Computer Assisted Surgery最新文献_第9页

A computer-assisted navigation technique to perform bone tumor resection without dedicated software 一种计算机辅助导航技术，在没有专用软件的情况下进行骨肿瘤切除术

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-01-01 DOI: 10.1080/24699322.2016.1253774

C. Zoccali, Christina M. Walter, L. Favale, A. Di Francesco, B. Rossi

{"title":"A computer-assisted navigation technique to perform bone tumor resection without dedicated software","authors":"C. Zoccali, Christina M. Walter, L. Favale, A. Di Francesco, B. Rossi","doi":"10.1080/24699322.2016.1253774","DOIUrl":"https://doi.org/10.1080/24699322.2016.1253774","url":null,"abstract":"Abstract Purpose: In oncological orthopedics, navigation systems are limited to use in specialized centers, because specific, expensive, software is necessary. To resolve this problem, we present a technique using general spine navigation software to resect tumors located in different segments. Materials and Methods: This technique requires a primary surgery during which screws are inserted in the segment where the bone tumor is; next, a CT scan of the entire segment is used as a guide in a second surgery where a resection is performed under navigation control. We applied this technique in four selected cases. To evaluate the procedure, we considered resolution obtained, quality of the margin and its control. Results: In all cases, 1 mm resolution was obtained; navigation allowed perfect control of the osteotomies, reaching the minimum wide margin when desired. No complications were reported and all patients were free of disease at follow-up (average 25.5 months). Conclusions: This technique allows any bone segment to be recognized by the navigation system thanks to the introduction of screws as landmarks. The minimum number of screws required is four, but the higher the number of screws, the greater the accuracy and resolution. In our experience, five landmarks, placed distant from one another, is a good compromise. Possible disadvantages include the necessity to perform two surgeries and the need of a major surgical exposure; nevertheless, in our opinion, the advantages of better margin control justify the application of this technique in centers where an intraoperative CT scanner, synchronized with a navigation system or a dedicated software for bone tumor removal were not available.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"28 1","pages":"166 - 171"},"PeriodicalIF":2.1,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1253774","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126183","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}

引用次数: 1

How does adding anatomical landmarks as fiducial points in the point-matching registration of neuronavigation influence registration accuracy? 在神经导航点匹配配准中加入解剖地标作为基准点对配准精度有何影响?

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-01-01 DOI: 10.1080/24699322.2016.1180429

Manning Wang, Zhijian Song

引用次数: 6

Application of preoperative registration and automatic tracking technique for image-guided maxillofacial surgery 图像引导颌面外科手术术前配准与自动跟踪技术的应用

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-01-01 DOI: 10.1080/24699322.2016.1187767

Wenbin Zhang, Xudong Wang, Jianfei Zhang, G. Shen

{"title":"Application of preoperative registration and automatic tracking technique for image-guided maxillofacial surgery","authors":"Wenbin Zhang, Xudong Wang, Jianfei Zhang, G. Shen","doi":"10.1080/24699322.2016.1187767","DOIUrl":"https://doi.org/10.1080/24699322.2016.1187767","url":null,"abstract":"Abstract Objective: To investigate the practicality of preoperative registration technique in navigational surgery of facial skeleton. Methods: Five cases were underwent navigational surgery with the preoperative registration technique. The accuracy of registration process was determined, and the deviation between planning model and postoperative computed tomography (CT) model was detected. Results: In each case, the preoperative registration was successful for navigational surgery. Preoperative registration and automatic tracking enabled registration free in the operation procedure. The registration precision measured by the system was less than 0.8 mm. The deviation between the intraoperative anatomy and the CT image was less than 1.5 mm. Conclusions: Preoperative registration technique demonstrates the potential for improved workflow and accuracy in navigational surgery procedures. This technique was found to be particularly advantageous in cases of mandible navigational surgery in which the dynamic reference frame's hard to be fixed.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"137 - 142"},"PeriodicalIF":2.1,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1187767","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60125822","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}

引用次数: 8

Flexible robotic endoscopy: current and original devices 柔性机器人内窥镜:当前和原始设备

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-01-01 DOI: 10.1080/24699322.2016.1242654

K. Kume

引用次数: 17

Effect of soft-tissue impingement on range of motion during posterior approach Total Hip Arthroplasty: an in vivo measurement study 后路全髋关节置换术中软组织撞击对活动范围的影响:一项体内测量研究

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-01-01 DOI: 10.1080/24699322.2016.1223347

N. Nakamura, Y. Maeda, M. Hamawaki, T. Sakai, N. Sugano

{"title":"Effect of soft-tissue impingement on range of motion during posterior approach Total Hip Arthroplasty: an in vivo measurement study","authors":"N. Nakamura, Y. Maeda, M. Hamawaki, T. Sakai, N. Sugano","doi":"10.1080/24699322.2016.1223347","DOIUrl":"https://doi.org/10.1080/24699322.2016.1223347","url":null,"abstract":"Abstract Purpose: While implant impingement and bony impingement have been recognized as causes of poor outcomes in total hip arthroplasty (THA), reports of soft-tissue impingement are rare. To clarify the issue, the effect of anterior capsule resection on hip range of motion (ROM) was quantitatively measured in vivo during posterior approach THA using a CT-based hip navigation system. Materials and methods: For 47 patients (51 hips), hip ROM was measured intraoperatively before and after resection of the anterior hip capsule, and the difference was compared. Results: Resection of the anterior hip capsule brought about an average 6° increase of ROM in the direction of flexion with internal rotation and did not markedly change ROM in other directions. Conclusions: During THA through a posterior approach, soft-tissue impingement by the anterior hip capsule can occur. Clinically, we expect that resection of the anterior hip capsule can reduce the risk of posterior instability without increasing the risk of anterior instability.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"132 - 136"},"PeriodicalIF":2.1,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1223347","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126236","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}

引用次数: 5

Simulation of multi-probe radiofrequency ablation guided by optical surgery navigation system under different active modes 不同主动模式下光学外科导航系统引导下的多探头射频消融模拟

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-01-01 DOI: 10.1080/24699322.2016.1210679

Leyi Xu, Ken Cai, Rongqian Yang, Qinyong Lin, Hongwei Yue, Feng Liu

{"title":"Simulation of multi-probe radiofrequency ablation guided by optical surgery navigation system under different active modes","authors":"Leyi Xu, Ken Cai, Rongqian Yang, Qinyong Lin, Hongwei Yue, Feng Liu","doi":"10.1080/24699322.2016.1210679","DOIUrl":"https://doi.org/10.1080/24699322.2016.1210679","url":null,"abstract":"ABSTRACT Radiofrequency ablation (RFA) is a crucial alternative treatment for liver cancer with the advantages of minimal invasion and a fast prognosis. However, two problems limit its further application: the orientation of the puncture point and the ablation of large tumors. The optical surgery navigation system in the RFA presents a promising approach for solving the localization problem in the puncturing process, which greatly increases puncture accuracy and has overcome the disadvantages of traditional RFA surgery. In addition, the use of multiple electrodes in the RFA (multi-probe RFA) is proposed and is applied clinically to deal with large tumors. In this study, we present a multi-probe RFA model using the finite element method (FEM) combined with a self-developed optical surgical navigation system. A real 3D liver model was adopted as an effective reference. Based on this model, two-probe RFA simulations were performed under different active modes. An analysis was conducted from the perspective of the temperature and electric potential fields and cell necrosis. The simulation results showed that different active modes had separate advantages and were suitable for different situations. Understanding their advantages can not only help doctors make surgical plans that fit the patients’ conditions, but also the understanding can offer a virtual surgery platform for further development in the preoperative planning of RFA incorporated with the surgery navigation system.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"107 - 116"},"PeriodicalIF":2.1,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1210679","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126139","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}

引用次数: 4

Computer-assisted virtual preoperative planning in orthopedic surgery for acetabular fractures based on actual computed tomography data 基于实际计算机断层数据的髋臼骨折骨科手术计算机辅助虚拟术前规划

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-01-01 DOI: 10.1080/24699322.2016.1240235

Guangye Wang, Wen-jun Huang, Q. Song, Y. Qin, Jinfeng Liang

{"title":"Computer-assisted virtual preoperative planning in orthopedic surgery for acetabular fractures based on actual computed tomography data","authors":"Guangye Wang, Wen-jun Huang, Q. Song, Y. Qin, Jinfeng Liang","doi":"10.1080/24699322.2016.1240235","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240235","url":null,"abstract":"Abstract Acetabular fractures have always been very challenging for orthopedic surgeons; therefore, appropriate preoperative evaluation and planning are particularly important. This study aimed to explore the application methods and clinical value of preoperative computer simulation (PCS) in treating pelvic and acetabular fractures. Spiral computed tomography (CT) was performed on 13 patients with pelvic and acetabular fractures, and Digital Imaging and Communications in Medicine (DICOM) data were then input into Mimics software to reconstruct three-dimensional (3D) models of actual pelvic and acetabular fractures for preoperative simulative reduction and fixation, and to simulate each surgical procedure. The times needed for virtual surgical modeling and reduction and fixation were also recorded. The average fracture-modeling time was 45 min (30–70 min), and the average time for bone reduction and fixation was 28 min (16–45 min). Among the surgical approaches planned for these 13 patients, 12 were finally adopted; 12 cases used the simulated surgical fixation, and only 1 case used a partial planned fixation method. PCS can provide accurate surgical plans and data support for actual surgeries.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"160 - 165"},"PeriodicalIF":2.1,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240235","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126292","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}

引用次数: 19

Patient-specific modeling of the trochlear morphologic anomalies by means of hyperbolic paraboloids 利用双曲抛物面对滑车形态异常进行患者特异性建模

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-01-01 DOI: 10.1080/24699322.2016.1178330

P. Cerveri, G. Baroni, N. Confalonieri, A. Manzotti

{"title":"Patient-specific modeling of the trochlear morphologic anomalies by means of hyperbolic paraboloids","authors":"P. Cerveri, G. Baroni, N. Confalonieri, A. Manzotti","doi":"10.1080/24699322.2016.1178330","DOIUrl":"https://doi.org/10.1080/24699322.2016.1178330","url":null,"abstract":"Abstract Diagnostic and therapeutic purposes are issuing pressing demands to improve the evaluation of the dysplasia condition of the femoral trochlea. The traditional clinical assessment of the dysplasia, based on Dejour classification, recognized 4 increasing (A, B, C, D) levels of severity. It has been extensively questioned in the literature that this classification methodology can be defective suggesting that quantitative measures can ensure more reliable criteria for the dysplasia severity assessment. This study reports on a novel technique to model the trochlear surface (TS), digitally reconstructed by 3D volumetric imaging, using three hyperbolic paraboloids (HP), one to describe the global trochlear aspect, two to represent the local aspects of the medial and lateral compartments, respectively. Results on a cohort of 43 patients, affected by aspecific anterior knee pain, demonstrate the consistency of the estimated model parameters with the morphologic aspect of the TS. The obtained small fitting error (on average lower than 0.80 mm) demonstrated that the ventral aspect of the trochlear morphology can be modeled with high accuracy by HPs. We also showed that HP modeling provides a continuous representation of morphologic variations in shape parameter space while we found that similar morphologic anomalies of the trochlear aspect are actually attributed to different severity grades in the Dejour classification. This finding is in agreement with recent works in the literature reporting that morphometric parameters can only optimistically be used to discriminate between the Grade A and the remaining three grades. In conclusion, we can assert that the proposed methodology is a further step toward modeling of anatomical surfaces that can be used to quantify deviations to normality on a patient-specific basis.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"29 - 38"},"PeriodicalIF":2.1,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1178330","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60125679","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}

引用次数: 6

How deep can straight instruments be inserted into the femoral canal: a simulation study based on cadaveric femora* 直器械能插入股管多深:基于尸体股骨的模拟研究*

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-01-01 DOI: 10.1080/24699322.2016.1185466

D. Putzer, S. Klug, J. Moctezuma, E. Mayr, M. Nogler

{"title":"How deep can straight instruments be inserted into the femoral canal: a simulation study based on cadaveric femora*","authors":"D. Putzer, S. Klug, J. Moctezuma, E. Mayr, M. Nogler","doi":"10.1080/24699322.2016.1185466","DOIUrl":"https://doi.org/10.1080/24699322.2016.1185466","url":null,"abstract":"Abstract Determining how deep instruments can be inserted into the femoral canal without touching adjacent structures is a fundamental necessity for navigating instruments in primary and revision total hip arthroplasty. The aim of the study was to determine the reachable depth of a straight instrument inserted into the femur canal during primary and revision total hip arthroplasty. Based on the three-dimensional data of twenty-six femurs, obtained from a CT scan, the insertion depth of a virtual, straight instrument was accessed by a simulation. The effect of the diameter of the virtual instrument and the extension of the osteotomy were evaluated. Without extending the osteotomy, 100% of the femoral canal was reachable to a depth of 5.1–6.3 cm for instruments with a diameter of 10 mm. The depth was measured from the lower edge of the osteotomy. A maximum lateral extension of the osteotomy by 1 cm enlarges the access to a depth of 8.8 cm. The results provide a theoretical basis for the limitations of guiding instruments used for the preparation of the femoral canal. Bone preserving methods need the development of angulated instruments to reach deep areas in the femoral canal.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"56 - 62"},"PeriodicalIF":2.1,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1185466","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60125801","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}

引用次数: 1

High-fidelity haptic and visual rendering for patient-specific simulation of temporal bone surgery 高保真触觉和视觉渲染的患者特定模拟颞骨手术

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-01-01 DOI: 10.1080/24699322.2016.1189966

Sonny Chan, Peter Li, Garrett D. Locketz, K. Salisbury, N. Blevins

{"title":"High-fidelity haptic and visual rendering for patient-specific simulation of temporal bone surgery","authors":"Sonny Chan, Peter Li, Garrett D. Locketz, K. Salisbury, N. Blevins","doi":"10.1080/24699322.2016.1189966","DOIUrl":"https://doi.org/10.1080/24699322.2016.1189966","url":null,"abstract":"Abstract Medical imaging techniques provide a wealth of information for surgical preparation, but it is still often the case that surgeons are examining three-dimensional pre-operative image data as a series of two-dimensional images. With recent advances in visual computing and interactive technologies, there is much opportunity to provide surgeons an ability to actively manipulate and interpret digital image data in a surgically meaningful way. This article describes the design and initial evaluation of a virtual surgical environment that supports patient-specific simulation of temporal bone surgery using pre-operative medical image data. Computational methods are presented that enable six degree-of-freedom haptic feedback during manipulation, and that simulate virtual dissection according to the mechanical principles of orthogonal cutting and abrasive wear. A highly efficient direct volume renderer simultaneously provides high-fidelity visual feedback during surgical manipulation of the virtual anatomy. The resulting virtual surgical environment was assessed by evaluating its ability to replicate findings in the operating room, using pre-operative imaging of the same patient. Correspondences between surgical exposure, anatomical features, and the locations of pathology were readily observed when comparing intra-operative video with the simulation, indicating the predictive ability of the virtual surgical environment.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"101 - 85"},"PeriodicalIF":2.1,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1189966","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60125949","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}

引用次数: 49