Computer Assisted Surgery最新文献_第8页

Control system design for a novel minimally invasive surgical robot 一种新型微创手术机器人的控制系统设计

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-10-28 DOI: 10.1080/24699322.2016.1240313

Yue Ai, Bo Pan, Yili Fu, Shuguo Wang

引用次数: 5

Evaluating environment radiations at Axesse linac undergoing NPC treatment of VMAT 评估Axesse linac接受鼻咽癌治疗的环境辐射

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-10-28 DOI: 10.1080/24699322.2016.1240308

L. F. Chen, H. Tseng, L. Pan, J. B. Lin, H. S. Huang, W. Lai, C. Y. Chen

{"title":"Evaluating environment radiations at Axesse linac undergoing NPC treatment of VMAT","authors":"L. F. Chen, H. Tseng, L. Pan, J. B. Lin, H. S. Huang, W. Lai, C. Y. Chen","doi":"10.1080/24699322.2016.1240308","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240308","url":null,"abstract":"Abstract Environment radiations in vault rooms resulting from Axesse linac use was assessed at Medical University Hospital using Thermoluminescent dosimeters (TLDs) during the use of the new radiation treatment known as volumetric modulated arc therapy (VMAT) in the treatment of nasopharyngeal cancer (NPC). The TLD-100H was calibrated using linac 6 MV photons. A total of 75 measurement points of the TLD-100H were utilized for environmental monitoring. The measured environment radiations were then visualized as three-dimensional graphical representations. Environment radiations were visualized using colored three-dimentional graphical representations. The radiations in NPC treatment of Rando phantom was found to reach levels up to 370 mSv/treatment. Many researchers consider TLD, which is the most cost-effective method to environment radiations. The minimum detectable dose (MDD) was also identified to demonstrate the reliability of the TLD approach. Quantitative results that provide practical guidance with regarded radiation protections. Potentially hazardous of secondary radiations from the operating linac is evaluated with regard to its potential health effects on both patients and the public. KEY POINTS This work tried to evaluate the environment radiation and minimal detectable limit of TLD inside the LINAC maze.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"78 - 82"},"PeriodicalIF":2.1,"publicationDate":"2016-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240308","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126228","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: 3

Space calibration of the cranial and maxillofacial robotic system in surgery 颅颌面外科机器人系统的空间标定

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-10-28 DOI: 10.1080/24699322.2016.1240314

Gangfeng Liu, Xianfu Yu, Chang-le Li, Ge Li, Xuehe Zhang, Liyi Li

{"title":"Space calibration of the cranial and maxillofacial robotic system in surgery","authors":"Gangfeng Liu, Xianfu Yu, Chang-le Li, Ge Li, Xuehe Zhang, Liyi Li","doi":"10.1080/24699322.2016.1240314","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240314","url":null,"abstract":"Abstract Space registration in cranial and maxillofacial surgery is intended to map the image space to the robot space. This requires calibration of multiple coordinate systems. In this process, the calibration accuracy between the robot coordinate system and the NDI vision coordinate system directly determines the precision of the surgical navigation system, which is the key to success. In this paper, the relationship between robot space and visual space is studied according to the requirements of surgery, and with reference to the characteristics of the vision system itself. Based on this analysis and traditional methods, a new linear rotation calibration method is presented. Calibration can be automated to decrease human error and increase the reliability and stability. Finally, an experiment is conducted in order to evaluate the effectiveness of the calibration algorithm. The results show that the minimum position error was less than 0.87 mm and the minimum posture deviation was about 0.83 degrees, indicating that the calibration precision can meet the operation requirements. There are good prospects for this method using in surgical calibration application.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"54 - 60"},"PeriodicalIF":2.1,"publicationDate":"2016-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240314","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60125924","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

Optimal pressure for measuring objective lymphedema with postoperative ultrasonography in patients with breast cancer 乳腺癌术后超声测量客观淋巴水肿的最佳压力

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-10-27 DOI: 10.1080/24699322.2016.1240310

C. Lim, Byungkwan Hwang, Heejung Park, Do-Hong Lee, Jieun Park, Kyu Jin Lee, Sun Kwon Kim, K. Seo

{"title":"Optimal pressure for measuring objective lymphedema with postoperative ultrasonography in patients with breast cancer","authors":"C. Lim, Byungkwan Hwang, Heejung Park, Do-Hong Lee, Jieun Park, Kyu Jin Lee, Sun Kwon Kim, K. Seo","doi":"10.1080/24699322.2016.1240310","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240310","url":null,"abstract":"Abstract Objective: To examine the reliability of ultrasonographic thickness and compressibility along with real-time pressure monitoring to evaluate postmastectomy lymphedema and to suggest a reference range of appropriate pressure. Design: Measurement reliability study. Setting: Research laboratory. Participants: Fifteen patients with prior mastectomy for breast cancer who were diagnosed with secondary lymphedema, and 16 healthy control subjects. Methods: The thickness and compressibility of the subcutaneous layer in the arms of 15 postmastectomy patients with secondary lymphedema were measured using B-mode and M-mode ultrasonography. An ultrasound machine was equipped with a real-time pressure-monitoring device to monitor downward compression pressure on the arms at a constant velocity. The ratio of thickness change defined the compressibility index. Two different experienced examiners participated in the measurement of lymphedema. Intrarater reliability and inter-rater reliability were estimated using the intraclass correlation coefficient. Very good reliability was defined as an ICC of more than 0.8. Main outcome measurements: The thickness of the subcutaneous layer, the compressibility index, and the intrarater and inter-rater reliability were measured. Results: The measured thicknesses demonstrated very good intrarater and inter-rater reliability for the forearm and upper arm. For the compressibility index, the upper arm and forearm had very good intrarater and inter-rater reliability at over 2000 Pa of compression (>0.9). Conclusions: Ultrasonography with real-time pressure monitoring may be useful for evaluating the severity and characteristics of lymphedema, particularly at compression pressures more than 2000 Pa.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"102 - 110"},"PeriodicalIF":2.1,"publicationDate":"2016-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240310","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126308","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: 3

An improved 10-tissue human head model with real anatomical structure and hexahedral discretization feature in magnetic induction measurement simulation 磁感应测量仿真中具有真实解剖结构和六面体离散特征的改进的10组织人头模型

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-10-26 DOI: 10.1080/24699322.2016.1240302

Ziyi Zhang, Peiguo Liu, Dongming Zhou, L. Ding

{"title":"An improved 10-tissue human head model with real anatomical structure and hexahedral discretization feature in magnetic induction measurement simulation","authors":"Ziyi Zhang, Peiguo Liu, Dongming Zhou, L. Ding","doi":"10.1080/24699322.2016.1240302","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240302","url":null,"abstract":"Abstract Magnetic induction measurement (MIM) is a promising technique for biomedical applications in craniocerebral disease detection and monitoring. For the purposes of the MIM simulation, a human head model with real anatomic structure is required. However, nearly anatomically realistic models used in the MIM simulations are discretized using tetrahedral elements of subsequent finite elements method computation. The head model supplied by the Third Military Medical University (TMMU) is currently the only model suitable for hexahedral discretization and finite difference/integral computation. This model has nonetheless number of defects. In order to deal with these, we construct an improved 10-tissue human head model with real anatomical structures and hexahedral discretization features. In this paper, the operation and optimization methods used to construct for the new head model are presented and discussed in detail. We use the 10-tissue head model to conduct the time sensitivity simulation of the magnetic induction sensor which was described in our previous publication and compare the simulation data with those based on the TMMU’s head model. The result shows that the new head model has a higher time sensitivity, meaning better performance in the MIM simulation.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"148 - 153"},"PeriodicalIF":2.1,"publicationDate":"2016-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240302","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126085","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: 2

Fabrication and characterization of disposable wireless electronic endoscope 一次性无线电子内窥镜的制造与表征

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-10-25 DOI: 10.1080/24699322.2016.1240299

Ho Chang, C. Chen, Minghanbo Liu, Li-Ke Chien, Tung-Sun Huang, Bo-Hsiang Tu

{"title":"Fabrication and characterization of disposable wireless electronic endoscope","authors":"Ho Chang, C. Chen, Minghanbo Liu, Li-Ke Chien, Tung-Sun Huang, Bo-Hsiang Tu","doi":"10.1080/24699322.2016.1240299","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240299","url":null,"abstract":"Abstract A wireless electronic endoscope that transmits signals by Wi-Fi is developed for use in single-hole endoscopic surgery and future application to natural orifice surgery. The innovative electronic endoscope developed in this study has a disposable design, completely preventing patents from taking risks of cross infection. The main components of the endoscope are a disposable component of the front tip and the hand-held part of the rear tip. The front tip consists of a lens, metallic tube, and electronic joint whereas the rear tip consists of a power switch, image converter, wireless transceiver chip, and antenna. Experimental applications of the wireless electronic endoscope show that after 3 hours and 30 minutes of normal use, the temperature of metallic tube at the front tip averages 45 °C. Regarding the measured luminance result, when the focal distance is 5 cm, luminance reaches 1410 lux. In an indoor environment, when the measured distance is 3 m and there is no disruptor, the Wi-Fi transmitted signal of the endoscope is at strength −51 dBm. If the disruptor is established between the sending and receiving ends, signal strength is −53 dBm. Increasing the measured distance to 8 m obtains a signal strength of −74 dBm. Test practical applications indicate that the wireless Wi-Fi electronic endoscope fully meets the needs of surgery room.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"124 - 131"},"PeriodicalIF":2.1,"publicationDate":"2016-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240299","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60125981","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

A novel master–slave teleoperation robot system for diaphyseal fracture reduction: a preliminary study 一种新型主从远程操作骨干骨折复位机器人系统的初步研究

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-10-25 DOI: 10.1080/24699322.2016.1240304

Changsheng Li, Tianmiao Wang, Lei Hu, P. Tang, Li-feng Wang, Lihai Zhang, Na Guo, Yiming Tan

引用次数: 18

Automatic guidance of laparoscope based on the region of interest for robot assisted laparoscopic surgery 机器人辅助腹腔镜手术中基于感兴趣区域的腹腔镜自动引导

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-10-25 DOI: 10.1080/24699322.2016.1240309

Lingtao Yu, Hongwei Li, Lingyan Zhao, Sixu Ren, Qing Gu

引用次数: 7

Development of a new characteristic parameter – waveform index of finger blood volume pulse 一种新的特征参数——手指血容量脉搏波形指标的建立

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-10-25 DOI: 10.1080/24699322.2016.1240295

Wen-Jui Wu, Lin Yang, Song Zhang, Dongmei Hao, Yimin Yang, Xuwen Li, Guanghui Wu, Lei Zhang, Z. Luo

{"title":"Development of a new characteristic parameter – waveform index of finger blood volume pulse","authors":"Wen-Jui Wu, Lin Yang, Song Zhang, Dongmei Hao, Yimin Yang, Xuwen Li, Guanghui Wu, Lei Zhang, Z. Luo","doi":"10.1080/24699322.2016.1240295","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240295","url":null,"abstract":"Abstract Background: Finger blood volume pulse (F-BVP) contains abundant human cardiovascular system information, including information regarding circulation in the heart, blood vessel function, and the microcirculation system. Pulse waveform analysis is a method for analyzing F-BVP. Methods and results: A new parameter of F-BVP, called waveform index (WI), was extracted, defined, subsequently compared between groups of different cardiovascular function, and compared with age and systolic blood pressure. WI values of the negative and positive groups were 0.209 ± 0.066 (p < .001) and 0.305 ± 0.066 (p < .001), respectively. The classification threshold value of WI was 0.24, revealing a sensitivity of 77%, a specificity of 68% and a classification accuracy of 73%. The odds ratio (OR) was 7.164, indicating that subjects with WI >0.24 had a 7.164 times greater risk of suffering from cardiovascular disease than of not suffering from cardiovascular disease. Age and systolic blood pressure had consistent correlation with WI, in addition, WI had the same trend with age and systolic blood pressure. Conclusion: Because WI of F-BVP was determined according to only F-BVP waveform and increases in age and systolic blood pressure, different values of WI represent different cardiovascular physiological conditions. To a certain extent, the changes of WI reflect the changes of human cardiovascular function. Therefore, WI has the potential to be widely used in disease screening and clinical practice.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"21 1","pages":"10 - 6"},"PeriodicalIF":2.1,"publicationDate":"2016-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240295","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60125893","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

Biomedical classification application and parameters optimization of mixed kernel SVM based on the information entropy particle swarm optimization 基于信息熵粒子群优化的混合核支持向量机生物医学分类应用及参数优化

IF 2.1 4区医学

Computer Assisted Surgery Pub Date : 2016-10-25 DOI: 10.1080/24699322.2016.1240300

Mi Li, Xiaofeng Lu, Xiaodong Wang, Shengfu Lu, Ning Zhong

{"title":"Biomedical classification application and parameters optimization of mixed kernel SVM based on the information entropy particle swarm optimization","authors":"Mi Li, Xiaofeng Lu, Xiaodong Wang, Shengfu Lu, Ning Zhong","doi":"10.1080/24699322.2016.1240300","DOIUrl":"https://doi.org/10.1080/24699322.2016.1240300","url":null,"abstract":"Abstract The types of kernel function and relevant parameters’ selection in support vector machine (SVM) have a major impact on the performance of the classifier. In order to improve the accuracy and generalization ability of the model, we used mixed kernel function SVM classification algorithm based on the information entropy particle swarm optimization (PSO): on the one hand, the generalization ability of classifier is effectively enhanced by constructing a mixed kernel function with global kernel function and local kernel function; on the other hand, the accuracy of classification is improved through optimization for related kernel parameters based on information entropy PSO. Compared with PSO-RBF kernel and PSO-mixed kernel, the improved PSO-mixed kernel SVM can effectively improve the classification accuracy through the classification experiment on biomedical datasets, which would not only prove the efficiency of this algorithm, but also show that the algorithm has good practical application value in biomedicine prediction.","PeriodicalId":56051,"journal":{"name":"Computer Assisted Surgery","volume":"7 1","pages":"132 - 141"},"PeriodicalIF":2.1,"publicationDate":"2016-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/24699322.2016.1240300","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60126032","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: 12