scholarly journals Application of Augmented Reality in Percutaneous Procedures—Rhizotomy of the Gasserian Ganglion

2021 ◽  
Author(s):  
Alexander Rau ◽  
Roland Roelz ◽  
Horst Urbach ◽  
Volker Arnd Coenen ◽  
Theo Demerath ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Euclidean Distance ◽  
Three Dimensional ◽  
Target Point ◽  
Gasserian Ganglion ◽  
Foramen Ovale ◽  
Lateral Deviation ◽  
Percutaneous Procedures ◽  
Percutaneous Rhizotomy ◽  
Improved Accuracy

Abstract BACKGROUND Percutaneous rhizotomy of the Gasserian ganglion for trigeminal neuralgia is an effective therapeutic procedure. Yet, landmark-guided cannulation of the foramen ovale is manually challenging and difficult to learn. OBJECTIVE To overcome these limitations, we assessed the feasibility and accuracy of an augmented reality (AR)-guided puncture of the foramen ovale. METHODS A head phantom with soft tissue structures of the facial area was built. A three-dimensional (3D)-dataset of the phantom was generated using a stereotactic planning workstation. An optimal trajectory to the foramen ovale was created and then transferred to an AR headset. A total of 2 neurosurgeons and 2 neuroradiologists independently performed 8 AR-guided and 8 landmark-guided cannulations of the foramen ovale, respectively. For each AR-guided cannulation, the hologram was manually aligned with the phantom. Accuracy of the cannulation was evaluated using the Euclidean distance to the target point as well as the lateral deviation of the achieved trajectory from the planned trajectory at target point level. RESULTS With the help of AR guidance, a successful cannulation of the foramen ovale was achieved in 90.6% compared to the purely landmark-based method with 18.8%. Euclidean distance and lateral deviation were significantly lower with AR guidance than landmark guidance (P < .01). CONCLUSION AR greatly improved accuracy of simulated percutaneous rhizotomy of the Gasserian ganglion.

The Use of Intraoperative Navigation for Percutaneous Procedures at the Skull Base Including a Difficult-to-Access Foramen Ovale

2011 ◽  
Vol 70 (suppl_2) ◽  
pp. ons177-ons180 ◽  
Author(s):  
Bradley N. Bohnstedt ◽  
R. Shane Tubbs ◽  
Aaron A. Cohen-Gadol
Keyword(s):  
Skull Base ◽  
Image Guidance ◽  
Foramen Ovale ◽  
Awake Patient ◽  
Ct Scanner ◽  
Successful Completion ◽  
Image Guided ◽  
Percutaneous Procedures ◽  
Percutaneous Rhizotomy ◽  
Head Clamp

ABSTRACT BACKGROUND: We describe the use of an intraoperative CT scan obtained using the Medtronic O-arm (Littleton, Massachusetts) for image-guided cannulation of the foramen ovale not previously accessible with the use of fluoroscopy alone. Unlike previously described procedures, this technique does not require placement of an invasive head clamp and may be used with an awake patient. OBJECTIVE: To describe the use of intraoperative neuronavigation for accessing skull base foramina and, specifically, cannulating of the foramen ovale during percutaneous rhizotomy procedures using an intraoperative image guidance CT scanner (Medtronic O-arm, Littleton, Massachusetts). METHODS: A noninvasive Landmark Fess Strap attached to a spine reference frame was applied to the heads of 4 patients who harbored a difficult-to-access foramen ovale. An intraoperative HD3D skull base scan using a Medtronic O-arm was obtained, and Synergy Spine software was used to create 3D reconstructions of the skull base. Using image guidance, we navigated the needle to percutaneously access the foramen ovale by the use of a single tract for successful completion of balloon compression of the trigeminal nerve. RESULTS: All 4 patients (3 females and 1 male; ages 65-75) underwent the procedure with no complications. CONCLUSION: Based on our experience, neuronavigation with the use of intraoperative O-arm CT imaging is useful during these cases.

scholarly journals Implementasi Metode Euclidean Distance untuk Rekomendasi Ukuran Pakaian pada Aplikasi Ruang Ganti Virtual

2018 ◽  
Vol 5 (2) ◽  
pp. 129
Author(s):  
Rezky Rizaldi ◽  
Arik Kurniawati ◽  
Cucun Very Angkoso
Keyword(s):  
Augmented Reality ◽  
Euclidean Distance ◽  
Recommendation System ◽  
Three Dimensional ◽  
Positive Influence ◽  
The Body ◽  
Online Store ◽  
3 Dimensional ◽  
Potential Buyer ◽  
The Right

<p class="Abstrak">Perkembangan jual beli garmen secara <em>online</em>, dihadapkan pada kenyataan adanya 70% pengembalian produk oleh pembeli, akibat ketidaksesuaian antara harapan dan kenyataan model serta ukuran garmen. Kehadiran <em>virtual fitting room</em> secara <em>online</em>, diharapkan mampu mengurangi adanya pengembalian produk, memberikan pengaruh positif terhadap keistimewaan suatu produk, keinginan untuk membeli dan kepastian membeli secara <em>online</em>. <em>Virtual Fitting Room</em> ini bisa diimplementasikan pada toko <em>online</em> ataupun toko baju seperti biasa. Tahapan penelitian meliputi : penerapan teknologi <em>kinect</em> untuk mendapatkan data <em>skeleton</em> dari calon pembeli yang digunakan sebagai dasar untuk memberikan rekomendasi ukuran pakaian, selanjutnya perhitungan <em>euclidean distance</em> digunakan untuk menghitung ukuran punggung calon pembeli dan terakhir penerapan teknologi <em>augmented reality</em> untuk menampilkan pakaian <em>virtual</em> 3 dimensi yang melekat tepat di badan calon pembeli. Sistem rekomendasi ini mampu menampilkan calon pembeli dengan menggunakan baju virtual 3 dimensi yang sesuai dengan ukuran rekomendasi dari sistem (S,M,L, atau XL). Sistem ini juga memberikan fitur bagi calon pembeli untuk mencoba model pakaian lainnya. Sistem dapat memperlihatkan baju virtual 3 dimensi yang tetap melekat pada badan calon pembeli, ketika melakukan rotasi ke kanan 90<sup>0</sup>, ke kiri 90<sup>0</sup>, balik kanan 180<sup>0</sup> dan balik kiri 180<sup>0</sup>. Hasil uji coba sistem rekomendasi ukuran pakaian ini akan berjalan secara optimal jika pengaturan ketinggian <em>kinect</em> sebesar 55 cm dari tanah. Untuk ketinggian <em>kinect</em> 55cm, 65cm dan 75 cm dari tanah, sistem ini mampu menyajikan kesesuaian rekomendasi ukuran dibandingkan dengan ukuran asli dari calon pembeli sebesar 70%.</p><p class="Abstrak"> </p><p><strong>Kata kunci</strong>: <em>k</em><em>inect, augmented reality, euclidean distance</em><em>, virtual fitting room</em><strong></strong></p><p class="Judul2"> </p><p class="Judul2"><em>Abstract</em></p><p class="Judul2"><em>The development of online garment sale, faced with the fact that there is 70% return of product by the buyer, due to a mismatch between expectation and reality of model and garment size. The presence of virtual fitting room in the online store is expected to reduce the return of products, give a positive influence on the privilege of a product, the desire to buy and certainty to buy online. Virtual Fitting Room can be implemented in the online store or clothing store as usual. The research stages include the application of Kinect technology to obtain skeleton data from prospective buyers used as a basis for providing system recommendations, then euclidean distance calculation is used to calculate the size back potential buyers, and lastly application of augmented reality technology to display the right three-dimensional virtual clothing in potential buyer body. This recommendation system can present potential buyers by using 3-dimensional virtual shirts attached to their bodies by the recommended size of the system (S, M, L, or XL). This system also provides features for potential buyers to try other clothing models. The system can show a 3-dimensional virtual shirt that remains attached to the body of potential buyers, while rotating right 90<sup>0</sup>, left 90<sup>0</sup>, right turn 180<sup>0</sup> and left turn 180<sup>0</sup>. The test results of this clothing size recommendation system will run optimally if the Kinect height setting of 55 cm from the ground. For the Kinect height of 55cm, 65cm and 75cm from the ground, the system can present the recommended size with the original size of the potential buyer of 70%.</em></p><p class="Judul2"> </p><p><strong>Keywords</strong>: <em>kinect, augmented reality, euclidean distance, virtual fitting room</em></p>

Improved visualization of the foramen ovale for percutaneous approaches to the gasserian ganglion

1994 ◽  
Vol 80 (1) ◽  
pp. 156-159 ◽  
Author(s):  
Arthur M. Gerber
Keyword(s):  
Trigeminal Neuralgia ◽  
Radiation Exposure ◽  
Gasserian Ganglion ◽  
Foramen Ovale ◽  
Content Type ◽  
Percutaneous Procedures ◽  
Radiopaque Markers ◽  
Radiological Studies ◽  
Fine Print

✓ Percutaneous procedures for treating trigeminal neuralgia involve the penetration of foramen ovale using cutaneous landmarks and radiological guidance. The placement of radiopaque markers over the commonly used “zygomatic points” in front of the ears provides landmarks on intraoperative radiological studies that facilitate localization of the foramen ovale. Speed and safety of percutaneous trigeminal procedures should be enhanced. There is no increase in radiation exposure over that in other commonly used approaches.

Stroke Prophylaxis by Percutaneous Closure of Patent Foramen Ovale and Left Atrial Appendage

2011 ◽  
Vol 6 (1) ◽  
pp. 67
Author(s):  
Antonio L Bartorelli ◽  
Claudio Tondo ◽  
◽  
Keyword(s):  
Left Atrial ◽  
Patent Foramen Ovale ◽  
Stroke Risk ◽  
Left Atrial Appendage ◽  
Cryptogenic Stroke ◽  
Atrial Appendage ◽  
Foramen Ovale ◽  
Percutaneous Procedures ◽  
Cerebrovascular Events

Innovative percutaneous procedures for stroke prevention have emerged in the last two decades. Transcatheter closure of the patent foramen ovale (PFO) is performed in patients who suffered a cryptogenic stroke or a transient ischaemic attach (TIA) in order to prevent recurrence of thromboembolic events. Percutaneous occlusion of the left atrial appendage (LAA) has been introduced to reduce stroke risk in patients with atrial fibrillation (AF). The role of PFO and LAA in the occurrence of cerebrovascular events and the interventional device-based therapies to occlude the PFO and LAA are discussed.

scholarly journals A Novel Suture Training System for Open Surgery Replicating Procedures Performed by Experts Using Augmented Reality

2021 ◽  
Vol 45 (5) ◽  
Author(s):  
Yuri Nagayo ◽  
Toki Saito ◽  
Hiroshi Oyama
Keyword(s):  
Augmented Reality ◽  
Motion Capture ◽  
Open Surgery ◽  
Three Dimensional ◽  
Training System ◽  
Surgical Skills ◽  
Surgical Instruments ◽  
Interrupted Suture ◽  
Education Environment ◽  
Surgical Field

AbstractThe surgical education environment has been changing significantly due to restricted work hours, limited resources, and increasing public concern for safety and quality, leading to the evolution of simulation-based training in surgery. Of the various simulators, low-fidelity simulators are widely used to practice surgical skills such as sutures because they are portable, inexpensive, and easy to use without requiring complicated settings. However, since low-fidelity simulators do not offer any teaching information, trainees do self-practice with them, referring to textbooks or videos, which are insufficient to learn open surgical procedures. This study aimed to develop a new suture training system for open surgery that provides trainees with the three-dimensional information of exemplary procedures performed by experts and allows them to observe and imitate the procedures during self-practice. The proposed system consists of a motion capture system of surgical instruments and a three-dimensional replication system of captured procedures on the surgical field. Motion capture of surgical instruments was achieved inexpensively by using cylindrical augmented reality (AR) markers, and replication of captured procedures was realized by visualizing them three-dimensionally at the same position and orientation as captured, using an AR device. For subcuticular interrupted suture, it was confirmed that the proposed system enabled users to observe experts’ procedures from any angle and imitate them by manipulating the actual surgical instruments during self-practice. We expect that this training system will contribute to developing a novel surgical training method that enables trainees to learn surgical skills by themselves in the absence of experts.

Three-dimensional augmented reality transperitoneal robot assisted partial nephrectomy (3d ar-rapn): A new tool to identify the hidden tumours

2019 ◽  
Vol 18 (6) ◽  
pp. e2690 ◽  
Author(s):  
F. Porpiglia ◽  
E. Checcucci ◽  
D. Amparore ◽  
F. Piramide ◽  
P. Verri ◽  
...  
Keyword(s):  
Augmented Reality ◽  
Partial Nephrectomy ◽  
Three Dimensional ◽  
Robot Assisted

Controlled thermocoagulation of trigeminal ganglion and rootlets for differential destruction of pain fibers

1974 ◽  
Vol 40 (2) ◽  
pp. 143-156 ◽  
Author(s):  
William H. Sweet ◽  
James G. Wepsic
Keyword(s):  
Trigeminal Neuralgia ◽  
Facial Pain ◽  
Electrical Heating ◽  
Gasserian Ganglion ◽  
Foramen Ovale ◽  
Content Type ◽  
Corneal Scarring ◽  
Radiofrequency Heating ◽  
Neurological Morbidity ◽  
Fine Print

✓ The authors report their experience in the treatment of trigeminal neuralgia with controlled increments of radiofrequency heating from an electrode placed in the Gasserian ganglion or its posterior rootlets. Touch is preserved in some or all of a trigeminal zone rendered analgesic. The electrode tip is introduced through the foramen ovale and placed among the desired rootlets with the help of a combination of radiographs and the conscious patient's response to electrical stimulation with a square wave signal and gentle electrical heating. The degree of heat is measured by a thermister at the electrode tip. The patient's cooperation is maintained by the use of the neurolept anesthetic Innovar and the production of brief unconsciousness for the painful parts of the operation by methohexital (Brevital). Of 274 patients with facial pain so treated, 214 had trigeminal neuralgia; 91% of the latter group experienced relief of pain and 125 followed for 2½ to 6 years had a recurrence rate of 22%. In a total of 353 procedures, there has been no mortality and no neurological morbidity outside the trigeminal nerve. Only six of the patients with trigeminal neuralgia have complained significantly of postoperative paresthesias. The most serious undesired result has been the production of an anesthetic cornea in 28 patients, one of whom lost the sight of one eye due to corneal scarring. Correlating findings in our patients with those in studies by other authors, we conclude that the preservation of some touch is due to resistance to heating by the heavily myelinated A-beta fibers.

Path Planning for Spheres in Three Dimensional Environments With Low Interference Index

1994 ◽  
Author(s):  
Duane W. Storti ◽  
Debasish Dutta
Keyword(s):  
Path Planning ◽  
Free Path ◽  
Configuration Space ◽  
Local Knowledge ◽  
Three Dimensional ◽  
Target Point ◽  
Planning Problem ◽  
Spherical Object ◽  
Starting Point ◽  
Path Planning Problem

Abstract We consider the path planning problem for a spherical object moving through a three-dimensional environment composed of spherical obstacles. Given a starting point and a terminal or target point, we wish to determine a collision free path from start to target for the moving sphere. We define an interference index to count the number of configuration space obstacles whose surfaces interfere simultaneously. In this paper, we present algorithms for navigating the sphere when the interference index is ≤ 2. While a global calculation is necessary to characterize the environment as a whole, only local knowledge is needed for path construction.

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