, a complete cure was not obtained and osteomalacia did not resolve. One of these two patients and the other five patients who underwent navigation-assisted surgery, one patient had incomplete resection due to massive invasion of the tumor into the spinal canal, but five patients achieved complete excision and recovered from osteomalacia. Conclusions: Navigation-assisted surgery using a 3D fluoroscopy-based navigation system is effective for tumors in patients with TIO.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"22 1","pages":"14 - 19"},"PeriodicalIF":2.1,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2017.1282044","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45207818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum","authors":"","doi":"10.1080/24699322.2016.1275268","DOIUrl":"https://doi.org/10.1080/24699322.2016.1275268","url":null,"abstract":"","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"22 1","pages":"9 - 9"},"PeriodicalIF":2.1,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1275268","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47737303","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy of a novel iPod-based navigation system compared to traditional navigation system in total knee arthroplasty","authors":"A. Mullaji, G. Shetty","doi":"10.1080/24699322.2016.1276630","DOIUrl":"https://doi.org/10.1080/24699322.2016.1276630","url":null,"abstract":"Abstract Background: This prospective study aimed to verify the efficacy of a novel, hand-held, iPod-based navigation system in comparison to traditional navigation system for total knee arthroplasty (TKA). Methods: Limb alignment, tibial and distal femoral bone cut thickness and plane were recorded intraoperatively using both iPod-based and traditional navigation system in 36 knees undergoing primary TKAs. Results: Intraoperatively, the iPod-based navigation system showed good to excellent correlation and reliability for tibial and distal femoral bone cut thickness, plane of the femoral cut and limb alignment when compared to the traditional navigation system. Conclusions: Despite its quick registration feature, the iPod-based system has an efficacy similar to traditional navigation system and is a positive step towards making navigation systems for TKA more compact, user-friendly, time and cost-effective.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"22 1","pages":"10 - 13"},"PeriodicalIF":2.1,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1276630","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48214855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of actuation compatibility and homogeneities for MRI-powered ferromagnetic sphere","authors":"Peng Zhang, Wendong Wang, Yikai Shi, Xiaoqing Yuan","doi":"10.1080/24699322.2016.1240312","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240312","url":null,"abstract":"Abstract MR-compatibility actuations have been widely investigated for the development of robot-assisted devices under the magnetic resonance imaging (MRI). Ferromagnetic components of MRI-powered can be manipulated remotely using the magnetic force or torque induced by MRI or magnetic field environment. However, (1) numerical analysis of the related factors, geometry and magnitude, influencing the ferromagnetic components, and (2) field non-homogeneities when placed in a uniform main magnetic field B0 are rarely reported. To address the relationship between magnetic force/torque and parameters, different radii of ferromagnetic spheres are required to exert magnetic force and torque with variable magnetic field. Comparison of the field homogeneities error (FHE) under various locations and parameters was investigated. In this study, we present the equivalent model of magnetic field and compare the magnetic force and torque of ferromagnetic sphere under different conditions and provide a safety distance of drive source (ferromagnetic sphere). The numerical models between parameters are established and significant factors were analyzed. Through various parameters of the ferromagnetic sphere, the performance of the numerical model in the magnetic field was evaluated. Cubic polynomial equations were developed to relate magnetic properties of ferromagnetic sphere with R2  > 0.9506. Field homogeneity was not significantly affected when actuation source was installed in 32 cm away from the isocenter.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"168 - 174"},"PeriodicalIF":2.1,"publicationDate":"2016-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240312","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three-dimensional digitalized virtual planning for saphenous artery flap: a pilot study.","authors":"Yuan Z Zhang, Shu Z Wen, Hui Q Zhang, Ya G Li, Jian M Zhao, Yong Yang","doi":"10.1080/24699322.2016.1209243","DOIUrl":"10.1080/24699322.2016.1209243","url":null,"abstract":"<p><strong>Objective: </strong>Since the 1970s, research and applications on flap and muscle flap had solved many problems in microsurgical reconstruction. However, the traditional flap design is completely dependent on two-dimensional (2D) images. The purpose of this study was to discuss the methods in the visualization of saphenous artery flap by digitalized technique and its applications by digitalized technique.</p><p><strong>Methods: </strong>Two adult fresh cadaver specimens, one male and one female, were subject to radiographic computerized tomography (CT) scanning before and after perfused with lead oxide-gelatine mixture, whose collimation are 0.625 mm (120 kV, 110 mA, 512 × 512 matrix). Through Amira 5.4.1 software, the 2D images in DICOM format were transformed into the 3D models of the entire region. The structures of saphenous artery were observed and the digitized visible models of saphenous artery flap were established through three-dimensional (3D) computerized reconstructions methods from these data using Amira 5.4.1 software. Next six cases of soft-tissue defects of the tibia region, involving the exposure bones underwent contrast-enhanced CT angiography of lower limbs utilizing a 64-row multi-slice spiral CT after median cubital vein injection with Ultravist (3.5 ml/s). 2D images from these data in DICOM format were transformed into computer. The structures of saphenous artery flap were observed and measured using Amira 5.4.1 software. Then, all cases were treated by saphenous artery flap.</p><p><strong>Results: </strong>The 3D reconstructed visible models established from these datasets perfectly displayed the saphenous artery flap anatomy. In six cases, the main trunk and branched of the blood vessels in the designed flap were consistent with the surgical findings. The starting point of the saphenous artery to the average distance of the knee clearance were 119.2 ± 9.6 mm, the average diameter of the saphenous artery from the starting point were 1.5 ± 0.3 mm. The range of flap was 8.0 × 5.0 cm to 20.0 × 8.0 cm. All flaps survived well. After 8-24 months' follow-up the knee flexion was 120-140°, the straight 0-10°. There was no case appeared incision infection.</p><p><strong>Conclusions: </strong>The preoperative use of 3D digitalized virtual planning for the saphenous artery flap improves the surgical accuracy, decreases the operation time and increases the survival rate of the flap.</p>","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"102-106"},"PeriodicalIF":1.5,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum.","authors":"","doi":"10.1080/24699322.2016.1218199","DOIUrl":"https://doi.org/10.1080/24699322.2016.1218199","url":null,"abstract":"","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"i"},"PeriodicalIF":1.5,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144041623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Force–torque intraoperative measurements for femoral shaft fracture reduction","authors":"Qing Zhu, B. Liang, Xingsong Wang, Xiaogang Sun, Liming Wang","doi":"10.1080/24699322.2016.1240311","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240311","url":null,"abstract":"Abstract Background: The minimally invasive technique of closed intramedullary (IM) nailing fixation is currently considered the standard of treatment for the operative management of displaced traumatic fractures of the femur, with fracture reduction and repositioning being the first and most important step of the procedure. Skeletal-muscle traction and alignment of the fracture fragments are always performed as individual components of the reduction and repositioning phase of the procedure. Methods: As use of high traction force and repositioning forces and torques can cause additional soft tissue injury, we developed a sensor-based system to monitor these forces and torques during the treatment of diaphyseal fractures of the femur, including the monitoring of traction forces during the entire procedure, from reduction to IM nail implantation and fixation. Results: Based on a local coordinate system localized at the center of the fracture, maximum forces of 203 N along the medial-lateral (X) axis, 517 N along the anterior–posterior (Y) axis and 505 N along the shaft of the femur (Z-axis) were identified, with maximum torques of 16.4 Nm calculated around Y-axis and 38.3 Nm around X-axis. The pressure between the counteraction post and the perineum was also recorded, with magnitudes as high as 523 N being recorded. Excessive forces were identified and the difference in force–torque magnitudes during different stages of the reduction and fixation procedure were calculated. Conclusion: The measurement system provides surgeons with real-time information which can assist them in performing effective repositioning of fracture fragments within safe margins of applied forces and torques.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"37 - 44"},"PeriodicalIF":2.1,"publicationDate":"2016-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240311","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126322","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A method of lumbar pedicle screw placement optimization applied to guidance techniques","authors":"Chen Xiaozhao, Hu Jinfeng, Mao Baolin, Yan Chongnan, K. Yan","doi":"10.1080/24699322.2016.1240301","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240301","url":null,"abstract":"Abstract Pedicle screws are an established method for spinal segmental fixation. To pursue high accuracy and minimally invasive, various different guidance techniques have developed. However, the preoperative screw position plans are determined by manual selection which demands complex operations and costs a lot of time. In addition, the current paths planning only consider the position, without taking the postoperative screws retention into consideration. In order to solve the problems, a new method was proposed to plan the lumbar pedicle screw placement automatically. Firstly, identify pedicle area and establish initial path based on the current vertebrae segmentation technology. After that, optimize path via the improved boundary limited Nelder–Mead simplex algorithm, and get the highest firmness path in theory. We considered that both the accuracy of position and the firmness of postoperative screws, achieved a fully automatic optimal path planning, which can effectively assist operators, improve the firmness of screw placement.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"142 - 147"},"PeriodicalIF":2.1,"publicationDate":"2016-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240301","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Free vibration model and theoretical solution of the tympanic membrane","authors":"Can Wu, Ying Chen, M. Al-Furjan, Jing Ni, Xiao Yang","doi":"10.1080/24699322.2016.1240315","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240315","url":null,"abstract":"Abstract Myringoplasty is one of the routine surgeries in the treatment of tympanic membrane (TM) perforation. Since the gross anatomical structure of the middle ear cannot be simulated in clinical practice, the surgery is mainly performed by experience and expertise. Based on the mechanical properties of TM, four hypotheses are presented where TM is simplified as a sectorial annulus membrane. This paper proposes a free vibration model of TM whose natural frequency of free vibration and the analytical expressions of corresponding natural vibration mode are obtained by variables separation method and Bessel function. Compared with the ANSYS numerical results, it shows that natural frequency calculated by finite element (FE) method is slightly higher because of the increase of model stiffness by ignoring high-order quantity. Compared with the experimental data from volunteers, it shows that the first-order, second-order and third-order principal resonances in the test are the combined effects of multiple natural frequencies and natural vibration modes instead of the single one. The theoretical model deduced in this paper is in higher precision with comparatively fewer parameters. It provides more precise mechanical reference to myringoplasty by calculating the response of the normal human ear.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"61 - 68"},"PeriodicalIF":2.1,"publicationDate":"2016-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240315","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60125985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Master–slave real-time control strategy in Cartesian space for a novel surgical robot for minimally invasive surgery","authors":"Bo Pan, Xiaofeng Qu, Yue Ai, Yili Fu, Chang Liu","doi":"10.1080/24699322.2016.1240316","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240316","url":null,"abstract":"Abstract Robot-assisted systems can enhance the precision of surgical procedures, and have been widely used in minimally invasive surgery (MIS). This paper proposes the master–slave real-time control strategy for a novel surgical robot for MIS. The robot is equipped with two instrument manipulators and one laparoscope manipulator. The control strategy solves problems of kinematics transformation on consistency principle, intra-operative re-mapping and tremor attenuation in real-time. The kinematics model of slave instrument manipulators is established, and the master–slave control method in Cartesian space is proposed. Intra-operative re-mapping and real-time tremor attenuation algorithms are also proposed as auxiliary functions to improve surgical robot’s performance. The proposed methods are verified by respective experiments. Finally, animal experiment is performed to verify the correctness and efficiency of the control strategy in this research.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"36 1","pages":"69 - 77"},"PeriodicalIF":2.1,"publicationDate":"2016-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240316","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60125999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}