Vision-based augmented reality computer assisted surgery navigation system

2007 ◽  
Author(s):  
Lei Sun ◽  
Xin Chen ◽  
Kebin Xu ◽  
Xin Li ◽  
Wei Xu
Keyword(s):  
Augmented Reality ◽  
Navigation System ◽  
Computer Assisted Surgery ◽  
Computer Assisted

scholarly journals A Projector-Based Augmented Reality Navigation System for Computer-Assisted Surgery

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 2931
Author(s):  
Yuan Gao ◽  
Yuyun Zhao ◽  
Le Xie ◽  
Guoyan Zheng
Keyword(s):  
Augmented Reality ◽  
Navigation System ◽  
Surgical Navigation ◽  
Computer Assisted Surgery ◽  
Calibration Method ◽  
Gray Code ◽  
Computer Assisted ◽  
Target Area ◽  
Additional Information ◽  
Navigation Information

In the medical field, guidance to follow the surgical plan is crucial. Image overlay projection is a solution to link the surgical plan with the patient. It realizes augmented reality (AR) by projecting computer-generated image on the surface of the target through a projector, which can visualize additional information to the scene. By overlaying anatomical information or surgical plans on the surgery area, projection helps to enhance the surgeon’s understanding of the anatomical structure, and intuitively visualizes the surgical target and key structures of the operation, and avoid the surgeon’s sight diversion between monitor and patient. However, it still remains a challenge to project the surgical navigation information on the target precisely and efficiently. In this study, we propose a projector-based surgical navigation system. Through the gray code-based calibration method, the projector can be calibrated with a camera and then be integrated with an optical spatial locator, so that the navigation information of the operation can be accurately projected onto the target area. We validated the projection accuracy of the system through back projection, with average projection error of 3.37 pixels in x direction and 1.51 pixels in y direction, and model projection with an average position error of 1.03 ± 0.43 mm, and carried out puncture experiments using the system with correct rate of 99%, and qualitatively analyzed the system’s performance through the questionnaire. The results demonstrate the efficacy of our proposed AR system.

scholarly journals Integrating a Tracking Camera in the OR Using the IEEE 11073-SDC Communication Standard

10.29007/j83k ◽  
2019 ◽  
Author(s):  
Manuel Vossel ◽  
Matías de La Fuente ◽  
Dario Wieschebrock ◽  
Okan Yilmaz ◽  
Klaus Radermacher ◽  
...  
Keyword(s):  
Navigation System ◽  
Computer Assisted Surgery ◽  
Computer Assisted ◽  
Navigation Systems ◽  
Standard Equipment ◽  
Multiple Systems ◽  
Underlying Network ◽  
Ieee 11073 Sdc ◽  
New Applications ◽  
Ieee 11073

With the increasing spread of computer assisted surgery, more and more modern operating rooms are equipped with navigation systems, each coming with its own tracking camera. Since those cameras are part of the closed monolithic navigation system, they can’t be used for other applications than the one intended by the supplier. With the novel service oriented device connectivity standard (IEEE 11073-SDC), introduced by the OR.NET initiative (www.ornet.org), needless double procurements could be avoided and multiple systems could use the same camera that – similar to OR lights – could be installed as a standard equipment in each OR. This would decrease the cost-to-benefit ratio also of new applications that would currently as such not justify to acquire a proprietary tracking camera.While the integration of a tracking camera to an open medical device IT network can open up for new applications, it should on the other hand not impair the usability and the safety of the navigation system. Therefore, a low latency must be guaranteed between tracking camera and navigational display.This paper evaluates the integration of an atracsys fusionTrack 500 tracking camera into the OR.NETwork. The response time from a change in the real world to the reception of the corresponding data package is measured to determine the feasibility of an integra- tion without impairing current navigational tasks.The results show that, as long as the underlying network infrastructure is not at its capacity limit, latencies below 60 ms are achieved. Therefore, the integration of a tracking camera for navigational tasks is feasible.

scholarly journals Computer-assisted surgery navigation of pedicle screw insertion by standardized trainees

2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Mingyong Liu ◽  
Liang Zhang ◽  
Jianhua Zhao ◽  
Peng Liu
Keyword(s):  
Ct Scan ◽  
Pedicle Screw ◽  
Navigation System ◽  
Computer Assisted Surgery ◽  
Control Group ◽  
Computer Assisted ◽  
Low Grade ◽  
Screw Insertion ◽  
Pedicle Screw Insertion ◽  
Thoracic Pedicle Screw

<p><strong>Objective:</strong> To assess the precision and efficiency computer-assisted surgery navigation of pedicle screw insertion by standardized trainees. <strong>Methods</strong> From September 2013 to June 2016, 360 thoracic pedicle screws were inserted into 100 patients by standardized trainees (n = 30). Screws on the left side were inserted by hands (control group), while the other side were inserted under the guidance of computer-assistant navigation system (guided group). The insertion time and volume of blood lost by each screw were retrospectively analyzed. The precision ratio was assessed by computerized tomography (CT) scan after operation. <strong>Results</strong> The time consumed in screw insertion was significantly shorter in the guided group than that in the control group. The blood lost volume was lesser in the guided group. Post-operation CT scan revealed higher precision in the guided group than that in the control group.<strong> Conclusion</strong> Computer-assistant navigation system facilitates the learning of standardized trainees, and reduces the time-consuming and bleeding in thoracic pedicle screw insertion. Orthodontics training is the most important low-grade physician training in the orthopedic department1,2. Due to the complexity of spinal anatomy, professional required and high risk of spinal surgery, thoracic pedicle screw implantation has become a very demanding technique. Furthermore, the spine surgery learning is not conducive to the trainees. Since 2013, our department started to use the computer-assisted three-dimensional navigation technology to guide the implantation of screws3. We found that the computer-assisted navigation technology has greater advantage when compared with the traditional hand-implanted technology.</p>

A Simple Goniometer for Use Intraoperatively in Total Knee Arthroplasty

2013 ◽  
Vol 7 (1) ◽  
Author(s):  
W. McGann ◽  
J. Peter ◽  
J. M. Currey ◽  
J. M. Buckley ◽  
K. D. Liddle
Keyword(s):  
Total Knee Arthroplasty ◽  
Measurement Error ◽  
Knee Arthroplasty ◽  
Navigation System ◽  
Measurement Errors ◽  
Computer Assisted Surgery ◽  
Angle Measurement ◽  
Lower Limbs ◽  
Computer Assisted ◽  
Total Knee

Intraoperative range of motion (ROM) assessment can be challenging during total knee arthroplasty (TKA) surgery. As computer assisted surgery is costly and not readily available to many surgeons, we have developed a simple, cost-effective intraoperative device to precisely measure knee flexion and extension. A simple knee goniometer system was constructed consisting of a digital level mounted to a base that rigidly attaches two standard needles. The needles are pushed through the overlying soft tissue of the distal femur. The device is then applied to the proximal tibia, where an angle measurement of the knee is registered. A validation study for this device was conducted on two pairs of intact cadaveric lower limbs at 0 deg, 10 deg, 15 deg, 20 deg, 25 deg, and 30 deg. Two orthopedic surgeons experienced with the system performed three measurements at each angle. Systematic error, defined as the goniometer reading at 0 deg flexion anatomically as determined by the navigation system, ranged from −9.1 deg to 3.0 deg, consistent for each operator on every case. Measurement error, defined as the variability in repeated, fixed angle measurements made with the goniometer, was 1.5 ± 1.0 deg across all surgeons, cases, and prescribed flexion angles. For both surgeons and all imposed flexion angles, measurement errors were below the 4 deg clinical threshold. The simple knee goniometer system generated accurate, repeatable measures of changes in flexion angle intraoperatively with measurement error comparable to errors obtained using the commercial navigation system (1 deg–2 deg). However, the knee goniometer is less complex, less time intensive, and less costly than currently available computer assistive devices. Taken together, our results are very promising for the continued development of this device.

scholarly journals Accuracy analysis of computer-assisted surgery for femoral trochanteric fracture using a fluoroscopic navigation system: Stryker ADAPT®system

Injury ◽  
2018 ◽  
Vol 49 (6) ◽  
pp. 1149-1154 ◽  
Author(s):  
Hirokazu Takai ◽  
Masatoshi Murayama ◽  
Sakumo Kii ◽  
Daisuke Mito ◽  
Chihiro Hayai ◽  
...  
Keyword(s):  
Navigation System ◽  
Trochanteric Fracture ◽  
Computer Assisted Surgery ◽  
Computer Assisted ◽  
Accuracy Analysis ◽  
Fluoroscopic Navigation

scholarly journals Augmented-Reality within Computer Assisted Orthopaedic Surgery Workflows: A Proof of Concept Study

10.29007/dswz ◽  
2019 ◽  
Author(s):  
Hisham Iqbal ◽  
Fabio Tatti ◽  
Ferdinando Rodriguez Y Baena
Keyword(s):  
Augmented Reality ◽  
Qualitative Evaluation ◽  
Computer Assisted Surgery ◽  
Medical Robotics ◽  
Patient Specific ◽  
Computer Assisted ◽  
Specific Data ◽  
Cluttered Environment ◽  
Computer Assisted Orthopaedic Surgery ◽  
Completion Times

The integration of augmented-reality (AR) in medical robotics has been shown to reduce cognitive burden and improve information management in the typically cluttered environment of computer-assisted surgery. A key benefit of such systems is the ability to generate a composite view of medical-informatics and the real environment, streamlining the pathway for delivering patient-specific data. Consequently, AR was integrated within an orthopaedic setting by designing a system that captured and replicated the user- interface of a commercially available surgical robot onto a commercial head mounted see through display. Thus, a clinician could simultaneously view the operating-site and real- time informatics when carrying out an assisted patellofemoral-arthroplasty (PFA). The system was tested with 10 surgeons to examine its usability and impact on procedure- completion times when conducting simulated PFA on sawbone models. A statistically insignificant mean increase in procedure completion-time (+23.7s, p=0.240) was found, and the results of a post-operative qualitative-evaluation indicated a strongly positive consensus on the system, with a large majority of subjects agreeing the system provided value to the procedure without incurring noticeable physical discomfort. Overall, this study provides an encouraging insight into the high levels of engagement AR has with a clinical audience as well as its ability to enhance future generations of medical robotics.

Navigation as a quality management tool in cochlear implant surgery

2004 ◽  
Vol 118 (10) ◽  
pp. 764-770 ◽  
Author(s):  
Jörg Schipper ◽  
Antje Aschendorff ◽  
Iakovos Arapakis ◽  
Thomas Klenzner ◽  
Christian Barna Teszler ◽  
...  
Keyword(s):  
Quality Management ◽  
Cochlear Implant ◽  
Navigation System ◽  
Cochlear Implantation ◽  
Computer Assisted Surgery ◽  
Management Tool ◽  
Computer Assisted ◽  
Implant Surgery ◽  
Lateral Skull Base ◽  
Cochlear Implant Surgery

This cadaver study assessed the value of navigation in cochlear implant surgery. Cochlear implantation was simulated on a cadaver using a Stryker-Leibinger navigation system and a Nucleus 24 Contour implant. A conventional surgical strategy consisting of mastoidectomy, posterior tympanotomy, and cochleostomy was performed. The navigated surgical procedure was evaluated for accuracy, reliability, reproducibility, and practicability. The technology of computer-assisted surgery is applicable in cochlear implantation and beneficial in as much as the navigation-controlled implantation constitutes a non-invasive instrument of quality management. Nevertheless, in order to keep the point accuracy below one millimeter, a referencing methodusing concealed bordering anatomical structures may be further needed to perform the cochleostomy reliably under the guidance of a navigation system. More reproducible reference systems are needed if navigated lateral skull base surgery is to be fully relied upon.

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