scholarly journals Surgical Navigation Systems Based On AR/VR Technologies

2021 ◽  
Author(s):  
Vladimir Ivanov ◽  
Anton Krivtsov ◽  
Sergey Strelkov ◽  
Dmitry Gulyaev ◽  
Denis Godanyuk ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Soft Tissues ◽  
Surgical Navigation ◽  
Navigation Systems ◽  
Actual Patient ◽  
Peter The Great ◽  
Ct Data ◽  
Visualization Systems ◽  
Surgical Navigation Systems ◽  
Surgical Operations

Abstract This study considers modern surgical navigation systems based on augmented reality technologies. Augmented reality glasses are used to construct holograms of the patient's organs from MRI and CT data, subsequently transmitted to the glasses. Thus, in addition to seeing the actual patient, the surgeon gains visualization inside the patient's body (bones, soft tissues, blood vessels, etc.). The solutions developed at Peter the Great St. Petersburg Polytechnic University allow reducing the invasiveness of the procedure and preserving healthy tissues. This also improves the navigation process, making it easier to estimate the location and size of the tumor to be removed.We describe the application of developed systems to different types of surgical operations (removal of a malignant brain tumor, removal of a cyst of the cervical spine). We consider the specifics of novel navigation systems designed for anesthesia, for endoscopic operations. Furthermore, we discuss the construction of novel visualization systems for ultrasound machines. Our findings indicate that the technologies proposed show potential for telemedicine.

Augmented Reality for Retrosigmoid Craniotomy Planning

2021 ◽  
Author(s):  
Caio A. Neves ◽  
Christoph Leuze ◽  
Alejandro M. Gomez ◽  
Nassir Navab ◽  
Nikolas Blevins ◽  
...  
Keyword(s):  
Medical Imaging ◽  
Augmented Reality ◽  
Surgical Navigation ◽  
Internal Auditory Canal ◽  
Navigation Systems ◽  
Imaging Data ◽  
Dural Sinuses ◽  
Bone Removal ◽  
Surgical Navigation Systems ◽  
Medical Imaging Data

AbstractWhile medical imaging data have traditionally been viewed on two-dimensional (2D) displays, augmented reality (AR) allows physicians to project the medical imaging data on patient's bodies to locate important anatomy. We present a surgical AR application to plan the retrosigmoid craniotomy, a standard approach to access the posterior fossa and the internal auditory canal. As a simple and accurate alternative to surface landmarks and conventional surgical navigation systems, our AR application augments the surgeon's vision to guide the optimal location of cortical bone removal. In this work, two surgeons performed a retrosigmoid approach 14 times on eight cadaver heads. In each case, the surgeon manually aligned a computed tomography (CT)-derived virtual rendering of the sigmoid sinus on the real cadaveric heads using a see-through AR display, allowing the surgeon to plan and perform the craniotomy accordingly. Postprocedure CT scans were acquired to assess the accuracy of the retrosigmoid craniotomies with respect to their intended location relative to the dural sinuses. The two surgeons had a mean margin of davg = 0.6 ± 4.7 mm and davg = 3.7 ± 2.3 mm between the osteotomy border and the dural sinuses over all their cases, respectively, and only positive margins for 12 of the 14 cases. The intended surgical approach to the internal auditory canal was successfully achieved in all cases using the proposed method, and the relatively small and consistent margins suggest that our system has the potential to be a valuable tool to facilitate planning a variety of similar skull-base procedures.

scholarly journals Towards Optical Imaging for Spine Tracking without Markers in Navigated Spine Surgery

Sensors ◽  
2020 ◽  
Vol 20 (13) ◽  
pp. 3641 ◽  
Author(s):  
Francesca Manni ◽  
Adrian Elmi-Terander ◽  
Gustav Burström ◽  
Oscar Persson ◽  
Erik Edström ◽  
...  
Keyword(s):  
Feature Detection ◽  
Reference Frames ◽  
Surgical Navigation ◽  
Optical Tracking ◽  
Navigation Systems ◽  
Detection Algorithms ◽  
Actual Patient ◽  
Optical Images ◽  
Navigated Spine Surgery ◽  
Surgical Navigation Systems

Surgical navigation systems are increasingly used for complex spine procedures to avoid neurovascular injuries and minimize the risk for reoperations. Accurate patient tracking is one of the prerequisites for optimal motion compensation and navigation. Most current optical tracking systems use dynamic reference frames (DRFs) attached to the spine, for patient movement tracking. However, the spine itself is subject to intrinsic movements which can impact the accuracy of the navigation system. In this study, we aimed to detect the actual patient spine features in different image views captured by optical cameras, in an augmented reality surgical navigation (ARSN) system. Using optical images from open spinal surgery cases, acquired by two gray-scale cameras, spinal landmarks were identified and matched in different camera views. A computer vision framework was created for preprocessing of the spine images, detecting and matching local invariant image regions. We compared four feature detection algorithms, Speeded Up Robust Feature (SURF), Maximal Stable Extremal Region (MSER), Features from Accelerated Segment Test (FAST), and Oriented FAST and Rotated BRIEF (ORB) to elucidate the best approach. The framework was validated in 23 patients and the 3D triangulation error of the matched features was < 0.5 mm. Thus, the findings indicate that spine feature detection can be used for accurate tracking in navigated surgery.

Cone-Beam Computed Tomography Allows Accurate Registration to Surgical Navigation Systems: A Multidevice Phantom Study

2019 ◽  
Vol 33 (6) ◽  
pp. 691-699 ◽  
Author(s):  
Benjamin J. Talks ◽  
Karan Jolly ◽  
Hanna Burton ◽  
Hitesh Koria ◽  
Shahzada K. Ahmed
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Surgical Navigation ◽  
Imaging Modality ◽  
Field Of View ◽  
Cone Beam ◽  
Navigation Systems ◽  
Registration Error ◽  
Surgical Navigation Systems ◽  
Phantom Head

Background Cone-beam computed tomography (CBCT) is a fast imaging technique with a substantially lower radiation dosage than conventional multidetector computed tomography (MDCT) for sinus imaging. Surgical navigation systems are increasingly being used in endoscopic sinus and skull base surgery, reducing perioperative morbidity. Objective To investigate CBCT as a low-radiation imaging modality for use in surgical navigation. Methods The required field of view was measured from the tip of the nose to the posterior clinoid process anteroposteriorly and the nasolabial angle to the roof of the frontal sinus superoinferiorly on 50 consecutive MDCT scans (male = 25; age = 17–85 years). A phantom head was manufactured by 3-dimensional printing and imaged using 3 CBCT scanners (Carestream, J Morita, and NewTom), a conventional MDCT scanner (Siemens), and highly accurate laser scanner (FARO). The phantom head was registered to 3 surgical navigation systems (Brainlab, Stryker, and Medtronic) using scans from each system. Results The required field of view (mean ± standard deviation) was measured as 107 ± 7.6 mm anteroposteriorly and 90.3 ± 9.6 mm superoinferiorly. Image error deviations from the laser scan (median ± interquartile range) were comparable for MDCT (0.19 ± 0.09 mm) and CBCT (CBCT 1: 0.15 ± 0.11 mm; CBCT 2: 0.33 ± 0.18 mm; and CBCT 3: 0.13 ± 0.13 mm) scanners. Fiducial registration error and target registration error were also comparable for MDCT- and CBCT-based navigation. Conclusion CBCT is a low-radiation preoperative imaging modality suitable for use in surgical navigation.

scholarly journals 18F-Fluciclovine PET to distinguish treatment-related effects from disease progression in recurrent glioblastoma: PET fusion with MRI guides neurosurgical sampling

2019 ◽  
Vol 7 (2) ◽  
pp. 152-157 ◽  
Author(s):  
Fraser Henderson ◽  
Steven Brem ◽  
Donald M O’Rourke ◽  
MacLean Nasrallah ◽  
Vivek P Buch ◽  
...  
Keyword(s):  
Surgical Navigation ◽  
Unmet Need ◽  
Recurrent Glioblastoma ◽  
Navigation Systems ◽  
Imaging Findings ◽  
Radiotracer Uptake ◽  
Mri Guided ◽  
Surgical Navigation Systems ◽  
Stereotactic Biopsies ◽  
Surgical Sampling

Abstract Differentiation of true tumor progression from treatment-related effects remains a major unmet need in caring for patients with glioblastoma. Here, we report how the intraoperative combination of MRI with18F-fluciclovine PET guided surgical sampling in 2 patients with recurrent glioblastoma.18F-Fluciclovine PET is FDA approved for use in prostate cancer and carries an orphan drug designation in glioma. To investigate its utility in recurrent glioblastoma, we fused PET and MRI images using 2 different surgical navigation systems and performed targeted stereotactic biopsies from the areas of high (“hot”) and low (“cold”) radiotracer uptake. Concordant histopathologic and imaging findings suggest that a combined18F-fluciclovine PET-MRI–guided approach can guide neurosurgical resection of viable recurrent glioblastoma in the background of treatment-related effects, which can otherwise look similar on MRI.

HEALTHCARE 2019

2020 ◽  
pp. 52-60
Author(s):  
V. I. Matveev
Keyword(s):  
Medical Equipment ◽  
Surgical Navigation ◽  
Health Care Organization ◽  
Care Organization ◽  
Navigation Systems ◽  
Resonance Imaging ◽  
X Ray ◽  
Modern System ◽  
Magnetic Therapy ◽  
Surgical Navigation Systems

The article provides a brief description of the exhibition "Healthcare 2019", which was attended by 630 companies from 30 countries and 71 cities in Russia. It was possible to get acquainted with the modern system of health care organization, the necessary simple and complex medical equipment, numerous accessories and consumables. The exhibition presented: medical x-ray equipment of wide application (computer tomographs, mammographs, mobile devices), magnetic resonance imaging, ultrasound medical equipment, microscopes, endoscopic equipment, surgical navigation systems, as well as magnetic therapy, thermography and radiothermometry. The companies showed the best examples of modern medical equipment.

Clinical Application of Different Surgical Navigation Systems in Complex Craniomaxillofacial Surgery

2016 ◽  
Vol 76 (4) ◽  
pp. 411-419 ◽  
Author(s):  
Tom J. Liu ◽  
An-Ta Ko ◽  
Yueh-Bih Tang ◽  
Hong-Shiee Lai ◽  
Hsiung-Fei Chien ◽  
...  
Keyword(s):  
Clinical Application ◽  
Surgical Navigation ◽  
Navigation Systems ◽  
Craniomaxillofacial Surgery ◽  
Surgical Navigation Systems
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