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[12 years of Computer-Aided Surgery around the Head : Developments in surgical planning and simulation from a Bern perspective]. HNO 2017; 64:625-9. [PMID: 27138367 DOI: 10.1007/s00106-016-0156-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Over the past years, the multidisciplinary character of the international Computer-Aided Surgery around the Head (CAS-H) symposium has advanced many medical technologies, which were often adopted by industry. In Bern, the synergetic effects of the CAS-H symposium have enabled many experiences and developments in the area of computer-aided surgery. Planning and simulation methods in the areas of craniomaxillofacial surgery and otorhinolaryngology were developed and tested in clinical settings. In the future, further CAS-H symposia should follow, in order to promote the possibilities and applications of computer-assisted surgery around the head.
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Chen Z, Wu B, Zhai X, Bai Y, Zhu X, Luo B, Chen X, Li C, Yang M, Xu K, Liu C, Wang C, Zhao Y, Wei X, Chen K, Yang W, Ta D, Li M. Basic study for ultrasound-based navigation for pedicle screw insertion using transmission and backscattered methods. PLoS One 2015; 10:e0122392. [PMID: 25861053 PMCID: PMC4393101 DOI: 10.1371/journal.pone.0122392] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 02/21/2015] [Indexed: 12/04/2022] Open
Abstract
The purpose of this study was to understand the acoustic properties of human vertebral cancellous bone and to study the feasibility of ultrasound-based navigation for posterior pedicle screw fixation in spinal fusion surgery. Fourteen human vertebral specimens were disarticulated from seven un-embalmed cadavers (four males, three females, 73.14 ± 9.87 years, two specimens from each cadaver). Seven specimens were used to measure the transmission, including tests of attenuation and phase velocity, while the other seven specimens were used for backscattered measurements to inspect the depth of penetration and A-Mode signals. Five pairs of unfocused broadband ultrasonic transducers were used for the detection, with center frequencies of 0.5 MHz, 1 MHz, 1.5 MHz, 2.25 MHz, and 3.5 MHz. As a result, good and stable results were documented. With increased frequency, the attenuation increased (P<0.05), stability of the speed of sound improved (P<0.05), and penetration distance decreased (P>0.05). At about 0.6 cm away from the cortical bone, warning signals were easily observed from the backscattered measurements. In conclusion, the ultrasonic system proved to be an effective, moveable, and real-time imaging navigation system. However, how ultrasonic navigation will benefit pedicle screw insertion in spinal surgery needs to be determined. Therefore, ultrasound-guided pedicle screw implantation is theoretically effective and promising.
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Affiliation(s)
- Ziqiang Chen
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Bing Wu
- Department of Orthopedics, 401st Hospital Center, Qingdao, Shandong Province, PR China
| | - Xiao Zhai
- Graduate Management Unit, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Yushu Bai
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Xiaodong Zhu
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Beier Luo
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Xiao Chen
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Chao Li
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Mingyuan Yang
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Kailiang Xu
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Chengcheng Liu
- Department of Electronic Engineering, Fudan University, Shanghai, PR China
| | - Chuanfeng Wang
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Yingchuan Zhao
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Xianzhao Wei
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Kai Chen
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Wu Yang
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
| | - Dean Ta
- Department of Electronic Engineering, Fudan University, Shanghai, PR China
- * E-mail: (ML); (DT)
| | - Ming Li
- Department of Orthopedics, Changhai hospital affiliated to the Second Military Medical University, Shanghai, PR China
- * E-mail: (ML); (DT)
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